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Scosche SLC4 Line Output Converter

Convert speaker connections to line-level preamp connections in mobile audio applications

Item # 142SLC4

So you're trying to connect an amplifier without speaker-level inputs to a car stereo that doesn't have preamp...

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So you're trying to connect an amplifier without speaker-level inputs to a car stereo that doesn't have preamp...

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Item # 142SLC4

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About the Scosche SLC4 Line Output Converter

Scosche SLC4 Line Output Converter

So you're trying to connect an amplifier without speaker-level inputs to a car stereo that doesn't have preamp outputs? It can be done, but you'll need a line output converter to make it happen. The SLC4 from Scosche can handle up to four speaker-level inputs and four RCA outputs — enough for a 4-channel amp or a multi-amp setup.

Scosche SLC4 Line Output Converter

So you're trying to connect an amplifier without speaker-level inputs to a car stereo that doesn't have preamp outputs? It can be done, but you'll need a line output converter to make it happen. The SLC4 from Scosche can handle up to four speaker-level inputs and four RCA outputs — enough for a 4-channel amp or a multi-amp setup.

Connect the speaker leads from your car stereo to the SLC4. It reduces the incoming speaker-level signals so that outgoing signals are compatible with the preamp inputs on your amplifier. You will then need to use two RCA patch cords (not included) to make the connections to your amp.

The SLC4 features adjustable gain settings on each channel, and it's compatible with any car stereo. Dimensions: 4-7/8"W x 1-3/16"H x 2-3/4"D. Warranty: 90 days.

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What's in the box:

  • Line output adapter with attached plastic screwdriver
  • Instructions

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Scosche SLC4 Line Output Converter reviews

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Scosche SLC4 Line Output Converter

Crutchfield customer from North Port, FL on 6/9/2019

1994 Mercedes-Benz SL-Class

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Worked great with my 1995 MB factory Bose system.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Ball Ground, GA on 6/4/2019

2008 Kia Sorento

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Ordered Kenwood Dpx793BH, Scosche SLC4 Line Output Converter, Metra 95-7328 Dash Kit, Metra 70-7302 Receiver Wiring Harness, iDatalink Maestro ADS-MSW Steering Wheel Control Adapter and Crutchfield ReadyHarnessT Service ..... with one call to confirm a two wire connection for iDatalink Maestro ADS-MSW . All excellent !!!

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Scosche SLC4 Line Output Converter

Crutchfield customer from Bakersfield, CA on 6/3/2019

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Works great to enable the system to work together

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I'm happy!

Crutchfield customer from Fort Wayne, IN on 5/27/2019

2006 Hyundai Sonata

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Gives great sound, lots of features, lots of tuning capabilities. Great job hooking up to the wiring harness, Crutchfield.

Pros: lots of tuning options

Cons: the size made it a little difficult to stuff into the rear of my radio dash opening.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Marietta, GA on 5/26/2019

2002 Toyota Avalon

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Works perfectly

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Scosche SLC4 Line Output Converter

Crutchfield customer from Huntsville, AL on 5/15/2019

1999 Toyota Avalon

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Made installation a breeze no cutting and splicing of speaker wires.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Jackson, NJ on 5/15/2019

2002 Pontiac Grand Prix

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Easy install it was a little difficult to tuck away behind the head unit but overall good stuff

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It does what it needs to do

Luis from Miramar, FL on 5/6/2019

2009 Pontiac Solstice

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It does what it needs to do, I got this LOC years ago, 2009 to be exact, but didn't get to used until now. I paired it with a Sound Ordnance m350 I got from Crutchfield. I didn't make any adjustments to it, I adjusted the amplifier instead. Based on my experience with this LOC I can say that; at least for subs, it works very well. I knocked one start down for the lack of installation holes, I ended up fabricating a support out of aluminum and 3M dual sided tape, see picture.

Pros: Plug and play

Cons: No holes to use screws for installation.

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Good product- bad instruction manual

Crutchfield customer from White Hse Sta, NJ on 4/29/2019

2004 Infiniti I35

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This Line output converter does what I needed it to... I must admit installation was not as simply outlined as it could have been. The small screws that hold the speaker wires are very hard to get to- I ended up modifying a small screwdriver with a grinder to have something small enough to fit in yet sturdy enough to put some hold on the wire. The instructions are confusing. If it wasn't for tech support at Crutchfield's I would not have installed the unit properly.

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Good

Paul from Sandy on 4/13/2019

2007 Hyundai Sonata

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I bought this in 2016 for my first stereo in my 2007 Hyundai Sonata and it seemed to work fine all those years and still does now. Fast forward 3.5 years later and my stereo's display no longer works(don't buy a cheap Sony receiver) so I replaced it with a Kenwood KMM-B322U digital media receiver. I'm not sure how I was able to get the old receiver, the PAC steering wheel module interface and this device stuffed behind the dash because space was limited. The Kenwood is half the length of the Sony because of no CD player and while it is still tight everything fit just fine. I'd say it is a good product. It outlasted the original stereo and hopefully my new stereo outlasts this.

Pros: No crimping necessary Keeps factory sub sound

Cons: Really big, doesn't fit well behind the dash.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Lithonia, GA on 3/31/2019

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very good product I'm enjoy my radio

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Scosche SLC4 Line Output Converter

Crutchfield customer from Fayetteville, NC on 3/6/2019

2004 BMW 3 Series

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There's a bit of a learning curve initially, but once you get everything figured out you "learn" that this is an excellent product. It might be a tight fit behind certain dashes, but if you can get it to fit, you'll be glad you got this thing back there.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Long Is City, NY on 2/3/2019

1987 Chevrolet Corvette

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Great

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Scosche SLC4 Line Output Converter

Crutchfield customer from Sikeston, MO on 2/3/2019

2004 Hyundai XG350

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Great product and great price

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Bulky, but good

Dwaine from Athens, AL on 1/21/2019

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The product is good, does what it says, and is easy to use once you figure it out. :-) It adds a lot of bulk behind the radio. I'm having to wire about an extra foot on each side, so I can stuff it elsewhere in the dash.

Pros: Does what is needed to bypass the Bose amp in my 1999 Mazda Miata.

Cons: A little learning curve in setting up. Takes up a LOT of space behind the head unit. Should have ONE screw for left and right speaker levels instead of one each.

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Works well.

Lawrence from Frackville, PA on 1/13/2019

2000 Pontiac Grand Prix

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Great product for hooking to factory amp.

Pros: Lots of options for different configurations.

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Connell, WA on 1/11/2019

2001 Infiniti I30

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worked great

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Scosche SLC4 Line Output Converter

Armand G from Lk Havasu Cty, AZ on 1/2/2019

2013 Nissan Frontier PRO-4X

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Works great

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Scosche SLC4 Line Output Converter

Roger from East Bank, WV on 12/29/2018

1995 Toyota Avalon

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works just as directed. Factory amp bypass was my final option thankfully this helped tremendously. Thanks guys for the suggestion.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Chester, MD on 11/14/2018

2003 Hyundai Santa Fe

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Good unit!

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Scosche SLC4 Line Output Converter

Crutchfield customer from Taylorsville, NC on 11/8/2018

1997 Toyota Avalon

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Works great, does the job.

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When needed, this is a great for speaker to line level conversion

Robert from Campbellsville, KY on 10/17/2018

2006 Honda Odyssey

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I tried to avoid using this, by wiring RCA connectors onto the harness adapter (since the stock amp gets line level input). This method resulted in varying levels of ground loop induced whine, based on what other devices were turned on - blower fan, AC, lights, wipers all made the noise worse. After dealing with the noise for 2 days, I pulled the radio back out, and installed this converter. Instant fix! Relatively simple to install, and in my case, I didn't need to connect the attached ground wire. In theory, down converting speaker level to line level should have an impact on the sound, but in the case of my Honda van, I could not tell any difference in the audio quality.

Pros: - Resolved ground loop noise. (whine) - Separate level adjustments for direct wire and RCA outputs.

Cons: - May not physically fit behind your radio.

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1 of 1 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Mars, PA on 9/10/2018

2008 Chevrolet Silverado

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I was recommended to get this for my 2008 Silverado 1500 LT w/out Bose because I replaced my 4 door speakers with Rockford Fosgates, and my stock stereo power output wasn't enough for me so I decided to get an amp (got a Rockford Fosgate R250x4) and after pulling out my radio, I realized I didn't have any RCA plug in spots. A quick call to Crutchfield and I got this converter. It was able to fit behind my radio and has so far been a good purchase. The only downside was that it didn't have a remote turn on wire for the amp like some others, but I was able to run that wire to the fuse for the daytime running lights (trust me, I tried everywhere, including the wiper motor, and the motor for the wiper fluid). I have been using it as a line out converter, which can be changed with a little switch on the side. All the wires fit fine and now I definitely will not need a sub now that I'm actually running enough power to my speakers. I haven't had it long enough to determine whether or not it will last until I don't have my truck anymore, but it seemed like a quality piece. The reason for the four stars is because it didn't have a remote turn on wire. The installation guide was enough for me to be able to use, but I used the instruction manual from the amp and this, along with probably about an hour on the phone with Crutchfield tech to install everything. This was also my first time ever installing an amp, and it was relatively painless.

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1 of 1 found this helpful

Scosche SLC4 Line Output Converter

Julian from Birmingham, AL on 9/3/2018

2003 BMW 3 Series

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Simple to use and install but minimal user guide may cause new installers some hassle.

Pros:

Cons: Minimalist user guide

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1 of 1 found this helpful

Great device

Jimmy from Pflugerville, TX on 8/14/2018

2003 Land Rover Discovery

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Great device! I never new something so small could be so powerful.

Pros: Great price. Super small.

Cons: None!

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0 of 0 found this helpful

Set it and forget it.

Gregory from Orlando, FL on 7/27/2018

2005 Pontiac Vibe

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A necessary component when installing an Alpine CDE 172BT in a 2005 Vibe w/ the Monsoon sound system. Worth the extra money to have Crutchfield complete the initial hook-up with the pre-wired ReadyHarness. Huge time saver with guaranteed results. A few minutes of fine tuning during install completed the set-up and E-Z install. As always, Crutchfield's friendly and knowledgeable staff was there to answer any questions. Oh, by the way, the Alpine CDE 172BT sounds great too!

Pros: Easy to install with the pre-wired Advanced ReadyHarness. Only took a few minutes to fine tune the levels. Fits perfectly inside the dash. Sounds great! Set it and forget it.

Cons: Included instructions are weak.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Livonia, MI on 7/24/2018

2004 Mazda Miata

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Useless. Didn't work for my factory Bose amp. Ended up just bypassing my factory amp.

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1 of 2 found this helpful

Scosche SLC4 Line Output Converter

Bruce from Olympia, WA on 7/18/2018

2005 BMW 3 Series

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Did not need and the first call to tech support claimed you did not send this unit. A second call said they did send it and I would need it to interface with my factory deck amp. There was no room I could find in my 2005 BMW 330CI to put it and the Alpine deck I installed works fine without it.

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Crutchfield response on 7/25/2018
Once we saw this review, our Customer Support team reached out to Bruce to issue a refund.

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Scosche SLC4 Line Output Converter

Clinton S. from Baconton, GA on 7/10/2018

2000 Pontiac Grand Prix

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It works but to me the instructions were a bit vague and unclear.

Pros: It integrates into the bose amplifier.

Cons: The gain controls are a bit crazy and the thing is huge and hard to hide behind the radio in the dash.

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A necessary component, I guess...

Jim from Hoffman Estates, IL on 7/3/2018

2006 Hyundai Azera

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I guess it does what it is supposed to do. I've installed several car stereos before, but this is the first time I've replaced a head unit with a separate amp -- this thing was included in my installation kit and wired into the harness (with Crutchfield's "Ready Harness" service). I didn't like that I had to adjust gain individually on each of the 4 speaker lines. I'm not confident that the 4 speakers are "balanced" because you can't see what level you're setting -- it's a blind screw adjustment. I tried adjusting one speaker for optimal sound without distortion, and then guesstimated how far to "back off" the others to get a similar gain. Not a very precise operation...

Pros: converts speaker outputs to line outputs for feeding external amp

Cons: difficult to "balance" each of the 4 lines to have the same gain

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Scosche SLC4 Line Output Converter

Guy from Niles, OH on 6/18/2018

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Overall for the price not bad. A little distortion, But I think anytime you pass a music through any device that might occur. Cheap way to go if you don't want to change your whole Bose system at great expense. Crutchfield was great for selling me the right system I needed and all employees were great.

Pros: easy set up and install, good price point.

Cons: Looks and feels cheap. Speaker wire connectors seems ike they could come loose.

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Works Very Well

Juan from Abingdon, MD on 6/17/2018

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Ordered this as part of the kit for installing a JVC KW R-935BTS to replace the factory unit of a 2011 Hyundai Santa Fe Limited with the Infinity System. Had Crutchfield build me a Ready Harness for easy connection to the car. Kudos to Joey (of Crutchfield), who recommended the Ready Harness for use with the SLC-4 Line Converter when I ordered the radio.

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3 of 3 found this helpful

Scosche SLC4 Line Output Converter

Josh from Aurora, CO on 6/6/2018

2005 Mazda Miata

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Easy install, and did exactly what was needed.

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Works well

Armond from Ft Bragg, NC on 6/2/2018

2005 Pontiac Vibe

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Once you have all of those connections as tight as you can (without breaking it) and the gains set ,the unit works perfectly. Trying to situate it in the dash caused some of the delicate connections to come loose so be careful. Dale from customer support had to help me out with this one. I was getting lots of hiss. Turns out I has to re-strip and tighten a few of the connections to cure the problem

Pros: -Seamless integration with premium sound system once adjusted correctly

Cons: -Watch all of those connections. Might take several attempts to manipulate the unit to fit in the dash opening without loose connections -Take your time adjusting the gains. Once set you really don't want to have to remove it again(little connections failing)

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Scosche SLC4 Line Output Converter

Brian from Dover, OH on 5/17/2018

2007 Hyundai Sonata

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Works perfect after calling Crutchfield support line.

Pros: Works good and easy to wire

Cons: Instructions are kinda hard to understand at first.

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0 of 1 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Spanish Fort, AL on 4/29/2018

2005 Chrysler Crossfire

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Excellent junction box for adapting existing wiring to new equipment. Great instructions from Crutchfield

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It just plain works.

Don from Picayune, MS on 4/25/2018

2006 Hyundai Azera

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Simple, straightforward installation and a decent instruction manual. I love the screw down terminal strips. Sounds great with no level adjustment required.

Pros: Easy installation, screw terminals

Cons: None.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Hilliard, OH on 4/3/2018

2003 Pontiac Vibe

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This worked well to reduce the noise due to my new radio and factory amp. I may still teak it a bit, but things are much better than without it.

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Scosche SLC4 Line Output Converter

Doug from Kannapolis, NC on 2/15/2018

2015 Honda Civic SE

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Does the job it should

Pros:

Cons: Unit could use more shielding. Has to be far away from any power wires.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Greensboro, NC on 2/15/2018

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Another great unit that allowed the continued use of the factory installed amplifier. Easy to configure and wire.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Mchenry, IL on 2/11/2018

1995 Ford Mustang

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Easy to install even being a bit beefy to place behind stereo.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Boca Raton, FL on 1/29/2018

2007 BMW 3 Series

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I was told that the Scosche SLC4 line output converter was "mandatory" to connect the Kenwood DNX693S to my factory BMW amp. It was not only not required, but actually dulled the sound quality. Direct wiring from the LC-BMRC-01 to the Kenwood yielded a perfectly matched and detailed sound quality. This might be a great product if it were actually needed.

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2 of 2 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Barnardsville, NC on 1/17/2018

2003 Honda Element

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Good line level converter, a little cheap feeling but decent pasthru austion quality. My biggest qualm being the size of the unit.

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0 of 0 found this helpful

Not really sure how to review.

Ken from Gainesville, FL on 1/15/2018

2005 Nissan 350Z

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converter was mandatory for my car. only worked on one setting so i don't really know what the other options would do. not an audiophile so i cant really give an in-depth review except to say that it does work.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Homosassa, FL on 12/13/2017

2006 Nissan 350Z

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Four stars only because it does do its job. However again, the instructions as to how to use this item were not good. As with most of the directions they were simply too general and poorly written. They did not give enough detail. The set up for this item calls for adjusting certain aspects of the item. The directions were not clear as to what specific items were to be adjusted,. In doing the adjustments to all the items, I never experienced what the instructions said I should. The item does what it is supposed to, but again the instructions were very poor.

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2 of 2 found this helpful

New head unit + existing amp + slc4= success!

Lyle from Cedar Hills, UT on 12/10/2017

2002 Mercedes-Benz E-Class

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Used this to add a new head unit to a car with an existing Bose amp. Instructions were good, install was straightforward, worked like it was supposed to.

Pros: Cheap

Cons: none

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0 of 0 found this helpful

Worked good for amp install to factory

William from Caddo Mills, TX on 12/3/2017

2000 Chevrolet Silverado 1500

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Device did great job isolating floating ground from common ground. Liked adjustments.

Pros: Liked adjustments Good for isolating grounds

Cons: Little larger than i would like

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Scosche SLC4 Line Output Converter

Crutchfield customer from Morgan Hill, CA on 10/24/2017

2001 Mitsubishi Eclipse

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The converter worked fine, and was installed with the harness fine. The only shortcoming of the whole experience was the poor documentation around this device. The small manual that came with it actually advised the opposite of what I needed to do, in adjusting which side's pots. There was no explanation of how this device was used in my specific configuration, how to do the adjustments was not clear, it did not mention the attached side plastic screw driver or the switch I needed to change. I had limited time to get the install done for my daughters car, before she had to leave, and I ended up calling the Crutchfield support number. The Crutchfield support experience was superb. The support guy was great, and it was nice the number and order number came with the documentation. With support help, everything made sense and I finished the install on time. But the poor documentation around this device's deployment brought down the rating. Constructive criticism and an area for improvement.

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Use Jeweler's screw driver

Chester from Bremerton, WA on 10/23/2017

2003 Hyundai XG350

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For what I used of this unit it worked fine. Did not use the Line Out adjustments and the Factory Amp adjustments were turned to the full plus settings so adjustment for my vehicle was minimal but it worked fine. Use of a suitable jeweler's screwdriver seems mandatory to me for this item.

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0 of 0 found this helpful

Works, but fragile

Timothy from Columbia, SC on 9/25/2017

2006 Nissan 350Z

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works good but seems to be fragile. Broke one of the screws when adjusting the gain.

Pros: works like it should

Cons: adjustment screws are very fragile

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Works as it should.

Crutchfield customer from Cheyenne, WY on 9/18/2017

1993 Chrysler Lebaron

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Does what it supposed to do. Instructions were easy and clear. No problems hooking it up and sounds good.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Mesa, AZ on 9/5/2017

2005 Pontiac Vibe

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Works perfectly, easy insertion, nice labeling.

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Easy Install

Elvis from Hewitt, NJ on 8/31/2017

2003 BMW X5

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Easy installation and instructions!

Pros: Easy installation and easy instructions.

Cons:

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Rough start, smooth end

Shawn from Nashville, TN on 8/22/2017

2000 Nissan Maxima

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It took a while to figure out how to install it. The documentation was not the best. Once I figured it out all was well.

Pros: Good sound

Cons: Installation a little difficult

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Works but fragile

Saengtawan from Maryville, IL on 8/4/2017

2005 Nissan 350Z

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Everything worked as expected if set up correctly. Gain adjustment is very fragile, first one that Crutchfield sent me, I broke the gain adjustment right away. Luckily they sent a second one for free. That's always a plus.

Pros: Works as expected if set up correctly

Cons: Fragile

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Scosche SLC4 Line Output Converter

Ron from Morro Bay, CA on 8/3/2017

2005 Pontiac Vibe

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Does exactly what it says it does and still sounds good. I would have given 5 stars, but the directions were a little vague.

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Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from North Hollywood, CA on 7/23/2017

2000 Mercedes-Benz E-Class

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A must have to bypass the factory amp. Works great

Pros:

Cons:

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Great product

Robert from La Verkin, UT on 7/23/2017

1997 Mercedes-Benz SL-Class

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Great product to wire between old and new radio's in My Mercedes Benz SL600

Pros: Great product, great price, small enough to be mounted behind radio

Cons: N/A

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Bulky - Unable to fit in 2003 Land Rover Discovery - Used 2x LOC80s

Guy from Santa Barbara, CA on 7/20/2017

2003 Land Rover Discovery

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This worked OK, but I was not able to fit this in the cavity behind the stereo in a 2003 Land Rover Discovery because of an annoying bracket in the vehicle. Instead, I used 2x LOC80s and mounted one on each side of the bracket. The SLC-4 is rather bulky, so it might be difficult or impossible to fit it in the stereo cavity.

Pros:

Cons: Bulky - Unable to fit in vehicle

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Scosche SLC4 Speaker to RCA

Crutchfield customer from Corvallis, OR on 6/26/2017

2001 BMW 3 Series

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Unit itself is great, but description of where to position the unit and help from Crutchfield was basically non existent. If you wanna put this in a BMW e46, open also the vent compartment and take the AC out. At the end you put the SLC4 underneath the main vents. Just enough space to squeeze it in there! Cheers

Pros: does what it's supposed to

Cons: build in sub-optimal and support not knowledgable.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Marietta, GA on 6/19/2017

1996 Land Rover Discovery

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works great

Pros:

Cons:

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LOVING MY SOUNDS

Brian from Honolulu,HI on 6/8/2017

1997 Mercedes-Benz C-Class

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Easy hook up and easy to install! Chance was the best at helping me get the right stuff for my needs! Thank you Chance!

Pros: Easy to install and use.

Cons: Rather large for its size and was a tight getting it in but it works great!

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Simple

Ted from Narberth, PA on 6/1/2017

2003 Nissan 350Z

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Perfect for Nissan Bose system. Keeps price done and works great.

Pros: Retain your Bose system (Bose no nav.)..

Cons: None.

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Does it's job.

Crutchfield customer from Zephyrhills, FL on 5/24/2017

2001 Mitsubishi Montero Sport

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Does what it says it does but it's bulky and very fiddly. It has it's own gain controls built in to it and if installed behind the receiver you need to make sure you get it set correctly or else you will need to yank the head unit out to make adjustments. Lastly, it says to use the attached plastic screwdriver to attach the wires and adjust the gain. After a significant amount of frustration, I went and dug out my precision jewelers screwdriver set. The 3mm flat head makes working with this thing less stressful by a vast amount.

Pros: Does exactly what it advertises.

Cons: Very fiddly to work with and adjust. Large size makes it potentially hard to stick in the dash behind your head unit.

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Eliminated all white noise w/o comprising sound quality

Michael from Yonkers, NY on 5/22/2017

2006 Jeep Commander

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Ended up having to return a head unit (which Crutchfield made very simple). They shipped me a different one, same problem - a hissing/white noise that we (legendary Crutchfield tech support and myself), could not locate. Tried every ground I could find.....nothing. Tech suggested this idea, too possibly offset my existing Jeep Commander amp.....and, just like that, noise was gone. Connection was easy, and now I am up and running, and speakers sound just as good.

Pros: Ease of hook-up

Cons:

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Scosche SLC4 Line Output Converter

Ben from Sarasota, FL on 5/21/2017

2006 Pontiac Vibe

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Does the trick as it should. Easy to install. Just make sure you tighten down on the wires real good. I had one come loose and it was just dangling around in the dash picking up noise from the engine and apparently the A/C fan motor. Found it and reattached it (and tightened all of them) and now it works perfectly.

Pros:

Cons:

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Scosche SLC4 Speaker to RCA

Jonathan from Boise, ID on 5/21/2017

2002 Land Rover Discovery

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This definitely does what is needed in my case. Couldn't have done the aftermarket stereo without it, unless I was doing a complete system swap. Wasn't in my budget. So this did just the trick with a few annoying issues but works just the same.

Pros: It does do what it's supposed to do, if you can figure out what wiring configuration your system requires. Instructions couldn't be more vague about it.

Cons: Wiring port screws do not hold wires very well. To get them to stay put, I thought I was gonna break it, as hard as I had to tighten each wire down. The size could be a lot smaller. I really had s tough time tucking it into dash and keeping all wires connected. Last con, making adjustments to that unit is a complete stereo removal. Do make sure the settings you want are absolutely correct.

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Great sound

achieng from Edgewood, MD on 5/16/2017

2004 Nissan Pathfinder Armada

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Love being able to increase the sound output

Pros: Great sound to speakers.

Cons: Finding space behind the radio was a challenge. I had to pull the radio out and squeeze it into a place to make room for the radio.

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Scosche SLC4 Line Output Converter

Mitch from Jupiter, FL on 4/25/2017

2000 Audi TT

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I needed this part to connect a modern Sony radio head unit to the Bose amplifier in a 2000 Audi TT. And it does the job well, with the gain adjusted, the system is working as it should. I give high marks to the Crutchfield team for helping me through the replacement. I had zero experience or knowledge going into this project and without their expertise, in providing the necessary parts to get a modern radio to work with 17-year-old speakers and amplifier, the printed instructions and the telephone support, I would never have succeeded. I am only giving this converter three stars for two reasons, both of which have been noted in earlier reviews. First, it is bulky and getting it to fit, behind (actually under) the head unit was very tricky. Second and more serious, getting the wires to stay in the terminal block is a losing proposition, especially when trying to fit the converter into a tight space. The twisted wire ends pulled out four times while trying to get everything into position. I strongly recommend you get wire ferrules/end connectors and crimp them onto the ends of the wires. The screw terminals did a far better job holding onto the ferrules, and I have far less concern that they will come loose and detach over time. Getting the ferrules and crimping tool cost about an extra $30, money well spent.

Pros:

Cons:

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Don't bother

Kevin from Covington, KY on 4/17/2017

2007 Kia Sorento

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Easy to program, but only works with Windows PC's, but worst of all, the unit doesn't control my steering wheel controls, so a lot of time and effort for nothing.

Pros: Easy to program

Cons: Only works with Windows PC's, hard to wire, didn't work after install

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0 of 11 found this helpful

Scosche SLC4 Line Output Converter

Joe from Alabama on 4/12/2017

2006 Acura RSX

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Does it's job.

Pros: Does the thing it was intended for.

Cons: My con is this... it's bulky and it's bulky in a tight spot. That's the only reason I wouldn't give it 5 stars... I will say that there are limited options to do what this does in the space it has to do it in. Nature of the beast kinda thing.

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Scosche SLC4 Line Output Converter

Joe from Dry Ridge, KY on 4/11/2017

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Does it work yes. However it is very very sensitive. I had to use this due to my factory amp. I have a 10 speaker system including a sub. Thus product only has four ins and four outs. So it was difficult to get the sound to sound balanced and I still don't feel like it's right. But yes it works in the sense that when you turn the screws the amplified power moves up and down.

Pros: Works

Cons: Very hard to tune

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Scosche SLC4 Line Output Converter

Crutchfield customer from Memphis, TN on 3/26/2017

1999 Mercedes-Benz SL-Class

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like the ease of useing

Pros:

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Lexington, KY on 3/14/2017

2003 Hyundai Tiburon

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Worked for what I needed.

Pros:

Cons:

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Does what it is supposed to do.

Robert from Lincolnton, NC on 3/13/2017

2008 Nissan 350Z

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The SLC4 was required to interface between my 2008 Nissan 350Z Bose factory amp and speakers.

Pros: Works as designed.

Cons: None

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Installer had no clue

Jerry from Phoenix, AZ on 3/4/2017

2007 Kia Sorento

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Make sure that you call around to other audio installation stores and ask them if they can install this before you order it.

Pros: N/A

Cons: Make sure that you call around to other audio installation stores and ask them if they can install this before you order it. The local installer had no clue on how to make this work with my radio.

Crutchfield response on 3/8/2017
Whenever you encounter a problem with anything you purchase from Crutchfield or have questions about your installation, please contact our tech support team right away. They can help you get this installed or set up a return within 60 days of purchase. Lifetime tech support comes with every Crutchfield purchase.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Reno, NV on 2/26/2017

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Excellent product, easy to use

Pros:

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Flower Mound, TX on 2/14/2017

1987 Chevrolet Corvette

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I'm not an expert by any stretch on this stuff and to be honest didn't really understand what function this device performs. However, it's working so I guess it's doing it's job. The hold-down screws are weak - I had wires come loose after securing them "tight" (numerous warnings about over-tightening so I heeded those). Also, access to the Gain controls is a challenge - they're recessed and difficult to gauge where they're set. Oh, and the plastic tool is attached to the product but you have to just notice that, it's not in the instructions.

Pros: Seems to do the job it was designed to do. Compact size

Cons: Hold-down screws for wiring not very stable. Gain controls hard to adjust or visualize where they're set.

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Scosche SLC4 Line Output Converter

Tom from Cranston, RI on 2/8/2017

2008 Kia Sorento

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Works as designed easy hook up

Pros:

Cons:

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0 of 1 found this helpful

works well

Sean from Orange County NY on 2/5/2017

2006 Acura RSX

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Well constructed, bare wire terminals robust. Easy installation. I would recommend twisting and tinning bare wire before making final connections.

Pros: Does what is supposed to do.

Cons: None

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Scosche SLC4 Line Output Converter

Crutchfield customer from Colorado Springs, CO on 2/1/2017

2011 BMW 3 Series

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Easy to install and instructions provided were helpful!

Pros:

Cons:

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Minor Issues

Timothy from Lexington, SC on 1/30/2017

1998 Mercedes-Benz SLK-Class

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Worked as expected.

Pros: Working

Cons: Diagram did not match the actual part. I/O for RCA jacks. Size is bulky.

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Scosche SLC4 Line Output Converter

Crutchfield customer from Roanoke, VA on 12/31/2016

2002 Nissan Maxima

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This box came as part of the kit to convert the aftermarket stereo I ordered to the Boise system in my daughter's car. It was very assembly friendly for someone not so inclined. I called the help line to clarify a couple of things and they were very quick and helpful.

Pros:

Cons:

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Scosche SLC4 Speaker to RCA

Crutchfield customer from Sierra Vista, AZ on 12/31/2016

1998 Lexus SC300

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instructions are self contradictory page 3 says use "factory amp gain"; page 4 says use "line out gain" Had to call tech to get it right Fits OK on left side of radio in vertical orientation Wish Crutchfield would have told me to get head unit with pre-amp outputs instead of speaker level outputs, instead they were silent and let me make this mistake right up front

Pros:

Cons:

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Works good

Frank from Oklahoma City, OK on 12/28/2016

2008 Hyundai Santa Fe

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A little bulky making it hard to fit behind the radio head. The wires slipped out from the clamps a couple of times. Could use a better way to secure the wires to the unit. Works good though.

Pros: Good adapter

Cons: Little bulky, wires pull out of their clamps even after tightening the set screws quite tightly.

Crutchfield response on

1 of 1 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Clearwater, FL on 12/26/2016

2000 Land Rover Discovery

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Works great, good instructions, kind of big and hard to jam into the space.

Pros:

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Concord, NC on 12/13/2016

1998 Mercedes-Benz SLK-Class

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Very Bulky! Easy instructions.

Pros:

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Virginia Beach, VA on 11/20/2016

2004 Kia Amanti

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Other than being bulky in an otherwise tight compartment, the SLC4 was relatively easy to install. However, making changes to it was not as easy as advertised. Regardless, I figured it out with the help of Crutchfield. It was a necessary evil.

Pros:

Cons:

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Scosche SLC4 Line Output Converter

jon from Lake Zurich, IL on 10/25/2016

2003 Nissan 350Z

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works as expected especially since it came pre attached only could have done a better job of securing the wires in their respective locations

Pros:

Cons:

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Works just fine

Tom from Folsom, CA on 10/20/2016

1999 Mercedes-Benz SL-Class

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Application: 1999 Mercedes Benz SL500. I read many of the reviews about this product before I purchased and was a little concerned about the durability of the unit. It's true that you need to take care not to over-tighten the wire connection screws but, if you're careful and take your time, you shouldn't have any problems. A couple of tips: 1) after you've connected the speaker wires to the unit, put a zip-tie or 2 around those wires for added stability. 2) if you're putting this on a Benz, remove the climate control module above the stereo cavity to give yourself more room in maneuvering the unit into a safe place back behind the receiver/stereo unit. I was able to get my hand back in the cavity to guide this unit to a "safe place" behind the receiver/stereo 3) there is a selector switch on the side of the unit (line out, factory amp, common ground); ONCE YOU'VE DETERMINED THE CORRECT SETTING FOR YOUR VEHICLE, apply some duct tape or clear silicon caulk to keep that selector switch in it's appropriate position because it's a tight fit behind the receiver/stereo and it could move from the correct setting.

Pros: does what it's supposed to do. Just read the directions carefully and call Crutchfield Tech support if you have any questions

Cons: not the most sturdy or durable unit in the world; take your time connecting the wires and installing

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5 of 5 found this helpful

Necessary evil

Crutchfield customer from Austin, TX on 10/16/2016

2004 BMW M3

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Used in my 2004 BMW with HK sound system between new headunit and factory amp & speakers. I'm not sure of an alternative to work with this old set up, so it is a necessary evil. In general, it works and is inexpensive. Things to keep in mind: * This thing is Huge (relatively speaking). I could not fit it behind my headunit so it took hours of extra time and wiring to find it a new home. * Wiring connections for speakers are fragile and insecure. * Adjusting the gain pots is imprecise at best. * Sound quality from it is marginal. That all said, I'm not sure of an alternative for this setup.

Pros:

Cons:

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1 of 1 found this helpful

Scosche SLC4 Line Output Converter

David from Springfield, VA on 9/22/2016

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Works great....I'd like to thank my product advisor from Crutchfield.

Pros: Very easy instruction. Visual a plus.

Cons: None

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Great sound

Arnie from Chicago, IL on 9/19/2016

2002 Acura RSX

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I i bought this converter to use on my car that doesnt have an aftermarket head unit. Im using it with an amp and sub and it does the job it was built for and it does it very well. It's price is cheap bit its built well. Great product!

Pros: Easy to use.

Cons: None

Crutchfield response on

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Great Little Device

Ben S from Thomasville, NC on 9/13/2016

2002 Saab 9-5

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This was originally one of those add-on items I really didn't know what was for. After installing the radio by directly connecting the wiring harness to the stereo, I noticed that I was getting some mild distortion at higher volumes. I called Crutchfield support, and this little device (which I previously wasn't sure what was for) solved all of my problems. It connects between the two wiring harnesses, and allows the user to adjust the gain sent to the factory amp.

Pros: Solved my distortion problems after installing a new stereo by controlling the gains to my factory amp.

Cons: Kind of large. I wish it was smaller. Made everything behind my stereo a very tight fit with little room for adjustment due to to lengths of the wires on my wiring harness. Also, flipping between manuals and writing down wire colors/functions was a little confusing, but well worth it in the end.

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Not Even Worth It For Free

Kevin from Pittsboro, NC on 9/12/2016

2004 Hyundai Santa Fe

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The Scosche SLC4 cannot do what it was intended to do. This is solely the fault of the connection scheme, which cannot stay fastened no matter how hard you tighten the screws. If you think you have it tightened enough, you don't: it can't survive being smushed in to the dash cavity without something coming loose. Cars by definition move and twist and bump, they have forces that act on them in all directions. You can't use a product that you can't rely on staying connected once you've reassembled the dash. Don't be fooled by the low price; it still isn't worth it if was free. In its place I used the Posi-Products Connector Kit from Crutchfield, and two PAC SNI-35 Two Channel LOCs with two Rockford Fosgate RFI2SW RCA to Speaker Wire Adapters from another vendor. The PAC product I think sounds better (for the minute or two I had the Scoshce connected properly), but the bottom line is it has a reliable connection, and that is what matters most. The Scosche product could solve its problem entirely by skipping the screw connectors and going with hard wired internal connections that you can twist connect with products like the Posi connectors or other crimping or soldering methods.

Pros: Sounded OK for the minute or so that it could stay connected

Cons: Connections are completely unreliable; the most incredible sound in the world doesn't matter if it can't stay connected.

Crutchfield response on

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Works fine - easy to install

EngineerBill from Los Altos, CA on 9/12/2016

1997 Mercedes-Benz C-Class

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This adapter works just fine to connect my new JVC radio to the existing Bose system in a 97 Mercedes C280. The screw connectors for the input wires are just fine if you pay attention to how they work before you start turning the screws too much. The screws push down on a metal strip that grips the wire very firmly. Make sure the screw is backed off enough to open up the space for the wire then insert wire and tighten down the screw until you can't pull the wire out of the jack.

Pros: Easy straight forward installation and adjustment. I ended up using a full volume setting on all 4 channels going to the Bose amp.

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Albany, NY on 8/24/2016

2008 Hyundai Sonata

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Easy to use

Pros:

Cons:

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Scosche SLC4 Line Output Converter

Crutchfield customer from Sisters, OR on 8/12/2016

2009 Hyundai Sonata

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It does the job. The instructions are confusing. I had to work with tech support for some time to figure out why it wouldn't work at first. Compression fittings are not supposed to be over tightened but if you don't, they pull out. It's also hard to find a space in the dash to fit something as large as a pack of cigarettes with a double DIN head unit.

Pros:

Cons:

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Great LOC

Justin from Brunswick, ME on 7/31/2016

2007 Mazda CX-7

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This LOC did what it was designed to do and then some. Converted the high level outputs from my aftermarket head unit to feel the factory Bose amp. Really cleaned up the signal without losing too much voltage.

Pros: Versatile. Can accept 4 channels of high level speaker wire inputs. Outputs up to 4 channels as speaker wires or RCAs.

Cons: A little big, but then it can do a lot.

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Waste of time

Rick from Akron ohio on 7/18/2016

2005 Mazda Miata

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Does what it supposed to do but good luck getting it to fit behind your radio. Also pay attention to the wires. Unit will not hold the wires from the radio. The wires consistently come out when trying to stuff unit in the dash. I ended up not using it

Pros: Does what it is supposed to do

Cons: Doesn't fit, wires come out

Crutchfield response on

2 of 2 found this helpful

Scosche SLC4 Line Output Converter

Gregory from Antioch, CA on 7/12/2016

2000 Mercedes-Benz E-Class

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Product is working very nice in my car after reading the instructions I got it together

Pros:

Cons:

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Works Fine

James from Carlsbad, CA on 6/20/2016

2002 BMW 3 Series

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I'm no audio expert, and the instructions leave something to be desired, so it took me a while to figure out that I didn't need to locate the amplifier in my car to hook this up. The SLC4 goes in the dash between the radio and the vehicle's wiring. If you take your time and make sure each wire is screwed in tightly, then the wires won't pull out when you're installing the SLC4. This is important because if you have limited dash space you'll most likely be doing a lot of contorting of the wires during installation. It was a real challenge getting this unit to fit in there with the radio. I had to take more of the dash apart to find a place to tuck the SLC4. I ended up cramming it above the radio, in a small space below the air vents. The radio sounds great, so the SLC4 is doing its job.

Pros: Does the job it's supposed to do.

Cons: Much too big, making it very difficult to fit. Unclear instructions.

Crutchfield response on

1 of 1 found this helpful

Scosche SLC4 Line Output Converter

J from Philadelphia, PA on 6/5/2016

2000 BMW 3 Series

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The Scoche SLC-4 is a mistake. It's very large, so it will be a struggle to jam behind the radio in the dash. But that's not the worst part... It is so cheaply made, that once you take the time to connect both harnesses, you've got to turn these very delicate, yet hard to turn gain screws. Then the screws just shattered. So, it's now behind my dash, and my radio needs to be cranked to 35-40 until you get listenable sound. I'll uninstall it once I get the time. I'm likely to send it back.

Pros:

Cons: cheap plastic, so LARGE, impossible screws.

Crutchfield response on 6/7/2016
Our Tech Support team reached out to help the customer. We'll either help him get this working the way it should, or help him return it for an exchange or refund.

1 of 1 found this helpful

Does what it says on the box

Daniel from Nashville, TN on 6/2/2016

2004 Chrysler Crossfire

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Does exactly what it's supposed to do, and does it very well as far as I'm concerned. Yes, it is a bit on the bulky side, but I was able to fit it in my dash without too much hassle.

Pros: Good sound, several different setup options, reasonable build quality.

Cons: Pretty large, but that should be expected given all of the connections it supports.

Crutchfield response on

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Awful

Seelall B. from Clermont, FL on 5/11/2016

2008 Honda Pilot

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awful gain control. Poorly made.

Pros: None

Cons:

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0 of 1 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Danville, IN on 5/9/2016

2004 BMW 3 Series

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Low quality

Pros:

Cons: Difficult to hook up. Wires don't want to stay connected. Low quality.

Crutchfield response on 5/10/2016
We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

1 of 1 found this helpful

Scorched slc4

Josh d. from New Ulm, MN on 4/27/2016

1987 Chevrolet Corvette

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This item was kinda big for in the dash and the wires wanted to keep pulling out and kinda noisy think this could of been a little better quality part or atleast have the option to purchase a better one only disappointment I have ever had from you guys keep up the good work

Pros: It worked as expected

Cons: To big to put in dash and wires kept wanting to pull out

Crutchfield response on

2 of 2 found this helpful

Scosche SLC4 Line Output Converter

Jerry B from San Jose, CA on 4/25/2016

2003 BMW 3 Series

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Poor instructions and to large to fit into my Dash. This product, I am told, is to turn down some of the voltage so your factory amp does not get overwhelmed by the input from the head unit. So you are supposed to hood it up inline between the factory pigtail converter and the headunit pigtail. You turn on the new head unit and set it to a volume setting of 27, then dial back the screws on this unit until no distortion is heard in the speakers. All of this is done with the blue box is outside your dash and the head unit is dangling from its wiring. Very cumbersome. Then you have to try to push all this back into the recesses of the Dash. This blue box is pretty big. And new cars have very little room any more (at least my bmw e46 is really tight). While pushing the box back into the nether regions of the dash, some of the wires pulled out of this unit, and require further messing around to get that fixed.

Pros: I guess it is needed so as to not harm your factory Amp

Cons: to large to fit modern cars. Not a good wiring connection.

Crutchfield response on

2 of 2 found this helpful

Scosche SLC4 Line Output Converter

Todd from San Diego, CA on 4/23/2016

1990 BMW 325I

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simple to use but can take up space in AN E30 325i BMW

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Worked great

David from Milwaukee, WI on 4/19/2016

2002 BMW 3 Series

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only 4 stars due to size. it worked perfectly, but getting that thing in the dash of a BMW 325xi was a bit of a magic trick. Bottom line--i didn't know i needed it, the sales guy knew i would. I called tech support a few times to go over the hookup, as always the tech support is hands-down the best in any industry. Another successful installation - thank you Crutchfield!!

Pros: worked as prescribed

Cons: just a tad large to get in the dash

Crutchfield response on

0 of 1 found this helpful

SLC4

Zach from Muskegon, MI on 3/31/2016

1996 Ford Bronco

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Works perfect, plug in and adjust the gain.

Pros: Easy to figure out and set up

Cons: Directions could be better but like I said it's pretty easy to figure out.

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0 of 0 found this helpful

Does the job

tomd from albany, OR on 3/29/2016

2000 Pontiac Grand Prix

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Flawless install and operation. Works exactly described

Pros: A passive device. Nice easy big terminations. documentation was easy to understand.

Cons: Foot print and form factor; Adds big section to harness, too big difficult to conceal in dash space. output trim pots need to be closer to surface improved access.

Crutchfield response on

0 of 0 found this helpful

Better product out there

Jared from Texas on 3/1/2016

2003 Nissan Xterra

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It does what it's supposed to... Really deminishes sound quality

Pros: It came with Head unit purchase

Cons: Poor sound quality

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0 of 0 found this helpful

Works great.

1m from Glen Cove, NY on 2/8/2016

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Makes the factory speakers sound amazing!

Pros: Hooks up real easy. Makes the factory speakers sound amazing! Already pre-set.

Cons: There's one black wire that comes off the unit. Instructions don't say what it's for. I found out that it's the ground wire. Just connect that to the ground in the wire harness ground. I had to call Crutchfield to find that out. It's not really a bad thing, but I figured I would post this to save somebody a phone call.

Crutchfield response on

4 of 5 found this helpful

Great product, look at dimensions

DanM from Illinois on 1/17/2016

2002 Mazda Miata

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Great product. I neglected to check out the dimensions until the converter arrived, it is big. When installation is in a larger car its no big deal but this was going into a Miata. With a little wire added to the wiring harness adaptors the unit can be slid off to the side after the level adjustments have been made.

Pros: easily adjusted and works as advertised

Cons: its big

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0 of 0 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Mississippi on 1/14/2016

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Good converter for the price. I have used this on a few systems with no problems.

Pros:

Cons:

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0 of 0 found this helpful

Works great!

BobS from New Hampshire on 12/14/2015

2008 Hyundai Santa Fe

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This product works as advertised. Crutchfield rep helped me understand which configuration to use from the extensive instructions.

Pros:

Cons:

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0 of 0 found this helpful

Works fine, no complaints

Jared H from California on 12/3/2015

1995 BMW 540I

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Worked fine on my 1995 BMW 540i to drop the levels for the factory amp. The unit is bigger than it seems in the pictures and I had a hard time fitting it into the dash.I had to extend the wires off of my harness so I could fit it behind the radio.

Pros: Works as advertised, many different configurations

Cons: bigger than expected

Crutchfield response on

1 of 1 found this helpful

Not needed

Max from Alabama on 10/15/2015

1991 BMW 318I

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E30 w/o external amp has no use. Shipped as recommended part

Pros:

Cons:

Crutchfield response on 10/19/2015
Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Customer Support team. Purchases from Crutchfield can be returned or exchanged within 60 days of the purchase.

0 of 2 found this helpful

Flimsy

Syd from Milford, CT on 10/6/2015

2002 Nissan Maxima

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Difficult to connect / adjust. adjustment screws broke right away - couldn't adjust - wound up not using altogether

Pros: none

Cons: very poorly made

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0 of 0 found this helpful

Easy to use

Ryan from Missouri on 10/4/2015

2005 Chrysler Crossfire

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The box is easy to use but is a little bit big for tight spaces

Pros: Easy to use

Cons: Size

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0 of 0 found this helpful

Good Product

GautamB from Minnesota on 9/28/2015

2003 Nissan Maxima

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Its overall good product.

Pros: Good product, amplification level is good.

Cons: Screws are very light, a bit more press can break the tuning gain screws.

Crutchfield response on

2 of 2 found this helpful

It Works but could be better

DD from Georgia on 9/24/2015

2003 Mercedes-Benz CLK-Class

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The product works as describe but the terminals where the wires are connected would be better served as a vampire style terminal that would bit into the wire. When the wire is stripped it is hard to get the terminal screw tightened down enough to secure the wire into the terminal. If it was a vampire style, you could leave the jacket on the wire for a tighter fit and still make contact with the actual wire. The terminal screws are tiny and fall out when loosened enough to feed the wire in and sometimes will get lodged inside the plastic case. I had to open my case to get the terminal screw out again. This thing is huge and it is very difficult to find room for it in an already crowded console opening.

Pros: Works well when connected.

Cons: Wire terminals could be better to secure the wiring and the case is way too big.

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0 of 0 found this helpful

Fragile as can be

Jason from Buffalo on 9/13/2015

1998 Ford Mustang

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Does the job, but be very gentle when adjusting the gain

Pros: makes interface possible

Cons: super fragile

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0 of 0 found this helpful

Good Product

Luke P from Indiana on 9/10/2015

2004 Mazda 6

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Great product. installed it my self with ease.

Pros:

Cons: none

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0 of 0 found this helpful

Good product

Matt from Toronto, Ontario on 9/7/2015

2000 Mercedes-Benz SL-Class

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Works perfectly. Had a few issues as I felt that the manual was not detailed enough. The team at Crutchfield was more than helpful in clarifying what needed to be set and outlining the wiring for an R129.

Pros: Works brilliantly. Once you figure it out, is simple to set up.

Cons: Manual could explain a little more. A little bit big (packaging wise), had to extend input speaker wires.

Crutchfield response on

2 of 2 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from New York on 8/30/2015

1995 Mercedes-Benz SL-Class

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A+++

Pros:

Cons:

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0 of 0 found this helpful

Hard to control or change adjustments

ujjwalm from fairfax,va on 8/26/2015

2006 Hyundai Sonata

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Nice product can do the job it require to. I tried this with my car. Sound was really low on driver/passenger speakers. On checking with customer service this is not required since i don't have subwoofer in the trunk. Tip - Use little stick on the side that is provided with scoche to adjust the gains. I realized it after i messed around some screws in adjustments.

Pros: Easy to wire and hook-up.

Cons: Hard to adjust gains. One needs to take the Radio out if there is any adjustment required. It would have been good if there was an adjustment provided via remote. small dash cars will have problem placing this unit.

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0 of 0 found this helpful

Scosche SLC4 Line Output

TommyL from Rogers City, MI. on 8/3/2015

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The unit was easy to install and getting excellent results. Pay attention to gain adjustment to keep hum to a minimum. I highly recommend this product.

Pros: Easy directions and small.

Cons:

Crutchfield response on

2 of 2 found this helpful

Does the job

PhilH from New York on 7/13/2015

2007 Pontiac Vibe

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Crutchfield included this in my installation kit to interface between my JVC KD-R660 and my 07 Pontiac Vibe with the factory Monsoon audio system. The Scosche SLC4 was necessary to adjust the line output from the receiver going into the factory amp.

Pros: Crutchfield support talked me through why I needed this unit and how to install it - they're the best.

Cons: No specific installation instructions were included, but as stated above, Crutchfield tech support provided what I needed.

Crutchfield response on

1 of 1 found this helpful

LOC

Kevin from Houston Tx on 7/6/2015

2014 Ford Mustang

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Works as advertised. Paired this with a alpine frv300 amp for mids and highs and made a huge difference over Stock head unit.

Pros:

Cons: wish it had somewhere to attach a remote wire for the amp.

Crutchfield response on

0 of 0 found this helpful

Didn't know I needed it, Crutchfield did

da from Florida on 6/24/2015

2005 Honda Element

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Researching the stereo for a non-specified vehicle, I saw the install kit. When I specified the vehicle, the kit price jumped to twice as much and this device was included. I didn't think I needed it, but Crutchfield knew better. Glad I trusted them, because if I had just bought the stereo, I'd be pulling my hair out, scrambling to find a way to properly run the stereo to the factory amp.

Pros: Sound is clean and wire mapping was simple.

Cons: You need extra space behind the dash to house this device.

Crutchfield response on

0 of 0 found this helpful

You will need this

Tom G from California on 6/21/2015

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You will need this to wire a stock radio to a RCA amp.

Pros: Works Great

Cons: None

Crutchfield response on

0 of 0 found this helpful

Simple and effective, but a warning!

John from Kansas City, Mo on 6/21/2015

2006 Toyota Tacoma

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I needed this unit to wire my alpine head unit to a 5 channel amplifier. The head unit only had RCA outputs for the subwoofer, and just the wire harness for the rest of true channels, and they were amplified by the internal amplifier, so this unit was the converter I needed. The instructions were very straight forward and easy to understand, and taking my time I had zero issues with the connections required. WARNING: Make sure you adjust the levels on this unit BEFORE you stuff it in the dash and install your cosmetic trim, or you'll get zero sound from your new amplifier, causing at least 3 minutes of confusion and head scratching. Derp. Overall, an excellent product that performs well. Crutchfield's tech support and customer service are, as always, TOP NOTCH! 5 stars all around.

Pros: See above

Cons: be careful not to tighten the sets crews too tightly. Take it slow and easy, and you'll have no problems.

Crutchfield response on

1 of 1 found this helpful

Perfect

DaleC from Pennsylvania on 6/2/2015

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I originally didn't think that I needed this part for my 04 Hyundai Santa Fe but after putting wiring the stereo harness to the car I didn't get any sound so I called the help line. The tech understood my problem and echoed that he also didn't realize that his vehicle had an external amplifier under the passenger side seat. Once I located it I knew that this part was in fact necessary in order to utilize the Monsoon sound system installed in the vehicle. I wired the harness to the converter, leveled the sound dials, and slid it into the cavity behind the stereo. It was that easy and the sound is incredible!

Pros: does what it is supposed to do, instruction manual details the diagram for the order of wires to be sequenced with the converter.

Cons: the dials should have a number sequence so that you can set each dial equally with the others which would make the leveling of your sound a not so tedious task.

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0 of 0 found this helpful

Great Product

Sarah from Virginia on 5/26/2015

2006 Toyota Corolla

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Great product for needed installation. Staff was very helpful during the whole process.

Pros:

Cons:

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0 of 0 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Azalea, OR on 5/11/2015

1987 Chevrolet Corvette

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Great price and worked great.

Pros:

Cons:

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0 of 0 found this helpful

good product

BMAC from Utah on 5/7/2015

2002 Mazda Miata

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I had read several reviews and had some concern about this product. I found that by following the instruction it did exactly what it was made for and the sound control was amazing. Just need to add enough wire to the harness to be able to tuck it in the dash.

Pros:

Cons: none

Crutchfield response on

1 of 1 found this helpful

Versatile, does the job

Alex from Illinois on 4/30/2015

2005 Hyundai Santa Fe

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Used this to adapt an aftermarket head unit to the Monsoon amp in my 2005 Santa Fe, works well. To make sure I had a snug connection for the thin wires in the 2 harnesses (probably 22 ga) I stripped them to about 3/8" then folded them back double and tinned, gave a very secure hold by the screws. Adjusting the levels to the same for all channels is a little tricky because of the way the pots are recessed in the case. I set one channel in the car and then took the harness assembly in the house and set the other 3 using a flashlight and magnifying visor to see the position of the markings. Would have been much easier if the pots were at the surface and/or had detents. I used the recommended process for setting the levels so it starts to distort at 3/4 volume but found with some sources I didn't get enough - went back and set it so that I started to hear sound at about 3 out of 35, much better. Unit is pretty large because it can be used in 4 different ways, I have lots of room in my dash so no issue but I can see how some might have a problem fitting it in. I would have preferred to be able to get a harness with RCA's that would go direct like they had for my Avalon with factory amp but it wasn't available. At least it was half price with my order.

Pros: Works well to match levels using factory amp, versatile for other applications

Cons: Tricky to see pot settings, large case due to multiple functions, not free with order

Crutchfield response on

2 of 2 found this helpful

Great customer support

Jason from Colorado Spgs, CO on 4/29/2015

2000 Nissan Maxima

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Needed this for my sons Bose system. Had a question and tech help was there. Awesome. Love Crutchfield

Pros:

Cons:

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2 of 2 found this helpful

Scosche SLC4 Line Output Converter

Adrian G. from Jamaica, NY on 4/26/2015

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It's not bad, I just think adjusting the settings to maximize the clarity at top volume left some to be desired.

Pros:

Cons:

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0 of 0 found this helpful

Willing to sacrifice audio quality?

DenCon from Ellensburg, WA on 4/12/2015

1996 Saab 9000

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Let me start by saying that I'm a tinkerer (I'm an IT tech) - I repair electronics that are not meant to be repaired and I'm not afraid to experiment; I'm a perfectionist - perhaps a little OCD. This LOC (line output converter) does what it is supposed to do - supports a variety of installation challenges; but audio dynamic range suffered in my situation. I used it to connect a Nakamichi NA250BTR to my 1996 Saab 9000 Nokia amp (has a good reputation). It killed ground loop noise, but bass and treble were flattened - the music lost its audio soul (all that survived was mostly midrange). I tested this by switching from line-level connections without the LOC to line-level connections with the LOC and I noticed a big loss in audio quality. If I tried grounding this unit with its built-in ground, the ground-loop noise returned with a vengeance. The included instructions are somewhat unclear. Connecting and adjusting this unit is a delicate operation, as the tiny pots (volume controls) are delicate, as are the wire clamps, and the included tool is pretty wimpy. Take extra care to make the adjustments uniform, as there is no indexing or other means to assure uniform adjustments from one channel to the next. Having said all this, if you have a complicated installation and are willing to sacrifice some audio quality, this unit will get you going. But if you are willing to put in more money, time and effort, you might be able to do without - and get better results in the bargain.

Pros: Flexible Filters out unwanted noise Appropriate for the beginner

Cons: Unclear instructions (lack detail), tech support is basic Audio quality suffers

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3 of 3 found this helpful

I guess it works

Dude221 from Florida on 4/1/2015

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I guess it works because there is no popping noise and the stereo sounds great. I went by Crutchfield's recommendations to install this and everything works fine. As a newbie, I did not know how or where to install the device--I thought it went through the RCA jacks into the car's amp. After removing removing the rear seats and interior trim I discovered the amp had no where to attach the converter. I called Crutchfield support and they told me to install it between the car's wiring and the new receiver's wiring. The converter takes the place of the wiring connectors. You unscrew tiny screws in the converter, slip in the correct color-coded wire from the car's wiring and tighten the screw. Then you do the same on the new stereo. I wish the instructions on the converter were a little more simplified for novices like myself who have no clue as to what the device is doing. A picture of the new stereo wiring---> converter---> car's wiring would make things simpler. Make sure all the wires are tight and not touching each other ( or else the speakers won't work).

Pros: Works well.

Cons: Difficult to follow instructions for a novice.

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0 of 0 found this helpful

Junk

Crutchfield customer from Leesburg, NJ on 3/22/2015

2010 Hyundai Sonata

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Speaker wires kept coming out. Screws are so small I had to use eyeglass screwdriver. Cheaply made junk.

Pros: Only good thing about it- it did the job, barely.

Cons: Absolute junk, poorly made, screws way too small, wires kept coming out even when tightened.

Crutchfield response on

0 of 1 found this helpful

SLC4

Shane from Florida on 3/17/2015

2007 Scion tC

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First off, let me say that this product works in my 2007 Scion tC with a stock head unit. With that being said, the product is very average.Would i recommend this to you? If you have after market subs, then yes, however, if you do not, I would pass because this LOC has little to no bass. I don't know if they just made it that way or what, but it just doesn't push any bass through, and i actually about the bass problem after buying it, and can confirm it. It does do its job though, and I am happy with my purchase. Lastly and please read this! You must use 16 gauge speaker wire! You might be able to get 14 gauge to work but it will be a pain in the butt. The screws that hold the wiring are too small for 14 gauge. Please, lol, use 16, it will save a lot of frustration. It holds 16 tightly.

Pros: Works fine Pushes great highs

Cons: Absolutely no bass Frustrating Install

Crutchfield response on

1 of 1 found this helpful

Didn't work

BrianS from Oregon on 3/8/2015

2005 Honda Element

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Didn't work. Even after talking to Tech support.

Pros: none

Cons: no worky

Crutchfield response on

0 of 2 found this helpful

Scosche SLC4 Line Output Converter

Mike C from Mechanicsville, va on 3/3/2015

2005 Ford Explorer Sport Trac

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Product works, but wire connections are not strong enough to hold when some stress is applied.

Pros: Works as described

Cons: Wires kept pulling out of slots no matter how much tightened down

Crutchfield response on

0 of 0 found this helpful

scosche

DR from eldersburg, maryland on 12/18/2014

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works great did exactly what crutch field said it would.

Pros: ComPact

Cons: Have to shove behind head unit.

Crutchfield response on

0 of 0 found this helpful

Scosche SLC4

Russ from Beavercreek, Ohio on 12/7/2014

2008 Pontiac Vibe

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The Scosche SLC4 was required with the factory sound system in my car. The instructions are just a little vague but the tech support team at Crutchfield made it really easy.

Pros: works great

Cons:

Crutchfield response on

1 of 1 found this helpful

Confusing manual

Madkins from Omaha NE on 11/18/2014

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Easy to use with Crutchfield's help, but has multiple set-up options that I could not figure out independently.

Pros: Easy to use with help

Cons: Manual is confusing

Crutchfield response on

0 of 0 found this helpful

great product

stand from north carolina on 11/16/2014

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great

Pros: easy

Cons:

Crutchfield response on

0 of 0 found this helpful

Works great

J from Clanton, AL on 10/8/2014

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I purchased a S/O amp without speaker level inputs due to a great price. Used this product to wire it up. It took some additional time to install but was worth the trouble as the sub sounds great

Pros: Installs easily

Cons: Takes up additional space

Crutchfield response on

0 of 0 found this helpful

not needed

tylerg from anywhere Georgia on 10/2/2014

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This part was not needed shouldn't have been offered or suggested i needed it since i was receiving the installation kit

Pros: It wasn't too expensive

Cons: Didn't need it

Crutchfield response on 10/13/2014
The SLC4 was added to your order because, while the stereo does have 4-channel preamp outputs, those outputs only pass a 2-volt signal. The vehicle's sound system needs a higher voltage in order to sound its best. You are welcome to return the SLC4 if you aren't using it, but our professional recommendation is that your audio system will perform better and sound better with this adapter in place to step up the voltage to your factory amp.

5 of 5 found this helpful

Perfect

FS from Navarre, FL on 9/14/2014

2007 BMW 3 Series

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Works as it is suppose to and easy to install.

Pros: No modification

Cons: None

Crutchfield response on

0 of 0 found this helpful

Pretty good product.

Brian A from Saugus MA on 8/26/2014

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Works as intended. Kind of big to fit under the dash. Make sure you tin your speaker wires or the clamps wont hold. Installed in GMC Jimmy with Bose system.

Pros: Good instructions.Good price.

Cons: Kind of big to fit under the dash. If I made this i would put a harness with a plug on each end of the box and provide 2 plugs. One to terminate the source wires and one to terminate the wires out to the amp. Also the ground wire is fairly short.

Crutchfield response on

0 of 0 found this helpful

no room

william from ca on 7/14/2014

2001 BMW 3 Series

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the product works fine, this is the first time that I have issues installing a stereo on a car, there is no room in the car to install this without modification and the instructions were not accurate at all,

Pros: sounds good

Cons: not for just anybody to install you have to have some experience you need to take lots of parts out to get to it.

Crutchfield response on

1 of 3 found this helpful

Meh...

mBrane from US on 6/28/2014

2008 Kia Sorento

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So, Crutchfield indicated that this was mandatory for the pairing of my new JVC KWHDR81BT CD Receiver with my 2008 Kia Sorento. No. Not accurate at all. Here's the trick; if you tune the SLC-4 using Bluetooth as the source, the output is louder and you'll leave the output pots cranked down a bit from max. Then, after wrestling the SLC-4 into position, mounting my head unit, and buttoning up all the trim, I was *underwhelmed* when I heard an FM source. I could max out the head unit without distorting the sound! It infuriated me that I was "leaving something on the table," so off cam the trim, out came the unit, and out cam the SLC-4 for more tuning. I ended up maxing out the SLC-4, which is the same as not even having it in line at all! So, now I have an extra piece of gear in my audio system waiting to fail, while also creating higher-resistance connections, because I would have connected directly and used solder instead. I just *love* knowing that there are 16 screws holding in the wiring in the SLC-4, any of which could work its way loose at any time. So, I've got *that* going for me!

Pros: - flexible support modes

Cons: - pots are recessed and require a screwdriver (forget that plastic simulation of a screwdriver that they attach to the unit for your convenience. Worthless. Use your own.). - pots should have long plastic caps that can be twisted with your fingers. Geesh! - too big!

Crutchfield response on 7/8/2014
Our Tech Support team reached out to the customer to troubleshoot the situation. If it turns out that the SLC4 is not needed, the customer can return it for a full refund.

2 of 2 found this helpful

Madza Miata Boss System

Crutchfield customer from Schaumburg, IL on 6/21/2014

2004 Mazda Miata

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Excellent I was not sure why this was needed but wired per instructions. Set up in car bf closing to make adjustments all of the sudden I hear back speakers which I could not hear or adj in original Boss stereo!!! Balance all with pot adj and works great

Pros: Speakers sound great

Cons: A challenge to fit in tight area for stereo notch room plenty of wire so set off to side w double stick tape and fine

Crutchfield response on

2 of 2 found this helpful

Line Converter

Frank C. from Bothell, WA on 5/23/2014

2003 Mazda Miata

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My 2003 Miata has a Bose Amp and speakers installed at the factory however the inputs to that amp are wired through a wiring plug rather than using RCA inputs.This device allows your aftermarket stereo to use factory amplifier systems without being overdriven. Without this device I would have had to run all new speaker line to bypass the amp. The factory Bose amp puts out more power than the aftermarket head unit by itself, so it would have been ludicrous not to use it.

Pros: Easy connection screw terminals, and simple to set up.

Cons: Just one more thing to tuck into cramped dash space

Crutchfield response on

4 of 4 found this helpful

Works, but can be a pain to install

PD from Denver, CO on 5/13/2014

2005 Pontiac Vibe

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This thing worked as promised, but not without some hassle. Splicing it in between the new stereo and the wiring harness was a bit of a pain, and then it was really challenging to get it into the dash behind the stereo. Seems like for what it is it could be more compact. Instructions on setting the gain levels were pretty cryptic. Seems to be adjusted OK but perhaps it could be better? Will never know.

Pros: Works

Cons: Bulky; instructions very cryptic

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5 of 6 found this helpful

Simple enough

JohnD from Ann Arbor, MI on 5/13/2014

1999 Chrysler 300M

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It's simple enough. attach wires, make adjustments. done. You will need a small screw driver and patience.

Pros: Cheap, multiple setting and outputs

Cons: Instructions not clear. Need small screw driver.

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0 of 0 found this helpful

good

Crutchfield customer from Kissimmee, Florida on 4/28/2014

2006 Hyundai Santa Fe

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It does what it's supposed to.

Pros: great price.

Cons: Did not understand the instructions well, Difficult to adjust

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0 of 0 found this helpful

Does what it is supposed to do

Adam from Louisville, CO on 4/27/2014

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Used it to connect to my factory Bose amp and seems to work fine. I had a little bit of distortion at first but then turned down the adjustment screws and disconnected the ground wire it comes with and much improved sound. Like most reviewers have stated it does appear a little cheap and I just hope it keeps working. Very hard to see adjustment screws and I was constantly worried about getting enough grip on the speaker wires w/out stripping out the tiny screws. Just have patience and it should work fine. I will keep my fingers crossed as to longevity. Overall, Crutchfield Tech Support was awesome quickly helped me find what I needed to do from the confusing manual.

Pros: Works

Cons: Seems kind of cheap (longevity?)

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1 of 1 found this helpful

Scosche SLC4 Line Output Converter

AliS from Logan, UT on 4/13/2014

2005 Hyundai Santa Fe

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We ended up having to buy a converter for this to be compatible with our car, which was pretty obnoxious, but other than that it works fine.

Pros:

Cons:

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0 of 0 found this helpful

Didn't end up needing it

Shawn from Albuquerque on 4/12/2014

1994 Dodge Ram 1500

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Didn't end up needing it

Pros:

Cons:

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1 of 1 found this helpful

Not impressed

Sir Yarquest from Springfield, MO on 4/7/2014

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We were having major issues getting a Kenwood Head Unit to work in an 06 Acura RSX that at one point had a Bose system in it, still had the factory Bose amp and Sub. Then the head was replaced with an older Alpine head unit, which work great with the factory Bose Amp and Factor speakers and sub, but the head unit was out dated. I did direct swap out but it did not work, we had power, no sound. We called and Crutchfield recommended this unit. It worked great for about 15 minutes. Then all we had was bass. Then it died. Ended up pulling all our own wires and bypassing the factory amp and installing a Kenwood amp for both front and rear speakers and replacing the sub with a Infinity 12".

Pros: Easy instructions

Cons: The screws are very cheap and super small heads. It only worked for a little while and then died. Bulky, hard to mount behind head unit.

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5 of 6 found this helpful

Easy/ handy

Silly norwegion from Warminster, PA on 3/29/2014

1993 Saturn SL2

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I had a new amp from a long time ago and never used it and decided lets put a bit of a kick in my 93 saturn but i had no rca jacks . Now i do lol this thing was perfect and hooked up easy.

Pros: Easy hookup.

Cons: None

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1 of 1 found this helpful

Converter review

Ron from Chestertown, MD on 3/29/2014

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Doesn't feel well made. I was really afraid I was going to break it during install.

Pros: Allows use of stock harness

Cons: Frail connectors and view of adjustments

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0 of 0 found this helpful

Scosche SLC$ Reviwes

Javier from San Juan, PR on 3/17/2014

1995 BMW 530I

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The fixtures works very good.

Pros: I love the fact that the outputs can be adjusted.

Cons: The size is too big and makes it hard for the installer the radio installation on the limited space inside the car dash.

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1 of 1 found this helpful

ok

smb from Charlottesville, VA on 3/6/2014

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Does what it needs to do

Pros:

Cons:

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1 of 1 found this helpful

Worked Perfectly

Chris from Atlanta, GA on 2/26/2014

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I was not ready to replace the head unit in my 1998 F-150 but the speakers had to go. Used this to install an aftermarket amplifier to my stock head unit.

Pros: Easy to install and conceal, and worked flawlessly. Perfect low-cost solution.

Cons: can't find any

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1 of 1 found this helpful

Scosche slc4

ddaanniieelldd from mesa,az on 2/3/2014

1994 Chevrolet C Series

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Did what it was intended to do

Pros: liked the screws to tighten down the wires

Cons:

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1 of 1 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Lookout Mtn., GA on 1/18/2014

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good product

Pros:

Cons:

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1 of 1 found this helpful

Adapter for Factory Power Amp

RichW from North Carolina on 12/29/2013

1995 BMW 540I

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Works well - works as advertised and instructed.

Pros: Easy to install

Cons: None

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1 of 1 found this helpful

You need this item in your car sound system

cbp from Houston, TX on 11/21/2013

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This device made my system nice and clean. I put this device right by my head unit and then ran the wiring back to my 4 channel amp. It made the signal strength great for my system. My amp does not have to work as hard because it is pushing the signal to my amp.

Pros: Compact and clean

Cons: only 80 amps per channel.

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1 of 2 found this helpful

Scosch

WG from Plainview NY on 11/9/2013

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Simple to use and works great- only problem I had was that I accidentally hit the button on the side when I was putting everything back together and it didn't work at first.

Pros:

Cons:

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0 of 0 found this helpful

So easy a first-grader can do it

Nate from San Diego, CA on 10/28/2013

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I'm new to car audio, and when I realized I'd need a Scosche adapter I was worried that I was in over my head. After opening the box my fears evaporated because it could not have been simpler. In fact, since all that was required was color-matching I let my 6 year-old daughter try her hand at some "Daddy work" and she loved it. I stripped the wires going in and she handled the rest. Sound quality was fine and everything worked great.

Pros: Easy to use and handle

Cons: It was bulky getting everything back into the console but if you want an easy fit you should make a system that doesn't require an adapter.

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3 of 3 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from beeville tx on 9/30/2013

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works just fine

Pros:

Cons:

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0 of 0 found this helpful

Scosche SLC4 Line Output Converter

Crutchfield customer from Highland, CA on 9/7/2013

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Excellent buy

Pros: This is great for hooking up an amp to a stock system! Very easy to install with great sound quality... No hissing

Cons: Can't really think of any

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0 of 0 found this helpful

Did not need

DickF from Naples, FL on 8/5/2013

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Was told at checkout that I needed this, but didn't. Crutchfield refunded the price.

Pros: don't know - didn't use

Cons: didn't need. seems complicated to install.

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2 of 7 found this helpful

Perfect Solution

Al the Bassman from Westwood, NJ on 7/31/2013

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This was the perfect solution. I had added a Sound Ordinance under seat subwoofer to my Subaru & was having issues getting it balanced to my factory stereo. Due to the low voltage output from the factory head I was forced to connect the speaker outputs to the line-in on the subwoofer. This caused the subwoofer's remote level control not to work correctly - too little bass or way too much, no happy medium. I suspected I needed to attenuate the factory head's output. So a call to Crutchfield's tech help & the tech recommended the Scosche SLC4. This unit would enable me adjust the heads output level so the subwoofer's remote level control would allow a full range of adjustment to get the bass level just right. Installation was easy; I used Velcro to fasten it under the seat on the carpet adjacent to the subwoofer. I did have to tweak the controls on the SLC4 & subwoofer to achieve the perfect balance to enable the subwoofer's remote level control to have a full range of usable adjustment. So everything is now perfect & I can even add or subtract bass on individual songs to my taste. Just one word of advice don't mount the SLC4 to the subwoofer enclosure as its internal circuit board is a bit loose & will rattle noisily with the music. Other than that it is a great solution & product for a reasonable price.

Pros: easy to install, works great, & price is reasonable

Cons: none

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1 of 1 found this helpful

Good Product

Tim from Cincinnati, OH on 6/27/2013

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Overall the installation was easy and technical support was fantastic. The screws to secure the wires are small and I read the prior reviews prior to installing the unit. Be careful and don't overtighten the screws and everything goes great.

Pros: easy to install excellent tech support

Cons: small fragile screws

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0 of 0 found this helpful

did the trick

jim from Fresno, TX on 6/10/2013

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worked fine for what i needed.

Pros:

Cons:

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0 of 0 found this helpful

Scosch SLC 4 on 2011 Ford F 150

Jesse M from Kyle, TX on 4/14/2013

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Great product if your wanting to keep your factory stereo

Pros: Easy to install. I gave it. 5 stars because I don't have to pay a lot of $$$$ for aftermarket stereo so I can add an amp

Cons: No cons

Crutchfield response on

0 of 0 found this helpful

Great Little gadget!

AnthonyB18 from Mechanicsburg. PA on 2/15/2013

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I bought this because I wanted to add a amp to my truck without removing the factory radio since it has sync. It installed in about 10 minutes. Works great!

Pros: Cheap, small does what it is intended to do without any issues.

Cons: hard to mount. I installed it in my glovebox so i could still adjust the settings and it worked out fine.

Crutchfield response on

1 of 1 found this helpful

94 Mercedes S-class

Richard from Los Angeles on 10/13/2012

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this was perfect for getting rid of the popping noises in my S-class after i installed my new headunit, i took the advise of somone on a forum and connected the 5V line out directly to the factory Bose amp, it worked, and it sounded great but every time i changed the radio station or changed tracks on a cd it would make a loud pop, it got to the point where i never used the radio or cd only my Zune, this cleared up my issues, and i installed one my friends Mercedes now hes a happy camper too.

Pros: does what it needs to, and adds 4 more rca outputs.

Cons: kinda big and hard to fit inside the dash along with the adapter harness.

Crutchfield response on

1 of 1 found this helpful

Great little device for addressing some knotty issues

Old Car Guy from Texas on 10/5/2012

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Being a vintage/classic car collector I ran into a bad problem in attempting to install a modern radio in a 1978 Lincoln Continental Town Car and this little guy solved the problem. For anyone having a Ford product of the 1970's era, Ford chose to use a common ground connection at the factory radio for all speakers. New radios cannot be installed with such a grounding scheme which will very quickly cause the amplifier section to overheat and fry. It gets hot enough before failure to be a fire hazard at worst or would melt a CD at best. Instructions that come with the device are pretty simple and straight forward. Finding a place for it in the dash may be a bit of a challenge but not impossible. Basically if you are needing to do an installation as the one I did this is the only game in town. Just make sure you have any modern radio grounded per that radio's installation instructions. No exceptions or reach arounds.

Pros: Get's the job done!

Cons: Size can make it difficult to find a good place to secure it.

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0 of 0 found this helpful

Easy to use...must have for using

JimmyJ from Hartford, CT on 6/25/2012

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You need this if you intend on using your factory amp...fairly simple to set up and install...just follow the directions - I needed one call to support and they took great care of me...in and out in 5 minutes on the phone and it worked perfectly...

Pros: Simple to set up

Cons: Feels a little cheap..."plastic-ish"...but it works

Crutchfield response on

1 of 1 found this helpful

Just what I needed.

Bklynyc from DC on 6/16/2012

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Works fine, did exactly what I needed.

Pros: Works great and priced right!

Cons: None that I've experienced thus far.

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0 of 0 found this helpful

Great Product

Chris S from Baltimore, MD on 11/22/2011

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Great overall product, definately recommend to anyone installing to a factory head unit.

Pros: Did just what I needed. Multi-use. Really can be the "brain" of your systems setup

Cons: Speaker inputs are a bit tiny.

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0 of 0 found this helpful

MADE LIFE SIMPLE AGAIN

Z28guy from Munroe Falls, Ohio on 9/21/2011

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This was just what the doctor ordered. We wanted to retain the factory amp but still use the aftermarket head unit we had. This made it possible to do both without cutting up the factory harness or trying to track down wires. A++

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1 of 1 found this helpful

Hard to conceal

Crutchfield customer from St Pete FL on 7/23/2011

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Very hard to hide and fit in dash behind factory or aftermarket stereo.

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Cons:

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0 of 3 found this helpful

Works Great

Buck from Michigan on 5/28/2011

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The SCOSHE Line convertor Works as stated. Hookup was easy and the staff at Cructhfield, Helpful as always. The biggest negative with this box is the plastic case it is housed in and really has no way to mount it. You basically have to Zip tie it where you want it.But It works great. If you have a stereo with speaker wire outputs and want to run them in an Amp via RCA jacks, this box is a must and reasonably priced. Thanks Crutchfield.

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0 of 0 found this helpful

Fixed the volume

Tim from Vermilion Ohio on 3/15/2011

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This adaptable unit plugged right into my aftermarket harness, and after one adjustment solved my volume problem

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0 of 1 found this helpful

It does the job

BartK from Bolingbrook, IL on 1/25/2011

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This thing works, quite well too. The enclosure is however a bit on the flimsy side and taking care to read other users' comments on the frail components, I took care not too over torque anything. Use discretion, its a tiny screw not an engine shaft nut. Does the job as a LoC.

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0 of 0 found this helpful

No good

Cincinnati Marine from Cincinnati on 1/5/2011

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Tryed it in a 2000 celica and a 1997 Accord. Couldn't get my sub to do anything more than move slightly. Hooked the sub to a head unit in my 78 camaro that has rca jacks and it worked fine. Judging by the reviews, your rolling the dice with this thing. I gave it 2 stars because hook up was easy.

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0 of 4 found this helpful

Works like a charm just need to know what your doing

carlos from Panorama City, CA on 12/25/2010

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Just installed this blue beauty, its true what some reviewers said About the feel of it being kinda cheap, but i hooked it up to my wifes 2000 civic and the sub kicks with ease. It didnt take long to figure how To connect it, just read the instructions and it should be easy, i had No problems connecting it, its true it doesnt have usable mounting Holes but with a little ingeniuty and zip ties it looks professional. Once again i repeat, read the instructions and it should be super Easy. I had a harder time routing cable than connecting this superb Gadget!

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1 of 1 found this helpful

Waste of money

CraigE from Portland, OR on 9/20/2010

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This product is just what my review states... a waste of money. First of all it didn't work; or I guess I should say it functioned, barely. I tried to use it to tap into my rear factory speakers in my 2008 Legacy. It sent a signal to my amp but it was very weak even with the gain all the way up, there was very little volume and what volume it did have, sounded terribly muddled. A direct connection from my MP3 player to my amp proved my amp and sub to be operating just fine but this little piece of junk just didn't work, despite my troubleshooting it Even a call to Cruthfield tech support yielded no results. I gave up and just ordered an amp with speaker-level inputs and voila! it worked like a champ. Not to mention it's not working properly or weak gain, (maybe I got a defective one but it's too late to return it now) but this item feel incredibly cheap. The plastic is very fragile. It's not durable. It fell off my speaker box (about 14 inches tall) on to our pergo floor and it busted in two! What kind of cheap nonsense is that? There are no mounting options for this either, leaving someone who wants a clean install to make it jimmy'd with zip ties or something else. I should have listened to the negative reviews of this product, instead of believing the ones that said it worked.

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6 of 11 found this helpful

Eh

My_Fast from Philadelphia, PA on 6/28/2010

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Didn't get it to work in my 2008.5 VW GTI. So I gave up and gave in and just bought a new headunit anyways with the outputs I need. Could have been easily been user error... buuuut I wouldn't bet on it. It feels ok enough, I didn't expect much.

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1 of 3 found this helpful

Scosche SLC4 Line Output Converter

Guest from Columbus, OH on 4/19/2010

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Since the 2005 vibe w/ moon and tunes package has an OEM amplifier, this product was suggested on another forum to decrease background noise. Seems to be working great so far. I wish there was more guidance as far as what to do with the black ground wire though. I've heard on other forums you can just tape it off, or ground it. I splice it into the HU ground/wire harness ground and that seemed to work ok. My complaint with this device is that the included screwdriver is terrible. Use your own screwdriver if you have one. Also, they say to be very careful not to overtighten. Well after the wires falling out about 300 times, i said "screw it" and tightened them down pretty good. They seem to be staying put now. Just takes a few times to get the feel of how hard you need to tighten. Give the wires a little tug, if they fall out, tighten harder.

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2 of 2 found this helpful

Crutchfield should offer a better LOC

David from OR on 1/25/2010

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I grabbed one of these in a pinch. It does the job and is inexpensive, but it's also cheap. Cheaply made, cheap feel, not very confidence inspiring. When connecting wires to the inputs the tiny screws don't give enough bite and you feel like you're going to break them before you get a solid connection. Gain control dials are also fragile feeling and others have commented on how easy they are to break. There are other, better options on the market that Cruchfield should consider. - D

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4 of 5 found this helpful

Great Product

BumpinResponsibly from Pittsburgh, PA on 12/8/2009

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I put this in my 2005 Ford Taurus because getting a head unit and a Dash Kit is very pricey for my model. I worked with a professional mechanic installing it. What we did was tap into the rear speakers so I could run a subwoofer amp. It works great but the only thing is you miss out on having more control over your amp than you would have if you got a new head unit. But if your looking for something that gets the job done right, get this LOC. After having this for a long time, I finally decided to just get money and get a new head unit and dash kit. Great sound quality. Good Price. Easy to install. Get this product.

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1 of 2 found this helpful