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Scosche LOC90 Speaker to RCA Line Output Converter

2-channel speaker-to-RCA line output converter with remote level control

Item # 142LOC90

Scosche's LOC90 line output converter transforms high-level speaker wire signals to a set of line-level RCA...

Read more from Crutchfield writer, Bob B.

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$24.99

About the Scosche LOC90 Speaker to RCA Line Output Converter

Converts speaker-level signals to preamp-level

Scosche's LOC90 line output converter transforms high-level speaker wire signals to a set of line-level RCA outputs. If your car radio doesn't have preamp outputs, this 2-channel converter lets you tap into speaker wires to send up to a 4-volt signal to the preamp inputs on your 2-channel or mono amp.

Converts speaker-level signals to preamp-level

Scosche's LOC90 line output converter transforms high-level speaker wire signals to a set of line-level RCA outputs. If your car radio doesn't have preamp outputs, this 2-channel converter lets you tap into speaker wires to send up to a 4-volt signal to the preamp inputs on your 2-channel or mono amp.

The converter will turn on your amp when it senses an incoming signal, so there's no need for a turn-on wire. If you're installing a subwoofer, the package includes a wired remote control for adjusting the bass level from the front seat.

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Product highlights:

  • line output converter with remote level control
  • converts speaker wire outputs to RCA outputs
  • allows addition of 2-channel or mono amps to factory and aftermarket stereos
  • works with high-powered car stereos (up to 50 watts per channel)
  • includes mountable remote control for controlling subwoofer level from dash
  • warranty: 90 days
  • Our 60-day money-back guarantee
  • MFR # LOC90
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What's in the box:

  • Line ouput converter
  • Wired remote control (w/ attached 17' cable terminated by a right-angle 3.5mm connector)
  • 2 Screws
  • 3M tape
  • Instructions
  • Survey Card

Customer reviews

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Scosche LOC90 Speaker to RCA Line Output Converter Reviews

Average Customer Review(s):

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More details on the Scosche LOC90 Speaker to RCA Line Output Converter

Product Research

Features

Line Output Converter: The Scosche LOC90 Line Output Converter converts speaker wire (high-level) to RCA outputs (low-level) for the purpose of adding an aftermarket two-channel or mono amplifier to an existing factory or aftermarket stereo system which lacks low-level outputs. The LOC90 features up to 4 volts output and works with high power car stereos up to 50 Watts (RMS) per channel.

Wired Remote Control: The LOC90 also includes a convenient remote mountable volume control for precise control over a subwoofer amplifier's volume level from the front of your vehicle. The wired remote is fitted with an attached 17' cable terminated by a right-angle 3.5mm male connector which plugs into the LOC90's minijack (3.5mm) remote input. The wired remote control is designed to be mounted under the dash using the included 3M tape or two self-tapping screws.

Connections: The LOC90 features four speaker level input wires and a stereo line-level output. There is also a +12V power wire, ground wire, and turn-on lead.

  • Speaker Inputs: Connect the left (+) speaker wire of your car stereo to the white wire of the LOC-90 and connect the left (-) speaker wire to the white/black wire of the LOC-90. Then connect the right (+) speaker wire to the gray wire of the LOC-90 and connect the right (-) speaker wire to the gray/black wire of the LOC-90.
  • RCA Outputs: Connect the RCA output jacks of the LOC-90 to the RCA inputs of your amplifier or EQ booster (Red = Right, White = Left).
  • Power/Ground: The +12V power wire (yellow) must be connected to your vehicle's constant battery power, while the ground wire (black) needs to be connected to your vehicle's metal surface.
  • Turn-On Lead: Signal sensing turn-on lead (blue/white) for aftermarket amplifier turn-on.

Output Level Adjustment: The LOC90 Line Output Converter is equipped with output level controls that can be adjusted for proper sound level matching. This done by inserting a small flat-blade or phillips-head screwdriver into the gain adjustment holes, located on top of the LOC-90. by turning clockwise, the gain for that individual channel, or the amount of sound allowed to pass through the LOC-90 is increased. By turning counterclockwise, the gain for that individual channels is decreased. If you feel that after increasing the volume of your stereo, the sound is too quiet, then equally increase both the left and right gains of the LOC-90 until the sound level is adequate. If the sound level is too loud with only a slight increase in stereo volume, or distortion (poor sound quality) is noticeable, then equally decrease the gains of the LOC-90.

Dimensions:

  • Line Output Converter: 2.1875" (w) x 1.125" (h) x 3.5625" (d)
  • Wired Remote Control: 1.9375" (w) x 0.875" (h) x 2.875" (d)

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
My factory head unit had no rca outs behind the head unit, so i will convert speaker level signal to line level RCA jacks. [ Michael  Mar 06, 2019 ]
A
Just needed a converter for my factory stereo [ Rockwell  Feb 28, 2019 ]
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I have one and i like it [ P  Feb 27, 2019 ]
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Tom, my advisor, reccomended them. [ Cody  Feb 26, 2019 ]
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So I can hook up my sub and amp to the stock stereo [ INHO  Feb 12, 2019 ]
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Needed to hook into factory stereo to run second amplifier independently for a second aftermarked subwoofer. [ DUSTIN  Feb 04, 2019 ]
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Convenients [ William  Jan 04, 2019 ]
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Combined remote level and high level converter in one unit [ J  Dec 02, 2018 ]
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to send signal to a sub [ joseph  Nov 30, 2018 ]
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Used this in a buddies car and it worked amazingly well. Decided to use it for my build as well. [ LiamH  Nov 22, 2018 ]
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I purchased this item because this really hot girl needed it so her car stereo would thump. [ john  Nov 12, 2018 ]
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I am installing a subwoofer in my car with my factory stereo system. [ George  Nov 12, 2018 ]
A
I plan on keeping my stock radio so one of the advisors told me to get this LOC. I'm hoping it's not too difficult to install. [ Bradson  Aug 13, 2018 ]
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Provided everything I needed to get my subwoofer hooked up. Line out and remote turn on! [ Jason H.  Aug 01, 2018 ]
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To splice into my floor subs on my 328xi and hook into aftermarkent amp and subwoofer [ Jacob  Jul 06, 2018 ]
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I have a stock Bose system in my vehicle and have been running this for a few years now. I purchased a JBL amp recently and tried to use the high level to rca adapters that came with it. It was a stronger signal but my subs had a really bad/loud humming noise when i turn the my stock head unit off or turn the volume to 0. I'm tapping into the subwoofer out from the Bose amp. I also tried a PAC line out converter but that didn't fix the noise like this. Getting another as a back up just in case. [ Jun  Jul 05, 2018 ]
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because it should work. i did read reviews [ lorena  Mar 27, 2018 ]
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It seems like the best price for this item [ Rick  Mar 10, 2018 ]
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I was Recommended to get it for my Chevy Impala [ Harlan  Mar 03, 2018 ]
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Ease of installation and it worked great in my Jeep Grand Cherokee Overland to install a sub it should work just as well in my 2017 Nissan Titan [ Darrel  Feb 22, 2018 ]
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Already have it in my other truck. It works. [ Mark  Feb 09, 2018 ]
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To hook up my amp with a compact unit that was cheaper. [ Rick  Jan 16, 2018 ]
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recommended to install aftermarket subwoofer in factory stereo [ Robert  Jan 14, 2018 ]
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I have a source with a 10w 8ohm output and no line output. Not only will this convert it back to line for the amplifier I bought, but it also has a remote volume control. Perfect for my application inside a Ghostbusters proton pack movie prop! [ James  Aug 30, 2017 ]
A
Good for the money. Seems like a quality product [ Patrick  Aug 24, 2017 ]
A
Need the auto-sense turn on as the factory stereo ('17 Honda Civic) does not have a turn on lead for my amp. [ Rhett  Aug 21, 2017 ]
A
wanted a lineoutput converter with a remote turn on for my sound ordinance b8pdt [ C  Jul 12, 2017 ]
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This way I can control my subwoofer without having to go to the back of my Jeep. [ Kimberly  Jun 18, 2017 ]
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For remote turn on and line level control / plan to use for subwoofer channel [ Sean  Jun 17, 2017 ]
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To keep that factory look in my car. [ WILLIAM  May 31, 2017 ]
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Ease of install [ Brian  May 24, 2017 ]
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to hook up amp and subs to factory deck in 2015 elantra [ DEVON  Apr 18, 2017 ]
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using factory head unit [ Alan  Apr 02, 2017 ]
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Just incase I need it for a friend. [ Gabriel  Mar 24, 2017 ]
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I just bought a new Jeep with a infinity system that needed a little more bump [ forest gump  Jan 26, 2017 ]
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The scosche quality [ JERRY  Jan 03, 2017 ]
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I chose this so that I would be able to install a subwoofer in my father's car without replacing his factory head unit. Am I a great son or what? [ Jonathan  Dec 12, 2016 ]
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I needed it to hook up my stock radio to the amp I purchased. [ Woody  Nov 26, 2016 ]
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simplicity and added feature of an amplifer signal wire [ David  Aug 23, 2016 ]
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My customer was not ready for a complete overhaul of his sound system. The helpful information that I got from Crutchfield Advisor suggested the Scosche LOC90 to get him on his way. [ Tim  May 08, 2016 ]
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Had remote wire hookup [ Tyler  Feb 23, 2016 ]
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Hook up external amp to factory head set with no rca outputs. [ Christopher  Feb 22, 2016 ]
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I have two sets of pre outs on my pioneer head unit and 2 amps and a self powered subwoofer that need to be fed thru the head unit. A line out converter would help me feed the self powered sub. [ Mark Daniel  Feb 16, 2016 ]
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I chose this for my 2015 Toyota Corolla to hook up my amplifier without having to install an aftermarket stereo. [ Taylor  Jan 08, 2016 ]
A
Works great [ Ricardo  Dec 06, 2015 ]
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16 questions already asked

Q
I installed to specification but it will not turn off amp? What is wrong
[ Doug  Mar 06, 2019 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Mar 13, 2019 ]  Staff
Q
I ran the power wire for the line output converter to my amp where it connects to the batter, now it doesn't turn right off. Should I wire the power for the line output converter to the head unit?
[ slabboss  Jul 13, 2018 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Jul 16, 2018 ]  Staff
Q
Will this work w a 1 channel amp for one sub?
[ skorpyo33  May 14, 2018 ]
2 answers
A
I agree with Jeff! This line output converter will work with a mono (1 channel) subwoofer amp My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=101
[ Paul  Jun 04, 2018 ]  Staff
A
Yep, I have it for my sub amp. Works great.
[ jeff  Jun 03, 2018 ]
Q
i have a 2018 honda accord. how do i figure out which rear speaker wire color is positive and which 1 is the negative ?
[ shahan  Mar 30, 2018 ]
3 answers
A
Set a multimeter to measure DC voltage, and touch the speaker wires to the probes. If your probe is touching a wire with an opposite polarity, such as the positive probe to a negative wire, you will get a negative numerical reading. Try switching which probe you're using to get a positive reading instead.
[ Codi  Mar 30, 2018 ]
A
Use a multi meter to check the output. Set it on 12v and put the leads on the speaker terminal. If it doesn't read with a minus in front of the voltage then the red lead will be the positive and the other the negative.
[ BILL  Mar 30, 2018 ]
A
See if they aren't left negative brown and right negative orange. The positives are yellow and blue in same order from left to right. That's a 2017. Hope this helps ??
[ DAN  Mar 30, 2018 ]
Q
Is it appropriate to connect the yellow power wire directly to the car battery for a continuous source?
[ Mitch  Mar 17, 2018 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Mar 25, 2018 ]  Staff
Q
I have a 2006 Pontiac G6 where do I hook up the remote wire to a 12 volt Source because I am using a line output connector?
[ Wade  Apr 05, 2017 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the connections on the product. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Kenny  Apr 05, 2017 ]  Staff
Q
My amp works without the RCA cable's power and negative wires hooked up, will this continues to work or will eventually stop?
[ Cody  Feb 20, 2017 ]
1 answer
A
Thanks for your question. For information on amp control I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to discuss how your current system is set up and if it is ideal. They can make recommendations as well to keep your system running trouble free.
[ Kenny  Feb 20, 2017 ]  Staff
Q
Will I need this to add a mono amp and single subwoofer to an Altima Coupe w/ Bose (no navigation) ?
[ mpache002  Feb 06, 2017 ]
1 answer
A
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on how everything integrates and what you will need for an installation in your vehicle.
[ Kenny  Feb 06, 2017 ]  Staff
Q
Will this fit my 6016 mazda 6? non bose
[ Josh  Oct 01, 2016 ]
1 answer
A
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Kenny  Oct 01, 2016 ]  Staff
Q
Will hooking up yellow wire to constant power keep the amp on all the time causing the battery to drain down ?
[ James  Apr 02, 2016 ]
1 answer
A
The Scosche LOC90 has a signal sensing turn-on lead (blue/white) for connecting an aftermarket amplifier remote lead--this will automatically turn your amp on when a signal is present to the high-level inputs on the LOC90 and then turn it off when it stops receiving a signal. I hope that helps. My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=159
[ Larry  Apr 06, 2016 ]  Staff
Q
I installed this LOC in my Silverado because I wanted to add a sub and amp and still use my factory radio. My question is when adjusting the input sensitivity, would it be better to start with the amp or the LOC?
[ ERIC  Nov 10, 2015 ]
4 answers
A
I just set the loc at like 3/4 on the 2 flathead screw gain adjustment. I left the " bass " knob off. Then did a standard tune with the sub amplifier. Sounds great.
[ Evan J.  Nov 14, 2015 ]
A
I would start at the converter. I set my converter around 75% and then gradually set the amp. Hope this helps
[ jon  Nov 12, 2015 ]
A
I would leave it in the middle just like plugging your phone to your radio if the volumes to high on the phone you will get distortion try adjusting the amp first might be just enough.
[ AFRIM  Nov 11, 2015 ]
A
I personally have better luck starting with loc.
[ Benjamin  Nov 11, 2015 ]
Q
How long is the remote turn on wire?
[ Evan  Sep 18, 2015 ]
4 answers
A
About 1FT. Short but if you just add a crimping sleeve and pinch it you can always add more wire to suit your purpose. I installed it in a friends car about 4wks ago, NO ISSUES works great! I would buy this unit again for a factory radio install.
[ Dennis  Sep 21, 2015 ]
A
I would say about 8 inches which is the same for all wires leading off. Definitely not long enough to be routed anywhere but long enough to tap directly into some rear speakers or harness behind stock HU.
[ Jesse  Sep 20, 2015 ]
A
Short... i think less than 12 in. ... plan to match/ have equal distance for remote wire same as rca's. So pan to extend it unless/ if you wire it right next to the amp. Meaning if you want to hide the LOC and need 5ft length for rca, get 5 ft of (blue)remote wire Also plan to get wires to run 1. power and 2.ground + 3. a fuse... (for 12v) I bought 6 ft. long red/black/blue 16 guage. This device requires 12v power & ground. You should * fuse the 12v - 5A is enough. You could probably use 18 -20 guage.
[ GREGORY T  Sep 18, 2015 ]
A
its pretty long. I don't know the exact length but I would say at least 4-5 feet long.
[ Joseph  Sep 18, 2015 ]
Q
I have a 1994 Volvo 940 and am interested in using this to add an amp for a single sealed 10 inch subwoofer. I have the sub, amp, wiring, etc now and need a line out converter. how does it connect into the OEM stuff? the rear speakers? i'll be upgrading everything soon, but for the time being, I want a little bump! Thank you!
[ Stephen  Aug 22, 2015 ]
6 answers
A
ake signal from right(+ & -) and left speakers(+ & -) connect to loc... 1. now run 12v power from battery (w/fuse) 2. Run ground. Now you plug rca's into LOC and connect remote output to the amp. Adjust the LOC... done :)
[ GREGORY T  Sep 18, 2015 ]
A
The converter wires to you factory rear speakers and is also your remote power.
[ mickey  Aug 27, 2015 ]
A
You splice the box's wires in line with the radio's output wires. So you can splice this product in at the rear speakers or directly behind the head unit. There is also a nice option with this that splices 12 volts power in so you can have your amp's remote spliced to it instead of all the way back to the head unit. When it receives a signal from the speaker outputs, it will put 12 volts on the remote wire and turn your amp on.
[ robert  Aug 24, 2015 ]
A
You can tap into the rear speakers in the rear or just behind factory head unit. Either way works fine. Converter works great. Also has remote turn on built in. If you use the included bass knob you'll have full control at your fingertips. Just make sure you ground converter.
[ jon  Aug 23, 2015 ]
A
Uu got it. Rear speakers, just as the instructions suggest. I used the rear power point (cigarette lighter) for the power source on the converter is an all time power. So you don't need to have one that turns on and off for the converter to dignal the amp to turn on. Remember, with this converter there is NO need to take the dash apart.
[ Evan J.  Aug 23, 2015 ]
A
If your installing the amp in the trunk the rear speakers are you best choice for source for input. This item requires two speaker level input a 12v input and a ground. Fron this it will give you two rca outputs and a 12v remote output.
[ carlos  Aug 23, 2015 ]
Q
Is there a way to install an loc and an aftermarket amp in addition to a factory amp?
[ Brandon  Apr 16, 2015 ]
3 answers
A
Yes, but to ensure the best possible signal you should tap into the line after amplification.
[ Jesse  Sep 20, 2015 ]
A
f course.
[ GREGORY T  Sep 18, 2015 ]
A
YEs but first does the factory system have a subwoofer? or better yet is the aftermarket amp you want to install going to be for a subwoofer?
[ Andrew  Apr 17, 2015 ]
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