Skip Navigation

AudioControl LC2i

2-channel line output converter for adding amps to your factory system

95 Reviews | 27 questions - 67 answers

Item # 161LC2I

This item is no longer available.

Shop all Line Out Converters

New model available

AudioControl LC2iB




Our take on the AudioControl LC2i

Looking for great sound from your factory radio? Would you like to upgrade your car's premium system? AudioControl's LC2i line output converter takes amplified speaker-level signals and converts them into high-quality preamp signals that can be fed to another processor or amplifier. In other words, it lets you create an awesome car audio system without disturbing your factory controls or features.

Looking for great sound from your factory radio? Would you like to upgrade your car's premium system? AudioControl's LC2i line output converter takes amplified speaker-level signals and converts them into high-quality preamp signals that can be fed to another processor or amplifier. In other words, it lets you create an awesome car audio system without disturbing your factory controls or features.

Get your bass back
Some factory radios dial down the bass as you turn up the volume to protect their speakers. The problem is, they don't give it back when you upgrade to a nice set of aftermarket speakers. AudioControl packs the LC2i with their AccuBASS™ circuitry that reverses the factory bass rolloff, giving you the bass you need to enjoy your music to the fullest. Place the LC2i between your factory system and your bass amp, and you'll hear a huge difference in bass response.

High-voltage signal for great sound
Some premium systems use multi-wire speaker cables for systems with multiple speakers. The LC2i features two speaker-level inputs that let you connect amplified signals up to 400 watts, including cables from Bose® and other premium factory systems. The LC2i then sends out a high-powered preamp signal — up to 9.5 volts RMS — that helps every amp perform to its maximum ability.

The optional dash-mount remote control allows you to adjust the level of your sub channel on the go. The speaker-level inputs sense incoming signals and turn on the LC2i, while a built-in 12-volt trigger tells your amps or other gear to turn on when you start your car.

Product Highlights:

  • 2-channel active line output converter
  • designed to work with most factory systems
Inputs and outputs
  • 2 speaker-level inputs with 400 watts RMS power handling
  • Main (full-range)and Bass (for subs) preamp-level outputs
  • level matching controls
  • subwoofer level control output (for optional wired remote)
  • AccuBASS circuitry restores bass signal
Other features
  • signal-sensing turn on
  • 12-volt turn-on lead output
  • recommended fuse rating: 1 amp
  • dimensions: 6-1/2"W x 1-1/2"H x 3-1/4"D
  • weight: 1 pound
  • warranty: 5 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Two-Channel line-output converter
  • Instructions/Specs/Warranty (on packaging)
  • Quality Control Certificate

Was getting alot of distortion from my old Monster FX100 LOC. Bought the LC2i, installed it, and distortion was gone. Great product and the customer service is even better. Called customer service and Erik was great at helping me with the install.

AnthonyO, North Dakota


AudioControl LC2i Reviews

Average Customer Review(s):

(95 Reviews)

Amazing piece of equipment

Anonymous from kent, OH on 2/16/2016

Crutchfield Customer Review (What's this?)

If you're adding an amp and subs to your factory system, forget that standard line output converter. Spend a little extra $$ and you will get what you pay for and then some. Incredibly simple install myself and I have little experience. This will provide a clean bass sound and you can tune it just the way you like the sound. I paired this with the 8" compact powered kicker sub, adding on to the factory system in my Jeep Wrangler. I had high expectations and those expectations were exceeded. I never realized one 8" sub could sound so good. You won't be disappointed.

Pros: small, easy install, easy tuning to your liking, get all the benefits of your amp/subs

Cons: no cons, fantastic piece of equipment

Great Addition

Utennessee6 from Memphis, TN on 12/20/2015

Crutchfield Customer Review (What's this?)

This was the perfect addition for my 5 channel amp install. I am using a Rosen nav setup that works with my 2015 wrangler oem controls. My Polk audio amp only needs 1 set of RCA connectors to set up all 5 channels. Also helps with the loss of base with high volume. Easy install . I am using (Polk db6501 speakers front and rear, and jlaudio stealthbox, and Polk PA D5000.5 amp) in my 2015 Jeep Wrangler unlimited.

Pros: Compact design, easy install, helps with bass loss

Cons: Only 1 main RCA output but audiocontrol offers other models with more if needed

Super Nice!

TronH from Henrico, Virginia on 8/4/2015

Crutchfield Customer Review (What's this?)

2013 Honda Civic LX. Factory Head Unit. 2 Amplifiers. Woofer. 2 tweeters. Factory speakers. Before buying the LC2i, I used the speaker level inputs on one of my amps, then feed RCA out of that amp out to my bass amp. There was a high speed switching noise in the audio. I purchased the LC2i, used that to interface with my Factory Head Unit, then from that to my 2 amps. High speed switching noise gone. Plus it was feeding a nice clean and clear high voltage signal to my amps. Deeper bass and more volume head room. One amp is driving my woofer (with LPF) and the other is driving my rear speakers and the tweeters. I'm use a HPF on my rear speakers. I could not be happier with my system.

Pros: The LC2i is a real problem solver.

Cons: having to play around with the controls to get the sound right.

Highly recommend

AnthonyO from North Dakota on 8/3/2015

Crutchfield Customer Review (What's this?)

Was getting alot of distortion from my old Monster FX100 LOC. Bought the LC2i, installed it, and distortion was gone. Great product and the customer service is even better. Called customer service and Erik was great at helping me with the install.

Pros: Easy install Great Product Even better customer service

Cons: None


Bee Jay from Florida on 4/26/2015

Crutchfield Customer Review (What's this?)

Very good substitute for a stock head unit replacement. If you own a late model vehicle, & don't want to replace the stock stereo control head, this is the thing for you. Initial setup was a little trial & error, but once set up properly, it worked as advertised. I was able to eliminate the lows in my stock speakers & basically boost the pre bass notes to the amp with minimal distortion.... if any. Most bang for your buck in my perspective,.... only if you take the time to set it up right!

Pros: Adjust ability, versatility. Easy to install. Compact.

Cons: None really, Know what your attempting to purchase.....

very easy to use

Anonymous from pa on 4/12/2015

Crutchfield Customer Review (What's this?)

I used the cheap ones before but this product made the sound extremely clear...great product


Cons: None

best sound and bass

14 camaro from tempe az on 3/31/2015

Crutchfield Customer Review (What's this?)

Sounds great! Have tried many other similar products and this one takes it!! Clear crisp bass, adjusted for my preference in sounds and love it. Running 2 jl 12w7s with 2 slash v3 1200's on a stock headunit in a 2014 camaro.



Works Great thus Far

Anonymous from Casper, Wyoming on 3/24/2015

Crutchfield Customer Review (What's this?)

It is a great product for a stock radio. Works like a charm however it was a little tricky to put in but it's worth the time.



Awesome performer

Stan from FAirbanks, ak on 3/12/2015

Crutchfield Customer Review (What's this?)

I removed the factory subwoofer from my 2014 ram 1500 and hooked this upto the factory wires. Works amazing the sound quality is awesome the tuneing capabilities are great. I have this hooked to a JL audio hd750/1 and two JL audio w6v3 in a custom box. Highly recommend. Installation time was minimal and straight forward. It accepts upto 400w on the inputs so you can wire it to any head units speaker level output. Crutchfields support and customer service was amazing as always.

Pros: Ease of use, performance, tuneing capabilities.

Cons: None I can think of

Does what it should

Anonymous from Tulsa, OK on 2/19/2015

Crutchfield Customer Review (What's this?)

Does what it should do. Easier to install that it first appears. Great sound quality.

Pros: Easy instal, great sound quality, level controls.

Cons: Expensive.


Reef from Pompano Beach , Fl on 12/28/2014

Crutchfield Customer Review (What's this?)

Used to install Kenwood amp and subs to factory system in 2014 Genesis coupe , hits harder than most systems around :) definitely recommend ...



First ever online review GREAT!

Dr.Joe from Canada on 12/24/2014

I have never ever written a review for anything online but I thought this product deserved it. It's great. I recently bought an F-150 and tried to tough out the stock system, I couldn't. I installed this today, along with an amplifier and subwoofer, took me a couple hours as I've never removed the dash or floor trim on an F-150. I always had aftermarket audio equipment in my vehicles but did not want to change the deck in the F-150 because it already had everything I wanted; bluetooth, voice command, steering wheel controls, usb and auxiliary but not a subwoofer. I was VERY skeptical about the way this was going to sound but I must say I'm blown away. It sounds just as good as having an aftermarket deck, granted my speakers are not amped but the stereo sounds great and MUCH better than the stock. I do not recommend installing this if your not comfortable installing stereos as it can be a little tricky if you're not a pro. Anyways if your looking to add a subwoofer to your factory system THIS IS the product to get. I thought I'd write a an installation review because I couldn't find a decent one online. LC2i must have a -12v constant -12v accessory -ground -remote in/out (out going to your amp) -speaker wires that have been tapped into (i did right rear) to the lc2i -rca's from lc2i to your amp 5 stars!

Pros: great sound easy to install (if you've installed stereos before) lots of tuning options

Cons: a little to big to hide, about the size of a postcard

awesome product

Gary J from Norfolk, VA on 12/15/2014

Crutchfield Customer Review (What's this?)

I bought this broduct for my 2013 focus ST so I could hook up aftermarket amp and subwoofers with stock head unit and it worked perfectly

Pros: Easy install Small unit that was easy to hide from sight


Line Output Converter

Ricky Bobby from Chesterfield, VA on 12/3/2014

Crutchfield Customer Review (What's this?)

Fantastic product. Tried using hi level inputs, but sounded terrible. Thought about one of those $20 dollar LOCs, but after talking to some other installers decided against it. One installer told me that his rockford fosgate distributor uses all audiocontrol equipment. After installing, I had to turn the Accubass feature all the way down. It may be good for subwoofers but I'm using for my full range amplifier (Helix Blue B Two) and 6x9 (Pioneer TS-D6902) combo. It's crazy how much extra bass this thing can produce. Can't tell the difference between this with a stock hu and a good aftermarket hu.

Pros: Quality signal output

Cons: Slight "pop" when turning car on

worked for a bit....

Donnie from independence mo on 11/20/2014

Crutchfield Customer Review (What's this?)

Worked for a few months, then it was turning my amp off and on while I want in the car. Woke up to a dead battery not knowing that's what it was doing. Jump started my car, drove to work and made sure my car would start before working my shift. After my shift, dead battery. Jumped my car and got a new battery. After installing it I went over my car trying to find the problem, look in the trunk and there it is. My amp going in and off due to this product. So now I'm out 80 for lc2i and 80 for a new battery. I don't recommend this product from my experience. I may have just got a defective one, who knows.


Cons: Defective

LC2i in 2013 F150 SCREW XLT

JPR from Jacksonville, Florida on 10/27/2014

Crutchfield Customer Review (What's this?)

Very nice alternative to a standard LOC. It works exactly as described. The GTO (Auto Turn On feature) works very well and also turns on my amp/sub combination. I still need to spend time find tuning the settings as I am trying to compensate for the roll off from the factory head unit and send the correct signal to the Sound Ordnance B-8PTD

Pros: Easy install, works as described

Cons: More in depth guidance on settings would be appreciated

Great product

toneb210 from San Antonio, TX on 10/24/2014

Crutchfield Customer Review (What's this?)

I replaced my passive line out converter with the Audio Control device. I had got some new 12 inch JL w3 subs and the sound difference wasnt much better over my old 10 inch w1's. After researching I found this device. Saw great reviews and a great price, so I ordered it. After install it was immediately noticeable that the Audio Control lc2i puts out a much better signal that the standard passive loc. My subs hit harder, deeper, louder, and cleaner. Best alternative to getting an aftermarket head unit, or a way more expensive JL or kicker device. Pay attention to the instructions and do the level matching properly. After all, these settings are what set the lc2i apart from other loc's. After only one day im still playing with the accu-bass setting to see where I like it, as well as gain on my amp. Its also a quality build. Not some little plastic box. I highly recommend.

Pros: Fairly easy install. Quality build, great settings and output.

Cons: None so far.

AudioControl LC2i

Juan from San Diego, CA on 10/12/2014

Crutchfield Customer Review (What's this?)

I used this to install an aftermarket amplifier & subwoofer in my daughter's 2009 VW Jetta. This does exactly what it states, it provides a high quality pre-amp signal to the amplifier that is free of any noises or turn on/off pops. Setting it up was very easy to do, & the signal sensing feature is a very nice thing to have. There was no need to find a remote trigger source, as this unit sends the amplifier the signal once is senses a signal from the stereo. I highly recommend this unit.

Pros: Easy to use & setup. Provides a high quality signal free of any noise. No need for a remote trigger.

Cons: None

Audio Control LC2i

Jeff from Springfield MA on 10/5/2014

Crutchfield Customer Review (What's this?)

Excellent product, easy installation, if it wasn't for this product I would not have been able to add amplification and additional base to my OEM high end system. The OEM wiring makes it impossible to add on components however the LC2i made it simple and possible!

Pros: Simplicity

Cons: More details on installation of power and ground


Anonymous from South Bend, IN on 9/23/2014

Crutchfield Customer Review (What's this?)

Great product; worked just as advertised.




Foxman from Lockport,il on 7/21/2014

Crutchfield Customer Review (What's this?)

Very impressed with product. no nonsense straight forward packaging.



it works great

fred from Del Rey, CA on 7/12/2014

Crutchfield Customer Review (What's this?)

Its works really great the sound is great too and amp trun on is awesome

Pros: amp turn on and the bass control

Cons: lack of instructions


Dan from Manteca, ca on 6/15/2014

Crutchfield Customer Review (What's this?)

Instructions stink, does not make it clear that the system needs power. Other than that works as it should.

Pros: Easy to install, sounds great.

Cons: Instructions stink, kind of expensive.

Easy to connect

jp from Miami,FL on 5/27/2014

Crutchfield Customer Review (What's this?)

Taped into factory sub output to get signal and it works perfectly, also the remote out for amp is great.

Pros: Turns on with radio signal and has remote on for amp.

Cons: non

Remote Trigger works great

Tom from New Haven, CT on 5/22/2014

Crutchfield Customer Review (What's this?)

I needed to replace old PAC unit which failed with the power always on to my subwoofer amp. (killed my battery). Anyways this is also triggered from your car speakers, so when you turn on stereo, it triggers LC2i to fire up and send remote signal to my sub amp. (just like the PAC used too.) Sound and adjustments seem much better from subwoofer as well.

Pros: Easy install, remote trigger features, better sound.

Cons: none.

Great Product

Daniel Lee from Brooklyn, NY on 5/5/2014

Crutchfield Customer Review (What's this?)

The best bang for the buck for a cheap mod to your factory radio. Does not have the full features of the JL Cleansweep but it is also only 1/3 the cost. Great if you just want to add a sub.

Pros: Easy to setup and install. Automatically creates a remote line from the speaker line input which is a great feature.

Cons: None.

Very Nice

Russ from South Dakota on 3/15/2014

Crutchfield Customer Review (What's this?)

Installed In 2011 f150 SC. Removed glove box and was able to mount it under dash above glove box. Connected To MTX thunder 500. Crystal clear sound and the remote turn on works great. Thank you Crutchfield.

Pros: Able to keep factory radio with sync and add a subwoofer. Crystal clear sound . Remote turn on. Very adjustable

Cons: None,

No bass in your new car? Get this!

GW from The Texas Panhandle on 2/26/2014

Crutchfield Customer Review (What's this?)

Wow, this thing is great. My '14 Silverado came with the Bose soundsystem upgrade. It sounded good, but needed more bass to sound "complete". The LC2I is the magic link that makes the addition of a subwoofer to a late-model vehicle so transparent and easy.

Pros: Ease of installation, fits just about anywhere, works as advertised, economical

Cons: vague connection information/no schematics

AudioControl LC2i

GarrisonD from Meridian, ID on 1/17/2014

Crutchfield Customer Review (What's this?)

This a great product if you are wanting to keep you original stereo, but still want to run a amp and sub. My subs are now louder and hit so much cleaner with being able to adjust the bass output.

Pros: Adjustability, options, ease of install, control

Cons: instructions could be a little better, but it wasn't hard to figure out

my opinion

melvinfg from ponce PR on 1/16/2014

Crutchfield Customer Review (What's this?)

good sound and easy to mount

Pros: change totally the sound of my car

Cons: the remote

AudioControl LC2i

rp from fl on 1/1/2014

Crutchfield Customer Review (What's this?)

great product if you want to keep your factor head unit


Cons: none

Great device

ToddH from Milwaukee, WI on 12/15/2013

Crutchfield Customer Review (What's this?)

I purchased the LC2i to addan additional subwoofer to my factory subs in a Chrysler 300. This device made it simple to just tap off one of the existing sub's speaker wiring for an input and gave me line level outputs to my Alpine amp for the new sub.The Great Turn On (GTO) circuit works well to provide a trigger for my added amp. All I had to do was run battery lines to the amp - a great benefit since finding a "switched" 12 volt signal on this car is about impossible with canbus control of just about everything! The Accu-bass circuitry works really well, too, providing me with just a small shelved boost in the lowest frequencies, since my factory radio already has pretty decent frequency response at all volume levels. I would highly recommend this unit for newer vehicles, especially if you have canbus controlled power everywhere.

Pros: small size, well thought out design, excellent performance, virtually silent.

Cons: documentation could be better, but still easy enough to figure out.


Joe from Philadelphia on 12/4/2013

Crutchfield Customer Review (What's this?)

Used it for bass output in my 2012 Expedition. Restored the bass perfectly. Easy hookup and adjustment.

Pros: Perfect on stock radio

Cons: None

AudioControl LC2i

Anonymous from VA on 11/21/2013

Crutchfield Customer Review (What's this?)

Great product, got this along with the AudioControl bass knob and it works great for my factory system in 2013 Accord



Big Difference!

rolfer85 from Oak Lawn, IL on 10/13/2013

Crutchfield Customer Review (What's this?)

This product was advised to me by a Crutchfield tech support member. I have an 06 MINI cooper S that I removed the Harman Kardon system from and replaced with an Arc Audio MINI 4 channel amp driving Inegral Audio 6.5" Infinity 2 ways up front and 2 6" JL 6W3v3's in the rear. I called Crutchfield to seek help from a lack of bass. I would have to dial my stock radio's bass setting all the way up and crank the volume in order to get any sort of noticeable bass output from the subs. This was also after I dialed up the output on the amplifier. The tech support recommended the LC2i which I have since installed and immediately it has made a major difference. The sound quality even from my front 2 ways are improved. Overall Rock, Alternative and Classical music all sound great with the LC2i knobs all at the center position. Rap music however is overpowering for the bass and I have to turn the bass knob down a couple clicks on the radio when playing bass. Also, the automatic turn-on feature worked great for the LC2i, however for whatever reason, installing this no longer kept the functionality of the automatic turn on for my amplifier. No big deal though, I used the remote on output from the LC2i and wired into the remote turn on input for my amplifier. Overall this has been an excellent product and probably the best <$100 upgrade I've made to my audio system yet.

Pros: Small package- easy to fit/hide Great sound output Simple set up, I actually like that it only allows 2 channel mode F&R Well balanced output for everything but Rap

Cons: Lack of 'troubleshooting' in the included 'instructions'- had to google what the red light meant (means on) Automatic turn on works for LC2i but killed the function for my amplifier Too much bass output for Rap music

AudioControl LC2i

Cody from OK on 10/11/2013

Crutchfield Customer Review (What's this?)

I instaled this in a factory equiped F150 FX4 crew cab, the amp is a Alpine MRP-500 hooked to a Rockford R2D2-10 seems to work as it should the bass seems to be restored, and the amp turn on lead is a great adder as well.

Pros: works as advertised and is easy to install with a factory radio

Cons: could be in a nicer looking housing

Great product!

Jay from 17331 on 7/26/2013

Crutchfield Customer Review (What's this?)

If you are satisfied with your factory headunit and want to add some amp/subwoofer excitement then this line converter is for you. Great quality and options to add amp/sub and(or) amp/midrange speaker setup. You won't be disappointed.



crazy clean sound!

Travis from Arizona on 7/18/2013

Crutchfield Customer Review (What's this?)

Got this to add a sub to my VW factory system and couldn't be happier! Even though its a 2 channel, it has a sub output in addition to a 2 channel output, so I may use it to drive a two channel amp and power my focals up front!

Pros: Easy to install, accubass is great, nice and small, great sound!

Cons: None!

Not bad

gman9966 from MA on 6/13/2013

Crutchfield Customer Review (What's this?)

I think its ok. I dont listen to RAP and the bass boost is probably more suited to Rap which is more boomy. I like rock and I would have prefered a more dry punchy bass you can feel. What I get instead is boomy rap sound. I have played my sub that I used in this sytem in other vehicles using aftermarket headunits and I know what it supposed to sound like. This definitely adds the bass back, but the accubass it too boomy for me to give it 5 stars. Many of you younger folks listening to todays music will be delighted. It gives you very loud very strong pounding bass...its just too boomy for me.

Pros: clean signal. Good for adding an amp to a stock head unit.

Cons: should have had better control to shape the bass to what you prefer. dry or boomy

Didn't work for me

MissileCrisis from las vegas on 6/10/2013

Crutchfield Customer Review (What's this?)

I must be the only guy thats had a problem with this LOC. I purchased it to based on the fact it had a 5 star rating from this site. And I'm always down to spend the money and get something thats right for the job. Long story short everything was hooked up "right" because redid it 3 times after the LOC wasn't working. The LOC has to be a defected product because I did my research and this LOC was acting in the manner that a defected product does. So waiting to get the same new one and will try this again people. Note that this review is based on the fact that I'm the rare person who has had problems with this LOC. This product seems legit and thats why I'm getting the same one. One more Note: the remote subwoofer adjuster didn't work when we plugged it in. Thought that was weird too :(



Crutchfield response on 6/11/2013 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

AudioControl LC2i

typo_joe from Conway, SC on 5/28/2013

Crutchfield Customer Review (What's this?)

Installed in a 2013 Dodge Ram. Connected from the uConnect 3.0 factory head unit. Then connected to a Kicker CX1200.1 amplifier. Works as described. The best line out converter that I've ever owned. No complaints.

Pros: High output voltage, High power handling, Lots of adjustably

Cons: None that I know of

LOC thats great to use for the price!

dt from Hampton VA on 5/20/2013

Crutchfield Customer Review (What's this?)

While installing my equipment on a budget this convertor did the trick. No ground loop issues. Installed in a 2013 Honda Accord EX with no issues. Just had to turn off the ANC's to have everything work good. Simple adjustibility. Great product, fast shipping, and free shipping!

Pros: Functionality. Simple to Use. Easy to install.

Cons: None

AudioControl LC2i

Tom R. from Upstate New York on 5/12/2013

Crutchfield Customer Review (What's this?)

After researching different options, I chose the LC2i to add a stealth subwoofer to a newly purchased VW Golf. I have done numerous installs in the past, but this one differred as it is a "grown-up" application, meant to be undetectable (except to the ears). This Audiocontrol device is oustanding. The quality and quantity of the signal provides clarity and low noise, and the GTO function works perfectly, and in fact provided a switched 12 volt supply for the amp that was installed with it, a Rockford Fosgate R500 1D. The setup instructions are "subtle," to put it nicely. However there is a wealth of information available, as well as great customer support with Audiocontrol.

Pros: High quality signal Tuning flexibility Excellent build quality

Cons: Vague instructions

Worth every penny!

Hags from Stafford, VA on 4/6/2013

Crutchfield Customer Review (What's this?)

I installed this on my 2012 Dodge Challenger and this is one amazing LOC. I tapped into my rear right speaker and it gives an amazing, strong signal to my 300watt Sony amp. The signal quality is just as good a RCA output on an aftermarket radio but this device allows me to keep my Bluetooth, steering wheel controls and Satellite radio on my stock system. Install is easy for a rookie like me, took about 2 hours but most of that time was spent making a nice clean setup. I used a line tap(from auto zone) from my fuse box to power the LC2i.

Pros: Great for amps that don't have adjustment knobs, signal is strong and just as good as an RCA, automatically turns on with your factory stereo

Cons: none

Mighty Cool Audio Tool

Pujo from Hessmer, Louisiana on 3/26/2013

Crutchfield Customer Review (What's this?)

I am a 40 yr old studio engineer. I was skeptical about getting this for my new Silverado. Cheap, yea but whatever. I just wanted to get some quality sound in my truck and get rid of the factory crap. I ordered this unit from Crutchfield with the hopes of it at least turning on my amp. But WOW I was freakin amazed... Blew me away.. Sound quality (and I know sound quality) this unit is the boss.



Audio control LC2i

Gabe from Newcastle, OK on 3/23/2013

Crutchfield Customer Review (What's this?)

Great control for adding a sub to my stock system I was leery about it just because I've had other line outs but this by far outperformed all of my expectations


Cons: I wish I could have added one more sub

AudioControl LC2i

Anonymous from Sumner, WA on 3/3/2013

Crutchfield Customer Review (What's this?)

Another great audio control product. I have been using their products since the 1990's. Still have a sub x-over working in my garage setup from back then.

Pros: Excellent quality and price. Build in the northwest- USA.

Cons: None.

LC2i Mustang Shaker 500

Ernest from New Mexico on 2/20/2013

Crutchfield Customer Review (What's this?)

Product helped get me more sub-woofer volume from the stock mustang system that I installed an amp and a 10" sub in the trunk. The speaker level inputs from the Shaker 500 weren't doing a good enough job supplying my amp with a good signal. Tried two different brand loc's, went pure line level and I even bought another amp trying to nail down this issue. Since adding the LC2i I can now turn down my amp gain and have plenty of room to spare. Didn't notice any depth improvements in the low frequency ranges and the GTO didn't work but the sub-woofer volume range is improved and the whole system sounds much richer as a result. For me it was worth the money, thank you Crutchfield.

Pros: Definitely improves signal strength to the amplifier inputs.

Cons: GTO feature didn't work with my application and wish the lows were a tad bit lower.

Great Product

tmag432 from Helena, MT on 2/15/2013

Crutchfield Customer Review (What's this?)

I hooked the AudioControl LC2i up to my stock stereo in my 2012 Subaru Impreza with no issues. The directions were straight forward and easy to understand. After I hooked up my amp and sub woofer, I plunged the battery back up and was anxious to test this product out. At first, the amp didn't kick on with the remote wire that was attached to the AudioControl LC2i, but I quickly figured out that my fuse was blown on my power wire that connected my amp. I replace the fuse and was extremely excited that everything was working and the base that came out of my sub-woofer was amazing!! I am very pleased with this product and everything worked like it should. I would recommend this product to anyone.

Pros: Easy to install, Great base sound from stock stereo, small and easy to hide

Cons: None that I can think of

2012 mustang shaker 500

Anonymous from Jacksonville, AR on 2/14/2013

Works great with my shaker 500, you just have to set the accubass Threshold to the lowest setting then you can turn the bass level up to what you desire. The AccuBass you can leave in the middle or turn it up to add deeper bass to your radio since the shaker 500 does not have roll off bass.

Pros: Best way to add bass to a factor radio Company support response time

Cons: no directions for dealing with radios that don't have roll off bass

LC2i excellent LOC

Marty from Johnston, South Carolina on 1/31/2013

Crutchfield Customer Review (What's this?)

Easy to use and install I have it pushing two soundstream amps and a pair of sundown audio 8s sounds great and easy adjustments. Installed in a 2011 ford f150 SCREW

Pros: Easy to install easy adjustments turns on amps with signal sensing and still can use factory deck

Cons: Really none except I can notice some bass feedback through my mids and highs at high volume

Highly recommended

Jason from Greensboro NC on 1/29/2013

Crutchfield Customer Review (What's this?)

I first purchased a vehicle specific sub enclose with a 10" sub and built in 300W amp with built in hi-level inputs. It was rather high end and rather expensive. I tapped into the rear speaker wires for the input. I was so disappointed with that setup I wound up returning it, output was just subpar and even with the gain all the way up I could not get the bass level high enough compared to the other speakers. Thinking it was the equipment I went back to what I knew, a JL Audio 10" sub and this time a 600W amp to drive it. The amp also had built in hi-level inputs and I hooked it up the same rear speaker inputs. I once again was not happy with the volume level and had to resort to using the bass boost on the amp to get the sub volume up and was not happy as the bass response was no longer linear. Being more familiar with the equipment I now knew the issue wasn't there, it simply had to be the level of signal going into the amp as compared to the volume going to the speakers. I needed a stronger, louder input going into the amp. I picked up an LC2i and the difference is amazing. I went from being disappointed with the amp gain at 5/6 and the bass boost at 6db to now the sub hits very hard with the amp gain at 1/2 and the bass boost at 0db. (I'm not even using the AccuBass) I had no idea an external converter could make such a difference but the ability to control the signal level going into the amp really helped to get the full potential out of my amp and sub

Pros: Sound quality and additional volume

Cons: None really. It's another device to install but it's small.


Anonymous from fort worth texas on 1/22/2013

Crutchfield Customer Review (What's this?)

I installed this product plus the optional bass remote on my Daughters new 2013 ford focus with my ford touch/sony hd/navigation radio with factory amp and factory sub in the trunk. I simply ran a power wire from the battery to the trunk where the alpine mrp500 was placed under the trunk mat. I used the the wires going into the factory sub for the input of the lci. No turn on wire required. Used the 12 volt off the alpine amp to power the lci. Boom turned on all the system and the two alpine twelves sound great. I did not even adjust the lci just used it how it came and turned the gain down to half on the amp which is powering two alpine type s shallow mounts. The bass knob on the dash made it great to turn it up when needed which is does need to be at all. Going to buy one for my new ford f150

Pros: Easy install and way to add amp to factory system

Cons: none

Great Product

b386 from Michigan on 1/16/2013

Crutchfield Customer Review (What's this?)

I recently added a subwoofer and amplifiers to my factory receiver and have tried many line output converters including the pac models, but was less than impressed with the sound quality of these converters. I recently decided to try the Audiocontrol LC2i converter and was amazed at the improved sound quality! The extra dough for the audiocontrol LC2i is well worth it !



2011 F-150 Sony Factory Sub Replacement

Steve from NC on 12/31/2012

Crutchfield Customer Review (What's this?)

Like many others, I don't normally write reviews on products purchased online. However, I rely heavily on these, so I thought it only fair that I write one that might help someone else. I purchased this to install in my F-150 Platinum in order to replace the Sony factory subwoofer and maintain the factory system. I used a JL 500/1 amp and 10" JL sub with an enclosure I built myself to place under the rear seat. I had already set up the amp installation with a local installer, but after deciding to purchase the LC2i (because the installer said he would need to use some sort of LOC) I thought maybe I could try this myself. 20 years ago I used to install car audio systems as a hobby, but a lot has changed with factory audio and the wiring has gotten a lot more complex. After researching some online forums I found that running the power from the battery to where I had the amp and LC2i mounted would be pretty easy. It wasn't until after I looked a little closer at the LC2i that I noticed it had the GTO feature. It took about an hour to run the power from the battery and get everything wired up (used both sets of DVC factory sub line inputs for signal), but once it was wired the LC2i worked like a champ. Using the GTO feature I avoided having to find a remote wire for the amp, and the LC2i picked up my incoming audio signal immediately. While I haven't finished tuning it, I can tell you that this is a MUST HAVE if you are installing a mono amp to replace your factory sub.

Pros: Ease of installation and the GTO feature in place of a remote turn-on wire.

Cons: None for me...this thing works exactly as designed

Small than it looks

Matthew from Santee, CA on 12/22/2012

Crutchfield Customer Review (What's this?)

Ya know, my pet peeve is trying to hide these factory add on pieces just because you already have to find a place for the amp and wiring, but man this thing is tiny, it fit behind my wife's focus factory cd player no problem. Used wire taps (I know I know not the wisest choice, but they are holding strong) and the unit turns right on with the car. I went ahead and used the audio sensing feature but if it quits working I will tap into the switched 12v for the remote, but at the moment not necessary. The 9V max pre-outs are awesome, puts a super strong signal to your amp, I bared had to use the gain/trim. Great overall build and product, seems the company really stands behind their products. Didn't find any use for the accubass feature, I left all the dials in the middle and it worked out just fine, figured I would use the amp as my gain/trim....worked out just fine.

Pros: Perfect for factory stereos, strong pre-outs

Cons: None that I know far

A must have for factory add-on

Anonymous from Granger,IN 46530 on 12/5/2012

Crutchfield Customer Review (What's this?)

Spend the extra money and go with the LC2i. The audiophile quality is amazing! User friendly and easy to install.

Pros: Easy to install and don't need to run a remote wire.

Cons: None. Another great product from audiocontrol.

Awesome Sound

Dave from NJ on 11/8/2012

This thing is awesome, read a prior review by someone with a WRX and got nervous because it wasn't a good review, but I think that user installed it wrong. In the wrx you need to tap the front speakers as the EQ pushes everything to the fronts. The sound vs using the high level inputs on a kenwood amp is night and day. Sounds like it should sound. Love the adjustability and it just sounds insane! Get this now.



Works perfectly

Johann from Elk Grove, CA on 11/3/2012

Crutchfield Customer Review (What's this?)

The Audio Control LC2i works perfectly as advertised. My Mustang w/ Shaker 500 sounded good, but it lacked deeper bass. There are no Line-Outs on the head unit. The LC2i took a good audio signal from the door subwoofer outs and gave a strong signal to my new subwoofer amp in the trunk. The remote control for it works well too and it is easy to mount anywhere. Because the LC2i only draws 150mA, tapping for power was simple. A few caveats... the settings are a bit tricky to get right, but work well once you figure it out. The youtube video helps. A more detailed technical instruction sheet would have improved things. Lastly, the compact size made it a breeze for mounting. This LOC made adding an amplifier to my Shaker 500 a breeze and I would wholeheartedly recommend it to anyone wanting to improve their factory sound. A+ Product.

Pros: Perfect design, flexible audio settings, compact, remote control accessory works well too. Not too expensive.

Cons: Paltry instructions.

Audio Control LC2i - 2007 Range Rover

Ben L from Ann Arbor, MI on 11/2/2012

Crutchfield Customer Review (What's this?)

I bought this unit to be able to add an aftermarket amp and sub in my 2007 Range Rover (LM 322) with factory stereo/nav/logic 7 surround sound. The car came with a weak factory sub/amp so I removed the stock sub and tapped into the wiring from the stock amp, after the stock sub. I was told to keep the stock amp because of the way the Range Rover electronics work. So I took the wires from the stock sub and wired them to the LC2i +/- line inputs. What is nice about the LC2i is that it has Remote In, Remote Out, and a 12V+ terminals on it to be able to turn on/off the amp when turning on/off the car. You don't need a separate remote turn on. So I wired the 12V+ to a constant power source, and the Remote Out to my aftermarket amp, and both the LC2i and aftermarket amp only turn on when the car is is switched on. Since I don't have one of those factory radios that plateaus the bass levels as the volume increases, I just adjust the LC2i's settings accordingly. I turned the Bass Threshold knob all the way up (clockwise), and then the AccuBASS knob + Main level knob + Bass level knob all the way down (counter-clockwise). However, I had to search online forums and what not for proper adjustment settings because the LC2i didn't come with any detailed instructions based on the kind of stereo you had. It just explains what the GTO and AccuBASS are.

Pros: Remote Turn-On Two Sets of Line-Outs for adding up to two amps Level Adjustments Size

Cons: No detailed installation or sound adjustment instructions

Best thing since sliced bread!

Scott A from Paducah, KY on 10/30/2012

Crutchfield Customer Review (What's this?)

I'm 38, and back when I was younger, I used to install alot of stereos for friends, etc. Things have come along way since then, and this product is definately one of the best things I've seen! Its simple to install, and the adjustments are very straight forward. Its really compact, and I love the fact that it automatically turns on when it senses a signal from the speakers inputs. It also has a remote out connection, so you can hook it to your amp, and it will turn the amp on and off automatically too when you turn your radio on and off. It makes putting amps, etc so simple when running along with factory radios, and speakers. I highly recommend this to anyone looking to upgrade their factory system.

Pros: compact design, auto on, off, and the ability to run a remote wire from it to your amp, and turn it on and off automatically too! The sound reproduction is excellent also.

Cons: NONE

Audio Contro LCi

V from Phila on 10/29/2012

Crutchfield Customer Review (What's this?)

Anything Audio Control is great. No problem with item. Works great. Need the remote for customization.

Pros: Smooooth

Cons: none

Works Perfectly!

Todd M from Jackson, MI on 10/17/2012

Crutchfield Customer Review (What's this?)

Awesome product and it works as advertised in my 2011 Chevrolet Malibu. Here's a quick run down of how I installed this to help everyone out there. The really nice thing about this product is that you only need to run one wire from the front of the car to the rear and that is the power cable for the amp. Then I grounded the amp to the tailight bolt. So once that was done I tapped into the rear speaker wires from each speaker + and -. Ran those to the LC2i. Then I ran a small power and ground from the amp to the LC2i. Hooked up the RCA cables from the amp to the LC2i and speaker wires to the sub and that was it! The really nice thing about this product is that there is no need for the remote wire, as the stereo signal to the rear speakers does this for you. Tip- adjust amp to lowest level then go from there tuning the LC2i and the amp to find the best sound. I recommend this product as it did everything that it advertised.

Pros: Easy install No remote wire needed Made in USA

Cons: Instructions could be better

Simply Fantastic

thisGirlhasBass from Washington State on 9/26/2012

Crutchfield Customer Review (What's this?)

This thing works! I didn't want to buy a new head unit for my '08 Maxima because I have OEM Nav and that would leave me with a big blank screen and no display for many things. I also wanted my car to appear stock to anyone with thoughts of breaking in. My car came with Bose speakers, so we just added this LC2i, 0 gauge wiring, a JL fuse block, a stinger distribution block, 2 12" JL Audio W3's and a JL 500/1 amp to run them. I was skeptical, but am now very pleasantly surprised. Highs are loud and clear and obviously the bass pounds. Perfect set up for me!

Pros: Everything

Cons: Nothiny

Welcome to the 21st century

Jim from Erie, Pennsylvania on 9/22/2012

Crutchfield Customer Review (What's this?)

Old school equipment just didn't work like this. I installed this in a lincoln continental and pared it with a bridged kenwood kac-1502s amp with kenwood's 12 inch subwoofer in a tube and bam, blow your hat off bass, from a factory stereo.

Pros: It just works very well providing installation is proper.

Cons: None that I can think of.

Fixed 2011 Dodge Ram with Factory Radio

JasonK from Olathe, KS on 9/21/2012

Crutchfield Customer Review (What's this?)

Had an issue of a severe lack of bass from a subwoofer I installed to my factroy system in my 2011 Dodge Ram 1500. The lack of bass was present when listening to Sirius Radio or mp3's. The cd player was ok. This little box fixed it! The bass is loud and proud. The rep I called at Crutchfield didn't think the LC2i would cure my problem. Let it be known, it cured it in a big way!! I would suggest this item for anyone needing a line out converter for integrating anything into a factory system!

Pros: Awesome product that really works. Well worth the money!


Doesn't turn on, doesn't sound good once turned on

Steve H from Nashua, NH on 9/7/2012

Crutchfield Customer Review (What's this?)

Ugh, where do I begin. I reviewed this product on multiple sites including this one to find out it is the best solution out there for using your OEM head unit with an aftermarket amplifier. Well, I can't say I agree. This is going to be one of those one off reviews where people gloss over it because the majority of reviews are heaping praise on the product and people won't take it with a grain of salt but humor me and listen. I have a 2011 Subaru WRX and I'm keeping the factory head unit so I don't need to buy an aftermarket head unit, bluetooth and steering wheel adapter. Anywho, I tapped into the Right Rear speaker with a soldered connection for optimum connection and ran the wire to the LC2i. Ran the power cables from my capacitor to the unit, ran the remote wire from the unit to the amp (the amp is properly connected to the cap also), turned the car with the radio on, AANNDD nothing. The LC2i just sat there and slept. I played around with the jumper to make sure it was in the proper auto detect position, still nothing. I checked all the wiring again and again and still nothing. I resorted to running the remote wire from the accessory wire from behind the factory stereo to the LC2i and that turn the thing on, FINALLY. Phew. But the quality of the audio signal is less than ideal. The knobs to control the volume and quality didn't do anything and the overall volume was inconsistent, kept cutting out. Needless to say, I'm getting better quality going directly to the amp.

Pros: The concept is great. Small and lightweight

Cons: Everything. The auto turn on didn't work. Once I got it turned on, the volume was inconsistent and kept cutting out. Power terminals too close to each other which leads to risk in the wires crossing and arcing. The signal it processed was causing the sub to only hit and not be smooth.


Brian from Malone, NY on 6/8/2012

Crutchfield Customer Review (What's this?)

I just installed it in my 2012 Mustang and it sounds AMAZING. I have never used a stock deck with my systems, but with this LC2i I will keep it in my Stang! Looks factory and sounds GREAT. Plus with the GTO function, you don't have to run a remote turn-on wire.

Pros: Simple install, LOVE the GTO function!


This is many help!

Jack from Pittsburgh on 6/3/2012

Crutchfield Customer Review (What's this?)

This device was many great! I very much enjoy the bass now. It provide many sub levels that were not able to be heard. My bass was very missing on certain frequencies and I could only listen to street bass and metal-house, but now I can listen to hip hop! Make sure you turn down your bass boost on amp the lc2i and the amp will fight the battle of the bass.

Pros: Easy to install . Accubass is the chronic I got a new girlfriend because she loves to booty shake to my bass

Cons: Didnt come with a second one that I could give to my installer as payment for his many great hours of work put into my car

Fantastic product!

Dan from Apple Valley, MN on 4/30/2012

Crutchfield Customer Review (What's this?)

This product works very well. I have an MK6 GTI with the 300W DynAudio stereo system. I added a sub and quickly discovered the OEM stereo rolled off the bass. I was able to tune the LC2i perfectly using a SPL meter and test tones, and I'm thrilled with how well it worked. No more constantly adjusting my sub volume, and it hits cleaner, harder, and deeper! Great product!

Pros: Corrects bass defeat in OEM stereo systems for a great price.

Cons: Not the best setup instructions, but was able to figure it out.

Works as advertised

Mike from Arlington, VA on 4/29/2012

Crutchfield Customer Review (What's this?)

It takes speaker level inputs and converts it to something useful for my amp. I'm using this in my Audi A6 w/B&O to add a large subwoofer to the system. The auto-on feature upon detection of signal from speakers works well on the standard speaker lines but it doesn't for *my* install which is off the subwoofer line. Not a big deal, just needed to hook up a 12v source to turn it on. I'm pleased with the product.

Pros: -Works well -Handles the 'high' power from the premium system -Tunable bass compensation (nice touch for those who need it)

Cons: The remote bass control really should have been included in the kit rather than a separate add-on. It's a telephone cable and (probably) a variable resistor. Can't dock a star for this though as it is not a part of the package.


Jose from Phoenix, AZ on 4/26/2012

Crutchfield Customer Review (What's this?)

Definitely worth the price. Works flawless in my 2012 Chevy Malibu. I love the way the stock stereo looks, but wanted that extra bass from a subwoofer setup. Couldnt be happier with the outcome..

Pros: Well built, sturdy

Cons: none as of yet

Absolutely Outstanding!

Wade from Calgary, AB on 4/23/2012

Crutchfield Customer Review (What's this?)

After being frustrated with numerous $20-$30 Line Output Converters, I finally coughed up the money for the AC LC2i. The price is more than reasonable for what the unit delivers. I LOVE that I can keep my factory head unit, steering wheel controls, nav, etc. The signal this thing sends to the amp is crystal clear. I used mine for a simple amp+sub install, and it sounds great! Stop wasting time with cheap LOC's. This thing is perfect.

Pros: Small size, easy installation, works exactly as advertised.

Cons: Nothing noted!

AudioControl LC2i

ev from cairo, ny on 4/16/2012

Crutchfield Customer Review (What's this?)

I attempted to use this for the low level output. While it does slightly enhance the bass, not enough to justify the cost. Perhaps it would do better with the mid-range through high end. I will be returning this.

Pros: ease of set up

Cons: did not do what was expected

Awesome!!! Just awesome!!!

Goyo from APO on 4/16/2012

Crutchfield Customer Review (What's this?)

The LC2i is probably the best investment I have made for my car. I have a 2003 Mercedes E320 and didnt want to remove the APS 50 radio that came with the car since it has navigation and I like the appareance. What I did is remove the original subwoofer in the rear deck of the car and hook up the LC2i from those cables and man does it do a good job. Everybody said that I couldnt install an after market radio because Mercedes uses fiber optic. Naaaahhh!!! With this little guy in my car, my car is loud!!! I also install dynamat in the license plate and there is absolutely no rattle just solid bass. I cant recommend the Audio control LC2i enough to anybody that wants to add amps to their car without removing the OEM radio. If youre installing an aftermarket amp in your mercedes completely remove the OEM sub to let the air go into the cabin and youre good to go also since the OEM sub is a dual voice coil you can use the second pair of cable to add a second amp to connect your door speaker if you want to change them. Awesome just awesome!!!

Pros: easy install great voltage ouput for your sub accubass module for any OEM radio

Cons: nothing at all!!

Works Great!

Chris C from NH on 4/15/2012

Crutchfield Customer Review (What's this?)

This worked great, sounds is great, easy to install!

Pros: Price, sound quality, ease of install

Cons: none


jimmym1981 from Chicago, IL on 4/8/2012

Crutchfield Customer Review (What's this?)

I hardly ever leave reviews on products, but I felt like I have to for this one. I have been a big car stereo enthusiast forever and always add subs to my cars. Normally I do aftermarket equipment but I like my factor radio and wanted to add some bass to my '12 VW CC. I originally purchased a top of the line PAC converter hoping to get some good sound from my radio. After installation and tuning, it sounded decent, but very muddy and distorted when I turned it up. I delt with it for a while until I heard my buddy's aftermarket stereo and subs he just installed. I knew that there was some way to get my factory stereo to sound like his. I did a lot of research and ran across AudioControl's LC2i. With all the positive reviews and low price I decided to give it a shot. I ripped out my PAC with a smile on my face hoping to improve my sound. After I ran all my wires, hooked up the LC2i,I turned on the receiver and the light on the LC2i turned on. As soon as that first bass note came out of my subs, a huge smile appeared on my face. I couldn't believe how incredible it sounded before I even tuned it. I followed the instructions included with the LOC, and the sound that is coming from my car is unbelievable. Anyone who is installing an aftermarket amp and sub with a factory radio, don't waste your money on anything else to get an RCA out. BUY THIS product and you will not regret it. Words cant express how awesome it works. Great job AudioControl!

Pros: Best sound quality I have ever had with a factory radio Price is great for what you get American made Installation was simple Still baffled how good this product is!

Cons: Not a single thing

It does what it says.

SS Teacher from Plant City Fl on 3/16/2012

Crutchfield Customer Review (What's this?)

Sometimes the highest praise does what it says it will do. My JL 12W0 was not gaining volume like the front speakers and this wonderful machine gave me the bass I knew I should be getting from my Challenger. They shipped it without plugs and that annoyed me so I called Crutchfield and they had plugs in the mail the next morning. I emailed Audio Control and a real live human being called to apologize. I might have preferred it if no mistakes were made, but I got great customer service from both companies. I look forward to adding an Audio Control EQ over the summer.

Pros: It gave my amp a great signal for the highs and fixed the factory limiting low signals.


Absolutely fantastic!

Steelersfan from MS on 2/24/2012

Crutchfield Customer Review (What's this?)

An advisor told me I'd need one of these if I wanted to keep my factory radio in my car. So I took it to the audio dealer and they hooked it up. They mounted it right behind my backseat, very convenient and accessible. Didn't even need to place it behind the stereo. When I crank this bad baby up, my subs just let loose! Another great product from Crutchfield!



AudioControl LC2i

kevin from jacksonville,fl on 2/5/2012

Crutchfield Customer Review (What's this?)

Just what I was looking for! Adding some bass to the factory head unit. Lovin it



AudioControl LC2i

Anonymous from phoenix, az on 1/25/2012

Crutchfield Customer Review (What's this?)

outstanding product



Road shaker!

Steve H. from Saxton, PA on 1/23/2012

Crutchfield Customer Review (What's this?)

Read all other reviews and was a little skeptical, but with 5 stars, they cant all be wrong. Simple to hook up, just tapped off of bass wires on the rear deck speakers, ran power to amp feed and mounted under rear deck, done! Wow, what a difference! Like other reviewer, had to cut bass setting on factory deck. My bass would drop out at number 15 on the head unit,adjusted the threshold at number 15. Difference of nite and day! Bass was still a little strong, so I fine tuned the accu-bass and gain controll. I was going to replace the head,but was debating cause I would lose control panel display. But Now I have all the bass I need and more! Thanks again Crutchfield for another great product.



AudioControl LC2i

Tony G from Vineland,NJ on 1/23/2012

Crutchfield Customer Review (What's this?)

works like a champ



Way to go USA!

JonM from Denver Colorado on 12/1/2011

Crutchfield Customer Review (What's this?)

I put this in my 2010 Toyota Tundra. The only problem I had was that I got my left channel out of phase (swapped the high level inputs plus and minus) oops. The subwoofer was muddled and wappy. After a quick call to tech support we got it fixed and BOOM! Tight,crisp, deep bass from a factory stereo. (I am running a 13 inch subwoofer with a 350W RMS amp) What a difference. The bass adjustments are extremely effective and the entire unit seems to do its job very well. The amp GTO signal sensing turn on unit works flawlessly as well. The LC2i is an excellent product.

Pros: Excellent product that will put the Bump into your factory system.



Derick from Dallas, TX on 11/11/2011

Crutchfield Customer Review (What's this?)

I hooked this up to my '09 Challeneger SRT. I installed the JL W3 and sent it back because I thought it was the speaker. I then order the Rockford Fosgate P2 sub, SO ported box, and and this mean machine to go with it. It is the difference between night and day. I promise you will WANT this if you're installing an amp to your factory stereo. GREAT PRODUCT!!!

Pros: N/A

Cons: N/A


Ryan from Vancouver, Wa on 11/3/2011

Crutchfield Customer Review (What's this?)

I bought the LC2i to replace another bass restoration device while adding a full system to my car with the OEM head unit. The LC2i adds back all the bass that the OEM head unit strips out, gives a nice high voltage output to run to my amps and provides a remote turn on line by sensing power to the speaker-level inputs. The LC2i is very clean, no audible distortion added to the signal, unlike the device it replaced... I cant say enough good things about this device. The noise floor is finally low enough that there is dead-silence between tracks. Installation was a breeze, power ground, speaker signal inputs and RCA and remote turn on outputs. Setup once installed took 5, maybe 10 minutes at the most and half of that time was playing with the device to see what it could do. I was skeptical at first, as I suspect most people will be, but I am living/driving proof that this device is everything its advertised to be, and I couldnt be happier. Its worth every penny.

Pros: Quick and easy setup powerful RCA outputs very clean (no noise added inline) small footprint

Cons: Nothing

Magic Box!

GregT from New Jersey on 10/6/2011

Crutchfield Customer Review (What's this?)

To all the folks who say buy the cheapest line output converter I say fooyee... I bought myself an AudioControl LC2i as seen in the link below. This thing brought my sub to life! Before I had a cheap LOC and my sub made strange noises and sounded terrible... now, it could have been a bad LOC, but this thing is awesome! I am not a sales person, nor am I affiliated with Crutchfield... just someone who tried a product and wanted to share how awesome my experience has been! I got mine from the scratch and dent section and it looks and works like new... anyway I hope this helps someone




Bryan from Maryland on 9/25/2011

Crutchfield Customer Review (What's this?)

This is by far the best interface to use if you are just adding a subwoofer to your factory stereo. The stereo in our 2011 VW was already very nice sounding, just needed some sub bass. Added this in addition to a JL amp and Stealthbox and the sound is unbelievable. The bass doesn't roll off like a standard line interface would at high volumes. A++++




Anthony from Pittsburgh, pa on 9/19/2011

This L.O.C. is great, i was previously using another loc, in my 2011 forester, and the stereo i built didnt sound much better than the stock stereo in my subaru. i had the loc ran into and equalizer, and still the bass was muddled and flabby, the highs were inconsistend and the mids were just awful, so i bouth the lc2i and what i difference it made. i took this stereo out of the last car i had, and put it in my subaru, the only difference is that i am not using an aftermarket head unit, and this loc sounds better than the exact same system with the aftermaket head unit. The only reason i didnt give this 5 starts is that i am only using the main outputs to run into my equalizer, and you loose some of the bass control with the unit when you do that. but if you are not using an equalizer, this things is perfect, its made in the usa, and its only this much, you cant beat that.



Finally Satisfied!

Gumbo King from Conroe, TX on 9/1/2011

Crutchfield Customer Review (What's this?)

Ok, I went through three Maxxsonics MX-1's. After that, I was temporarily using a ten dollar LOC converter. Then, I decided to try a name brand LOC. It was the same result as the ten dollar one. So, next I decided to read up on the LC2i and thought that I would give it a try. Immediately it made a difference, but I had a little trouble tuning it. The Accubass function is a little challenging without a test speaker or an osscillascope. So I brought it to a local audio shop to have them tune it. Wow! My sub hits so hard and so clean now. Thank you Audio Control, Crutchfield, and Lakeside Audio.



GREAT OEM integration device!

RJ from Houston,Tx on 8/21/2011

Crutchfield Customer Review (What's this?)

Bought this product because my new JL 500/1v2 amp could not sense the high speaker level inputs to turn the amp on, but it worked on my other JL 250/1 amp. I have an 08 Chevy Avalanche with Bose and wanted to keep the factory look so I spliced into the sub speaker level outputs of the factory amp and ran them to my JL 250/1 amp. Worked flawlessly, but after upgrading to the 500/1v2 it would not turn the amp on using the signal sensing.(factory Bose amp only sends lows to sub...both manuals state that the high inputs need to be full range in order for signal sensing to work. Not sure why it worked on the 250/1 and not the 500/1) So, I needed to find a remote 12v source but came across this product with it's high level inputs , high voltage outputs, signal sensing with remote turn on and decided to give it a try. My only concern was that this product was not going to sense the sub inputs and not power up without a remote in. Well I hooked it up to my factory sub outputs and problem SOLVED! It powered up the unit which also sent power to the remote output (GTO) to power my JL and it works perfectly. All I need to do is fine tune the LC2i and my amp. Very happy, YEAH BOY!



This is the one to get

PeterLemonjello from Orlando on 7/17/2011

Crutchfield Customer Review (What's this?)

I've never reviewed anything on the internet, but I wanted to say that I have recent experience w/ both the Scosche LOC80 and this product. I first bought the Scosche because it was $20 and I didn't think there would be a huge difference. I had it professionally installed (along with some other gear) and my system sounded like absolute hot garbage. There was only muddled flat bass. Nothing that punched me in the back or rattled my rear view mirror. I was adding a JL Audio 10" sub and a 2 channel 250-watt amp. I knew the potential for the system to be much better. After listening to my system for a few months (all the while trying to figure out what I could do to make it sound better) I researched this product and finally broke down and bought it. I just finished installation of it (fyi, it does need it's own constant power cable, ground and lead...which i borrowed from the amp connections) and it sounds AWESOME. I used to have my stock head unit on +5 on the bass (out of 6) with the Scoshe and now I have it set to 0 and it absolutely thumps. I'm going to tweak it a bit more but I didn't want to disturb my neighbors in our quiet neighborhood. Trust this post and remember that sometimes you do get what you pay for. $20 vs this price is a lot, but I feel is completely worth it.



Amazing product.

Nic from Plantation, FL on 6/9/2011

Crutchfield Customer Review (What's this?)

Heard about this product on Hyundai Forums and purchased one for my Sonata GLS. I installed the sub and amp from my previous vehicle and expected a similar sound. I was astounded to find out that I had not even come close to the full potential of my sub and amplifier until I HAD to get a line output converter. Do your research on line output converters and you'll find some from 15 dollars to 500. The LC2i is super economical for the results. It is worth every penny. If you have a sub and amp direct plugged into RCA outputs from your head unit, UNPLUG IT, buy the LC2i, and run the audio to your sub with this instead. I still cannot believe the results.



OEM Intergration at its finest!

RayB from Jackson, TN on 2/18/2011

Crutchfield Customer Review (What's this?)

When looking at putting subs in my 2006 Chevy Impala LT, I wanted to go with an aftermarket cd player. However, GM vehicles have these weird harnesses and not to mention that I have steering wheel controls too. Therefore, I researched line out converters. I chose Crutchfield because the price was the best :) I bought this one and was highly skeptical about the whole factory radio and subs. I must say that I have been pleasantly surprised by this product. It sounds great in my car alongside my 2 12" Memphis PR subs and 1000 watt amp. I also bought a wired remote (from eBay) for tweaking when a mp3 has too much or not enough bass for my liking. Installation seemed simple... I didn't install it but I observed the process. If you are going to keep your aftermarket radio, I would definitely recommend this product. You won't be disappointed.




David A. from Illinois on 12/3/2010

Crutchfield Customer Review (What's this?)

I have held off on a system upgrade in my 2011 Mustang GT since it was purchased four months ago. I decided to make the move once I read reviews on the AC LC2i ALOC. I received it from Crutchfield in two days and had wired up the amp kit in advance so it was literally plug and play. Two Boston G3 12" subs in a custom enclosure and an Alpine digital amp, a 1.2 farad cap, and this little guy pushing super clean signal and it is amazing. I am using the pass through channel to feed a second digital Alpine powering a set of 1" tweeters mounted in the sail panel. What an easy install and the end product is phenomenal!!! The Shaker 500 has come alive and it sounds like thousands of $$$ has been poured into this system. The Accubase feature is flawless, the incorporated line driver is maximizing my amp's potential, and the augment of much need bass and high-end support has turned my system into an audiophile's dream! The Crutchfield team was awesome - as always!




Hands-on research

Product Research



Overview: The AudioControl LC2i is an active, high-voltage OEM line converter. This compact, two-channel processor with active input circuitry, accepts speaker-level signals of up to 400-watts per channel from factory-installed source units or amplifiers. It then converts the speaker-level signals to high-quality pre-amp signals that can then be directed to after market processors and/or amplifiers. You no longer have to compromise when performing basic amplifier additions to factory installed audio systems. You can enjoy maximum sound quality while maintaining the use of your factory volume and steering wheel controls.

Compact Chassis Design: The AudioControl LC2i active, high-voltage OEM line converter features a compact chassis for an unobtrusive installation.

Two Channel Speaker-Level Input: The AudioControl LC2i features two channels of active speaker-level inputs that accept up to 400-watt signals. The two-channel line-output converter features four removable flat-head set-screw terminals for quick connection.

9.5V Preamp Outputs: The AudioControl LC2i is equipped with 9.5-volt preamp outputs w/ level matching controls. It features a pair of Main preamp outputs (for full-range amplifiers) and a pair of Bass preamp outputs (for subwoofer amplifiers).

Active Circuitry: The active circuitry used in the LC2i provides dramatically better sound quality and does not compromise the bass response.

AccuBass: The AudioControl LC2i features AccuBass processing for correction of bass roll-off. AccuBass processing automatically corrects for the bass roll-off that is common with many factory installed audio systems. AccuBass Bass Compensation works at any volume level.

Threshold & Level Controls: Simple "Threshold" and "Level" controls allow users to optimize the bass response to match their speaker system.

GTO (Great Turn On): The AudioControl LC2i utilizes selectable GTO auto sensing turn-on circuitry so no remote wire is needed. The LC2i turns on using the unit's speaker-level inputs. It also provides a 12-volt trigger output to turn on your amplifier.

Remote Level Control: The AudioControl LC2i is equipped with a Bass Control Input (RJ-11) for optional remote bass level control (sold separately).

Mounting: The LC2i features integrated mounting flanges to mount the unit under a seat, in the trunk, or under the dash. No mounting hardware is supplied.

Power Connections: The AudioControl LC2i requires a hardwired power and ground connection to your vehicle's 12-volt electrical system. The line-output converter features removable flat-head set-screw terminals for simple connection.


Maximum Speaker Level Input: 400 watts per channel @ 4 ohms

Maximum Preamp Output: 9.5Vrms/13V peak

Optional Dash Level Control Remote: +0dB/-19dB

Frequency Response: 10Hz-100kHz; +/-1dB

THD: 0.01%

Signal-to-Noise Ratio: >110dB

Input Impedance: 20k ohms

Output Impedance: 150 ohms

Power Draw: 150 mA

Recommended Fuse Rating: 1 Amp

Dimensions: 6.5" (w) x 1.5" (h) x 3.25" (d)

Weight: 1 lb

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Audio control has made a quality product for many years. I like having the best. [ R  Mar 04, 2016 ]
Works amazing [ CASEY  Feb 28, 2016 ]
david on crutchfield support highly reccomended this so i wont have to remove my stock in dash reciever unit David's Bio: [ michael  Feb 26, 2016 ]
It allowed me to add an amplifier to my stock head unit. Works as it should. [ Courtney  Feb 08, 2016 ]
I like to keep all of the factory functions but want to add some bass to the system. [ ABNER  Jan 30, 2016 ]
I chose the LC2i based on the fact that it is a simple way to add an amplifier for a subwoofer. [ Chance  Dec 26, 2015 ]
To hook to my factory car stereo so i can add a amp for my sub [ Daniel  Dec 03, 2015 ]

27 questions already asked

The adjustments control the 2XS signal output to your power amplifiers. The circuitry provides output level control to drive any power amplifier wirh up to 9.5 volts of input signal, which helps achieve maximun signal to noise ratio. Please note: the output of the 2XS is proportional to the input it receives. At aproximatly 5.6v the 2XS the should produce its rated 9.5v of output. Any less input voltage and output will dcrease. Output status leds Power: indicates when the 2XS is turned on, 3 volts: light up when there is 3 volts RMS present at the 2XS output jacks.this is more than enough to drive must amplifiers, so check your amplfier's manual to make sure the amp can handle it. 1 volt: displays when there is 1 volt RMS present at the 2XS output jacks. [ ISRAEL  May 30, 2016 ]
Yes, it needs remote power. I used 12 gauge but you can use 10 ga. All its really doing is converting the speaker wire cable into rca jack cable. [ Derek  Jan 04, 2016 ]
You can hook the remote wire to power antenna on your stereo or two a terminal in your fuse box that only comes on when your vehicle key is in the accessory or on position. You can use as small as 18 gauge wire, I used 14 gauge since that was what I had available. The other power wire needs to be attached using 14 or 12 gauge wire. This is not really an amplifier so you do not need anything larger. If you have to, You can just use one power wire that comes on in the accessory position and use a jumper wire from that power to the remote power. [ Jonathan  Jan 04, 2016 ]
You can if you bridge your 4 channel amp to 2 channel and wire your speaker in parallel to bring them down to 2ohms if they are 4ohms. Remember that you won't have front rear level control just right left. [ jean  Dec 28, 2015 ]
You will lose fader control from front to rear speakers. You only need to get signal from either front or rear speakers, not both. Get the 6 channel, you will have more flexability and be ready for your sub. [ dan  Dec 28, 2015 ]
Basically in my 2009 ToyCam I took the two rear speaker paired wires and connect them to the LC2i inputs, to do this - leave the factory rear speakers connected and splice into them - determine the positive and native leads for each left and right rear speakers by researching your specific vehicle. Connect to the positive line of the left rear using similar type wire (matching gauge [thickness] and strand type) into the input block of the LC2i, repeat the process for the negative feed. Use electrical tape or shrink tubing to cover all exposed bare wires that have lost their insulation or plastic coating. Repeat the process for the right speaker feeds. I have one sub with an amp, which has an RCA type connector feeding the AMP input. Interesting for my SUB install l used a home audio JBL sub which no longer worked because the 110v internal AMP burned out, I determined that it had a 75 max input, so i purchased a JVC 75 watt Amp with a bridged output capability, allowing it to be a mono output, from Cruchfield. I removed the 110v AMP and externally mounted the JVC Amp on the out side of the sub and wired the sub inputs to the mono output on the JVC AMP then connected the JVC mono input line by the RCA patch cord to the output of the LC2i - sounds great!! - hope this helps [ DOUG  Dec 08, 2015 ]
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy  Sep 18, 2015 ]  Staff
For 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. [ Krissy  Aug 12, 2015 ]  Staff
No, this does not have a subsonic filter or any crossove built in. The accubass feature is mainly to compensate for the factory systems that cut the lower bass at higher sound levels. This is a high quality piece, I've used it in two installs so far. I would turn off the accubass off, then start tuning your amp after that. [ Juan  Jul 07, 2015 ]
Well lets see here. The LC2i can be used with any amount RMS amp. The 400 watts power handling it is talking about is what can be input into the lc2i. Your stock speakers where you catch the signal will only be putting out about 25-50 watts, so you are good there. All the lc2i is doing is converting signal to rca where your amp can be hooked up to it, but its better than a cheap line out converter because it boosts the volts going to your aftermarket amp. It is great and i highly recommend it. Your amp, (Massive audio?), is only rated at 1200 watts rms at 1ohm, 650 at 2ohm, and 350 at 4ohm. You can never go by peak power, that number is pretty much irrelevant. So you have 3 kicker cvr's in either dual 2ohm or dual 4ohm version. If you have the dual 2ohm, and if they are all wired together correctly, you will have a 3ohm load at the amp. And at 3 ohms your amp is only putting out about 500watts RMS. Your subs are rated up to 400watts RMS each.. So you are only getting about 165 watts to each speaker, thats not going to thump too loud. If they are the dual 4ohm version, then you still only have 2.7ohm load at the amp, which is going to give about 600 watts rms. Thats still only 200 watts to each sub. It honestly would probably thump harder with only 2 subs, depending on which dvc ohm version you have, because you are robbing power from them by adding in a third sub and not having the amp large enough to push all of them efficiently. Check out this link for sub wiring diagram. [ CODY D  Mar 07, 2015 ]
How Is your amp connected to your head unit? [ DOUG  Mar 06, 2015 ]
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. You can also post your question in our forums: Or try our online support center: [ Jeff  Jan 05, 2015 ]  Staff
For 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. [ Krissy  Dec 24, 2014 ]  Staff
Sorry, forgot to include model year. it's a 2011 GMC Sierra EXT [ Tim  Dec 23, 2014 ]
Quite a lot of choices you have listed. I will tell you what I did with mine, and hopefully that will help guide you. I tied off the input to the 6" speakers in the roll bar sound bar, to the inputs of the converter. From there I went to the inputs of a 2 channel / 1000W amp. From there to a Rockford Fosgate sub box with dual 12's. Because of the limited capacity for power that the factory speakers (6) can handle, I left them on the power from the factory deck. Sub hits hard, and highs are good, especially with the factory super tweets. [ MARC L  Dec 18, 2014 ]
I have a JK also and I used the LC2i so I didn't have to remove the receiver. I installed it before 2 amps and 2 12" subs by splicing into the OEM subs wiring. Once set the LC2i let me increase the volume on both amps at the same time. The OEM amp in my JK is good enough for the components so I used the LC2i just for bass. The LC2i is designed just for amp installation with OEM receiver. Once installed use amp per instructions. [ DOUG  Dec 17, 2014 ]
Theoretically you could, but it would be better and easier to just go with the lc6i or lc7i. The lc2i will only provide you with 2 channels/outputs. [ BYRON  Dec 17, 2014 ]
I forwarded your question to an Advisor and they responded with the following: I would not recommend turning a 2-channel line output converter into a 4-channel line output converter via splitters. If you need to hook up more than 2-channels and still need a line output converter then I would recommend this unit by AudioControl. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Dec 01, 2014 ]  Staff
Power and Ground wires, plus a turn on lead and two of your speaker channels from your factory head unit for your inputs and RCA cables to your amp or amps for outputs. [ JOHN J  Nov 21, 2014 ]
i used the lc2i to replace my facoty sub and add a amp. so i just used the leads going into the factory sub itself then from the 2i to the amp then sub. great little piece for what i used it for works very well, but audio control makes great electroincs [ TROY  Nov 16, 2014 ]
For 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. [ Krissy  Nov 16, 2014 ]  Staff
More gain to the subwoofer having two remote level adjustments. [ JOHN J  Nov 21, 2014 ]
I believe the remote level knob is to boost frequencies around 35-45 Hz to give a little extra bass. Definitely worth the $30 to add. [ BASIL  Nov 18, 2014 ]
Sounds like you have what you need. The AccuBase control is what corrects the Roll-off. The Remote lead is for the Bass control just like the one on your powered unit and can be optionally installed for those who do not have a remote off their amps. You're better off Tuning this to meet the max threshold your Amp needs, tune your amp, and only use the Amp remote for any quick tweaks. Otherwise, you may not reach full potential since it probably functions similar to a radio Bass setting OR worse throttles the voltage. Take a meter to it to if still uncertain. [ lyle  Nov 18, 2014 ]
I used the LC2i in a 2014 Subaru Forester. It is connected to the front 2 speaker wires behind the stock radio. I used rca cables to feed a Rockford Fosgate P500X4D 4 channel amp. The front channels of the amp power a pair of Focal 165 KRX2 separate speakers mounted in the stock locations via the factory speaker wiring and the rear channels are bridged to feed a JL Audio CP108LG sub woofer under/behind the drivers seat. Since it was a new car, I paid a local specialty shop to do the install and line the front doors with Rattle Trap FatMat. The sound of a CD in the stock head unit is phenomenal but, this is also a function of the speakers and amp. In this configuration, I mute the rear channels. The LC2I does not add any static or color the sound. I would rate the unit 5 stars. If you are planning to add the LC2i to the rear speakers and expect the head unit to power both the rear speakers and the output of the LC2i, I would expect the rear speakers to have less output. You should use the LC2i to feed an amp which would then power the rear speakers and a sub similar to the setup I used. Hope this helps. The LC2i is a great little unit and I thank those on this site who positively reviewed it. [ MARK  Aug 24, 2014 ]
Ok thanks Jason, I'll be sure to ground it properly. Does this unit require a 12V constant? [ Kyle W  Aug 22, 2014 ]
in my experience with this particular product hooking closer to the speaker did not present any kind of an issue such as static and/or reducing the level from that speaker. I must say this product is very much worth the price, works beautifully. One note i may mention is to make sure you are hooking the lc2i to a non filtered speaker supply, meaning if it is a component style speaker system with a seperate tweeter from the woofer the connection must be made to the full range feed (woofer). I have also found that hooking two speaker inputs to the lc2i that are on the same channel (both left and right from either the front or rear) works best being that certain music notes may not be reproduced on just one side of the cahnel. Hope you find this helpful! [ JOEL B  Aug 22, 2014 ]
I used the LC2i to add 2 - 12" subs and I tapped into my rear left and right speakers and didn't notice that it quieted down my rear speakers. Technically I guess it could have quieted them down but my main concern was being able to keep my factory radio and keeping everything looking clean up front. The bass was pretty amazing. Just make sure you ground everything good and I think you'll be pleased with the LC2i. [ JASON  Aug 22, 2014 ]
As long as you have good connections to your amp, good power wire and good ground, you can tap into the power and ground on your amp. As far as being better than the cheaper versions, I haven't used cheaper but this has output level adjustments which come in handy. You may get a small pop sound when it shuts off your system. For the price it's not a bad LOC. [ BRIAN  Aug 19, 2014 ]
You still have to run a power wire for your amp, so this unit gets its power from the amp. I purchased one of these about a year ago and it was an amazing product until the remote terminal stopped working after a week. What this unit does is give full power after tapping into the line level inputs (speakers). Cheaper LOC's give you a very reduced voltage. this was a Great product till it went bad. I never returned it because the sub box was too big for my trunk anyway. (And I'm lazy. lol) Occasinaly you will get a product that has an issue right after you get it, but it is rare. And from what I hear Crutchfield has amazing customer service if you have an issue, so I would reccoment this product to anyone. Good luck! [ IAN  Aug 19, 2014 ]
There are many place you could tap the 12v too. I would tap it to my fuse box (that has a 12v signal with shut off) like your radio fuse. That way it don't drain your battery once the vehicle is turn off. Or connect it to your amp remote turn on wire. The advantage from the LC2i is, it better quality, Handle high rms from the source your pulling the sounds from, adjustable and it does not get burnt. I did have a schoshe and other brand, they just burnt/fry after a few month due to poor quality that built inside. Can't go wrong with LC2i. Might be expensive compare to other BUT think about it. Would you rather do it once and have a item that last you for years to come or you wanna be cheap and buy junk that last few months and die. That would mean you have to take it apart and waste more time and money that is not worth it. At the end you might pay more then the LC2i. LC2i is a great investment!!! Buy it!!! -Son [ Son  Aug 18, 2014 ]
I initially tried to add an amp and sub to factory headunit. Without a LOC, it just didn't get enough signal to make the sub sound good at all. Then I did a lot of research and got the audiocontrol LOC. What a huge improvement! You'll need to research how to tap into your 12v- google search through forums. This LOC is far superior to those cheap ones. This one can do so much more with ensuring level base sound at all volumes and is very adjustable. I wouldn't even consider the cheap alternative. [ DAVID  Aug 18, 2014 ]
Any ignition-tied 12v source will work (only want it on when the car/radio is on). A good place for power is the factory radio power supply. That way, if you have a system where the radio stays on until you open a door, the LOC will remain active. The main benefit of this particular LOC is its power handling (400 watts). This is very helpful when trying to tap off a signal from a factory-amplified subwoofer. Most LOCs cannot handle the higher power the factory amp will put out. Some would ask why they can't just tap off the signal BEFORE the factory amp. In some cases you can, but in others, the volume for the subs is modulated by the amp. So if you were to make the connection pre-factory-amplifier, the sub's volume may not adjust with the system volume. [ JULI  Aug 18, 2014 ]
I had a difficult time with that product. I never got it to work properly. I kept getting a ground loop noise until I took it out of my system all together and used the high level inputs that came on my amp [ DAREN  Aug 18, 2014 ]
For 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. [ Krissy  Aug 16, 2014 ]  Staff
Your adjusting the bass of your factory speakers if you get the remote you will have more adjusting capablity [ GABRIEL  Aug 17, 2014 ]
It would, I would suggest you turn the bass setting lower for the speakers inside and then use this unit to make sure you are still getting all the low end notes, if you want to keep the same tuning for notes but want to adjust the power of your subs I would highly recommend a remote for your sub amp also. [ Craig  Aug 17, 2014 ]
This is a good product for what you need. It will handle the low freq for the sub and keep your interior speakers playing the upper range freq. hope that helps. [ REGINALD  Aug 17, 2014 ]
Is your amp turned to LPF?. There should be a switch on your sub amp that says something like LPF/HPF. Needs to be switched to LPF. If you are getting music through the subs, not just bass, you probably need to adjust your amp. This unit helps boost the signal going to the amp and gives the sub more clean power than just a regular cheap line out converter. This unit is only used with the stock radio. Your stock radio will still control tuning on all speakers, including the sub. But you can set the bass higher with the lc2i, and pretty much turn the bass all the way off on your headunit. [ CODY D  Aug 17, 2014 ]
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. You can also post your question in our forums: Or try our online support center: [ Krissy  Aug 12, 2014 ]  Staff
The inline converter listed here takes your high output factory deck and steps down the output to clear the signal up before sending it to an amp. I bought this to use with my Jeep Wrangler factory deck, and am using a 1000W amp to a Rockford Fosgate sub box. I am very satisfied with it's performance and would recommend it to you. [ MARC L  Jul 17, 2014 ]
If you want to keep all factory controls functioning as they are and if you want a better/ cleaner signal to amp/ pre-amp, use the line converter. Additionally, some factory head units deliver substandard bass signals to protect cheap speakers (on some models). Again, if you want a solid bass response, the LC2i does the job. I paired this with a powered sub and factory head unit from Chrysler (MyGig RER) and it sounded great. Really can't go wrong for $100. [ MARK  Jul 15, 2014 ]
Yes you need it while utilizing the factory head unit because your factory head unit doesn't have the pre amp output the LCi2 does [ GABRIEL  Jul 15, 2014 ]
I forwarded your question to an Advisor and they responded with the following: If you choose to bypass the GTO circuit, you will need to run a switched lead to the Remote In terminal. I would recommend a constant circuit be used for the + 12 V terminal. This is how it would have been wired in the "good old days", before head units had a turn on lead. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Jun 13, 2014 ]  Staff
This is a really nice unit. I installed into a BMW 330i because I wanted to add in an older bazooka tube with an older amp I had. The processor keeps the bass appropriately up for the volume range. The end result is the bass is heard with the volume down and it isn't distorting with the volume up. I'm impressed with just how good it made this old gear sound. [ DAVID  Mar 31, 2014 ]
its a sony sub/amp from factory [ Michael  Mar 28, 2014 ]
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. You can also post your question in our forums: Or try our online support center: [ Jeff  Feb 25, 2014 ]  Staff
The LC2i should work great in that application. The only drawback is that you will not have a fader. You can install a dual amp balancer or an EQ to to get fade control. [ MITCHELL  Feb 13, 2014 ]
Zach, installed this unit in an 08 Avalanche with factory premium Bose/Nav HU. I added an amp and sub to my factory unit using the LC2i. Simply tapped into the factory rear speakers, and powered the amp and sub. The set up gave me what I was looking for without losing the control functions from my factory HU. No regrets on my end. I feel I get most of this stuff, but I do admittedly get stumped with installation and set up at times. I've purchased a few items from the folks at Crutchfield, and their tech support has been great to work with. Don't hesitate to reach out to them... [ DANIEL J  Feb 04, 2014 ]
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Jeff  Feb 01, 2014 ]  Staff
yes you can [ Derek  Jan 04, 2016 ]
I would certainly use it. I think my bass amp is above 500 watts and this unit is excellent. I'm super happy with it. [ DAVID  Jan 27, 2014 ]
Hello Kyle, yes you can use this unit with your 1000 watt amp. The 400 watt max. Is referring to the maximum wattage that can be sent into the LC2i from your existing equipment. The output will be low level (pre-amp) . Safe for any type amplifier. Mike [ MIKE F  Jan 27, 2014 ]
Yes. You are spot on. [ MARK  Jul 15, 2014 ]
I am using the unit to supply signal from a factory deck to a 1000w amp and Rockford Fosgate sub box. So the input wires I am using are tied into the same wires powering the stock rear right and left speakers. The existing head unit will still control and volume up and down for all components of the system. There is a gain setting on the LC2i where you can pre-set the drive you want to send the amp and sub. [ MARC L  Jan 20, 2014 ]
Yes you are right. It has worked great for me and I still have all of my steering wheel controls. It sounds great. [ SHAUN A  Jan 10, 2014 ]
Mike, you are correct with your assumptions and you can also add an additional remote to the LC2i to adjust the bass if necessary . Good luck on your system build. [ OSCAR  Jan 07, 2014 ]
Yes everything you said is true. The lc2i will have a gain (bass) adjustment as well. Make good thorough connections and this thing works flawlessly. [ ROBBIE  Jan 06, 2014 ]
You are correct you just have to tap in to the existing speaker wires [ DAVID  Jan 06, 2014 ]
Yup, you've got It right. It's really seamless and easy once you set the levels (which is painless) and acts like a factory system. For easy bass level adjustability I used an alpine amp with remote knob mounted discreetly on my dash. [ TRAVIS M  Jan 06, 2014 ]
Yup, you've got It right. It's really seamless and easy once you set the levels (which is painless) and acts like a factory system. For easy bass level adjustability I used an alpine amp with remote knob mounted discreetly on my dash. [ TRAVIS M  Jan 06, 2014 ]
I believe you have it correct. Make sure you are tapping the front speakers, in most systems the rear's aren't an ideal source. You'll need to fiddle with the various gain settings to get the sub to blend with the existing system. In my case I was adding two amps, one for the front stage and one for the sub. I cut the wires coming from the factory amp to the front speakers and ran a set of speaker wires back to the LC2i. Ran RCA's to the new amps and then speaker wire back the the existing front speaker wires. This is a very good Hi-Low converter. You can tell it's working hard to reject any noise. Just don't count on the bass restoration feature. It's only effective at adding a muddy bottom to the music. Get a high quality sub-amp like the PDX's and count on the RUX-knob to add and subtract bottom as needed. [ ROBERT  Jan 06, 2014 ]
That is correct! Splice into the speaker wires and go directly to the lc2i. And yes, your main volume will control all speakers and subs. Although you only need input from one speaker, not both left and right speakers. I used input from my passenger side rear door speaker. The remote turn on to the amp is located in the " left " input on the lc2i. So I hooked up positive and negative from my speaker into the left input on the lc2 to act as a remote to turn on my amp. For the power and ground for the unit, I simply ran 18gauge wire directly into the power and ground located on my amp. Works flawlessly for 6-8 months now. Hope that helps! [ CODY D  Jan 06, 2014 ]
Mike C, I bought one of these and installed it in my 2013 Durango. The answer to your questions is yes. The LC2i gets the signal from your rear speakers and converts it to work as the signal for your amplifier. Your head unit will then control everything from volume to the equalizer. Your existing speakers will work as normal and your amplifier will receive a great signal to power your subwoofer. Kris [ KRISTOPHER  Jan 06, 2014 ]
Answers are yes and yes I do suggest you get the remote for it as well though as obviously of you want less or more bass you can control from that instead of head unit it also gives you more flexibility when running [ GABRIEL  Jan 06, 2014 ]