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SCOSCHE SLC4 Car Stereo Speaker 4-Channel Audio Lineout Converter/OEM Amplifier Adapter with Adjustable Level Controls

4.2 4.2 out of 5 stars 435 ratings

$14.99
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Purchase options and add-ons

Item dimensions L x W x H 1.25 x 4.38 x 11.38 inches
Voltage 14.4 Volts
Manufacturer Scosche
Mounting Type Surface Mount
Brand Scosche

About this item

  • ADD SUBWOOFERS: Works with high power car stereos (up to 80 watts per channel) to add subwoofer bass systems to any car stereo.
  • EASY TO INSTALL: Provides amplifier remote turn on output without removing car stereo.
  • OUTPUT CONVERSION: Line out converter for car stereo speaker wire outputs to RCA Cable outputs.
  • ADDITIONAL CHANNEL: Allows the addition of 2 or 4-channel amplifiers to factory or aftermarket stereos.
  • BUY WITH CONFIDENCE: Backed by Scosche’s Lifetime Tech Support and Limited Lifetime Warranty.
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SCOSCHE SLC4 Car Stereo Speaker 4-Channel Audio Lineout Converter/OEM Amplifier Adapter with Adjustable Level Controls

SCOSCHE SLC4 Car Stereo Speaker 4-Channel Audio Lineout Converter/OEM Amplifier Adapter with Adjustable Level Controls


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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 1.25 x 4.38 x 11.38 inches; 6 ounces
  • Item model number ‏ : ‎ SLC4
  • Department ‏ : ‎ car accessories
  • Date First Available ‏ : ‎ September 15, 2005
  • Manufacturer ‏ : ‎ Scosche
  • ASIN ‏ : ‎ B000BFL52Q
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.2 4.2 out of 5 stars 435 ratings

Product guides and documents


Product Description

double din mounting kit car audio video dash radio bracket head unit installation stereo bluetooth

Whether you're looking for a double din car stereo, a car stereo with Bluetooth, or a touchscreen car radio, our comprehensive range of car audio accessories, mounting kits, and head unit installation kits has you covered.

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SCOSCHE INDUSTRIES

Founded in 1980, SCOSCHE runs on our passion for cool vehicles, amazing sounds, the great outdoors, travel, motorsports, horsepower and voltage. We're a company of gear-heads, drivers, surfers, racers, riders, tech buffs, tech users, innovators, and relentless pursuers of perfection.

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Discover the perfect fit for your car audio and video needs with our comprehensive Fit Guide. Whether you're looking for a double din car stereo, an interface, a wire harnesses, antennas, speaker adapters and more, our guide provides all the essential information and products you need. From head unit installation kits to wire harnesses, our wide range of car audio accessories and mounting options ensures a seamless and professional setup.

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Easy to Install

Experience the convenience of easy installation with our selection of car audio and video accessories. Our car stereo installation kit and mounting options make upgrading your vehicle's entertainment system a breeze. From double din kits, interfaces, wire harnesses, antennas, speaker adapters and more, we have everything you need to enhance your car audio experience.

Factory Quality

Experience factory-quality excellence with our range of car audio and video components. Whether you're seeking a double din car stereo, car radio touchscreen options, our products meet the highest standards of quality. We offer car stereo installation kits, interfaces, wire harnesses, antennas, speaker adapters and more, to ensure your car audio system is professionally integrated.

Precision-Designed

Experience precision-designed perfection with our comprehensive array of car audio and video solutions. Whether you seek a double din kit, a stereo interface replacement, a stereo harness or antenna adapters, our products are meticulously crafted for flawless integration. Our range of product options ensure your car audio system is seamlessly installed.

Factory Matched Finish

Achieve a factory-matched finish with our range of car audio and video products. Whether you seek a double din kit, stereo interface replacement, wire harness or antenna adapter, our products are meticulously crafted for a seamless appearance. Our car stereo install and dash kits ensure your car stereo integrates perfectly with your vehicle's interior.

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Easily Install an Aftermarket Stereo with High-Quality ABS Kits

Enhance your car audio experience with our top-notch car stereo installation kits. Whether you're looking to install a double din car stereo or need a mounting kit for your car radio touchscreen, our range of product options ensure a precise fit and hassle-free installation.

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SCOSCHE SLC4 Car Stereo Speaker 4-Channel Audio Lineout Converter/OEM Amplifier Adapter with Adjustable Level Controls
SCOSCHE SLC4 Car Stereo Speaker 4-Channel Audio Lineout Converter/OEM Amplifier Adapter with Adjustable Level Controls
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Price$14.99$24.99$23.95-26% $14.85
List:$19.99
$14.54-9% $18.22
Typical:$19.95
Delivery
Get it as soon as Saturday, May 18
Get it as soon as Saturday, May 18
Get it as soon as Saturday, May 18
Get it as soon as Saturday, May 18
Get it as soon as Saturday, May 18
Get it as soon as Saturday, May 18
Customer Ratings
Easy to install
4.5
4.2
4.1
4.2
4.4
Value for money
4.5
4.5
3.3
3.9
3.7
Sound quality
4.3
4.4
3.4
4.1
3.5
Sold By
Amazon.com
NVX®, Victor Fitness®, Belva® Official
DS18
Amazon.com
Speece, Inc.
kisuin
number of channels
4
4
2
2
2
4
voltage
14.4 volts
12 volts
12 volts
12 volts
12 volts
mounting type
Surface Mount
Surface Mount
Surface Mount
Surface Mount
Surface Mount
Surface Mount

Looking for specific info?

Customer reviews

4.2 out of 5 stars
4.2 out of 5
435 global ratings

Customers say

Customers like the performance and ease of installation of the electronic component amplifier. For example, they mention it works great, is simple to use, and easy to connect. That said, opinions are mixed on sound quality, quality, value, adjustability, and size.

AI-generated from the text of customer reviews

40 customers mention30 positive10 negative

Customers like the performance of the electronic component amplifier. They mention that it works great, is good for the purpose, and is easy to install. Some say that it has excellent response at all volumes and is a simple little gadget that is really useful.

"...It was super easy to install, and solved the problem! The gain adjustments allowed me to get the perfect volume calibration, and the sound is great...." Read more

"works well in the line out configuration but the screw connections are not super secure for the tiny gauge wire that runs from the oem head unit of..." Read more

"...So the RCA outputs are useless because of so much noise is coming out of those connections from inside the radio...." Read more

"...It works great! I took my time putting everything together, I didn't lose any screws and I was careful with everything...." Read more

15 customers mention12 positive3 negative

Customers find the installation of the electronic component amplifier to be easy. They mention that it's simple to use, and the wiring is well labeled. Some say that the converter helps interface with their factory amp and speakers.

"...It was super easy to install, and solved the problem! The gain adjustments allowed me to get the perfect volume calibration, and the sound is great...." Read more

"...4 channels into 6 (so you can run a subwoofer from it easily), is easy to install, has high build quality, and also sends as pure a signal as you..." Read more

"...It was very easy to connect as there are available screw terminals for both input and output. Sounds very nice." Read more

"...I attribute this to the fact that this device is very simple and is not powered to drive the output line...." Read more

32 customers mention15 positive17 negative

Customers are mixed about the sound quality of the electronic component amplifier. Some mention that it works well, produces virtually zero noise or distortion, and sounds very clean. However, others say that it has a very high noise ratio, produces too much static, and yields muted audio.

"...This interface is a cheap fix and solved my sound problems. I highly recommend this to anyone at a great price!!" Read more

"...the speakers up to the lineout RCA connectors instead, and the volume was way low (the lineouts were only 2 amps)...." Read more

"...This device successfully eliminated my alternator whine, and my system was noise-free! So, in a sense, the device does what it says...." Read more

"...but depending on where I attached it to the body of the car, it made the noise worse. Play around with location and whether you will use it." Read more

22 customers mention7 positive15 negative

Customers are mixed about the quality of the electronic component amplifier. Some mention it's an excellent product with stable outputs, while others say it'll break easily. The quality of this product is very cheaply made, flimsy, and prone to failure.

"...The device does feel flimsy, but it is solid enough to stay put in your car without worry of it breaking.Final Verdict:..." Read more

"...The Honda premium HU in my car actually has pretty clean and stable outputs, even for a factory unit...." Read more

"...The gain controls seemed flimsy - I followed the instructions not to push down as you turn them but had to apply an uncomfortable amount of force to..." Read more

"...It's VERY cheap plastic, so adjust the little volume screws carefully! Other than that, it does what it's supposed to do and it's inexpensive...." Read more

15 customers mention7 positive8 negative

Customers have mixed opinions about the value of the electronic component amplifier. Some find it worth every penny, while others say it's a waste of money.

"...This thing is pure GARBAGE...." Read more

"...Volume 1 sounded like it was on 25! This interface is a cheap fix and solved my sound problems. I highly recommend this to anyone at a great price!!" Read more

"...The plastic screwdriver thingy that comes with it was pretty useless...." Read more

"...From what I could gather, it appeared to be a low-price option for my system that had a potentially good upside...." Read more

7 customers mention4 positive3 negative

Customers are mixed about the adjustability of the electronic component amplifier. Some mention that the separate level adjustments are nice, and the gain adjustments are easy to make, while others say that the gain adjustment is difficult to see and use, and that the gains come broken.

"...Adjusting the gains was easy...." Read more

"The main problem with this device is the gain adjustments. They are very flimsy and prone to failing...." Read more

"...Adjusting the gains was an easy process, they even include a tool on the device for doing this!!Cons:..." Read more

"This does not work. The gain adjustments come broken and if you barley attempt to adjust the remaining controls they break off and it is virtually..." Read more

6 customers mention3 positive3 negative

Customers are mixed about the size of the electronic component amplifier. Some mention that the small size makes it easy to move out of the way, while others say that the screw heads are tiny and the metal is soft. Some say that it's a little large to fit behind some dashes.

"...The small size makes it easy to move out of the way, even when installing a double DIN head unit...." Read more

"...My only quibble with this is it's a little large to fit behind some dashes, but it could still be mounted out of view under the dash with longer..." Read more

"...It's also small enough to fit under your dash and each of four speakers can be controled separetly." Read more

"...that you can tighten it firmly without slipping out, since the screw heads are tiny and the metal is kinda soft...." Read more

7 customers mention0 positive7 negative

Customers are dissatisfied with the wire of the electronic component amplifier. They mention that it's hard to get wires to stay in, and that the screw connections are not super secure. Some say that the speaker wire does not fit in through the holes.

"works well in the line out configuration but the screw connections are not super secure for the tiny gauge wire that runs from the oem head unit of..." Read more

"...My only gripe about this device is that the screw down wire terminals aren't the best grip and small wires without enough slack tend to slip out." Read more

"...But it does the job.Also wish that it held wires tighter...." Read more

"Lost one star because it is hard to get wires to stay in. Also larger than I thought it would be. Make sure everything will fit back in the hole." Read more

Not a quality part
2 Stars
Not a quality part
The main problem with this device is the gain adjustments. They are very flimsy and prone to failing. Everything sounded very clean when I first hooked everything up, but then I tried to adjust it and one of the pots wouldn't budge and another broke off, so one speaker was quiet, one basically off, and the other two a good volume...Also you can see in my picture that mine had a mistake with the output channels. The picture shows FR-FL-RR-RL, with red for right channel and white for left, but on mine the labels are FR-FL-RL-RR (rear right/left channels flipped), so right is red on front channel but white on rear channel. I tested and found that the labels and not the colors were correct and at least the worst that could happen is you mix up rear channels, but that's some awful quality control. I didn't have the problems with input wiring that several other reviewers noted and the sound was very clean, but it is going to have to be replaced now and I would not get another one.
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Top reviews from the United States

Reviewed in the United States on April 19, 2020
I was installing an aftermarket stereo in my 1998 Mercedes SL500 with a factory amp. After connecting the speaker wires from the radio to the car's wiring harness, the lowest volume setting was entirely too loud. So I hooked the speakers up to the lineout RCA connectors instead, and the volume was way low (the lineouts were only 2 amps). I looked online for help, then went to two radio installation shops and no one knew what to do. After a little more online research I discovered this Lineout converter was specifically for this issue. It was super easy to install, and solved the problem! The gain adjustments allowed me to get the perfect volume calibration, and the sound is great. My only quibble with this is it's a little large to fit behind some dashes, but it could still be mounted out of view under the dash with longer speaker wires.
One person found this helpful
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Reviewed in the United States on December 23, 2017
works well in the line out configuration but the screw connections are not super secure for the tiny gauge wire that runs from the oem head unit of my mini cooper. i have had to strip and re-attach a couple of the leads after they lost connection in super hot/cold environments. make sure you have a screw driver that is not too small. you need one that is exactly the size of the screw head so that you can tighten it firmly without slipping out, since the screw heads are tiny and the metal is kinda soft. someone already mentioned not to loosen them too much or they will fall out and you will for sure lose the screw. this almost happened to me and it would have been game over. i would have had to buy a new one. mine works best with all the gains at their max. tucks away fine and the loops on the sides are good for tiny zipties to secure it.
3 people found this helpful
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Reviewed in the United States on November 8, 2021
This works like it says. Solved my problem with my factory amplifier. I couldn’t listen to the radio stations because they were too loud! Volume 1 sounded like it was on 25! This interface is a cheap fix and solved my sound problems. I highly recommend this to anyone at a great price!!
One person found this helpful
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Reviewed in the United States on January 5, 2020
I have a 2016 Honda Accord EX-L with the premium (not bad, but not premium by most standards) audio system.

What I did was keep the factory head unit (HU) and removed everything else. The Honda premium HU in my car actually has pretty clean and stable outputs, even for a factory unit.

The problem I was having was that the line outs (speaker leads) signals from the HU were in that middle ground between the low and high level inputs on the amp. When attached to the low level inputs, there was this oppressive hum because the signal was too strong. When attached to the high level inputs, I was running the amp at full gains and the HU at 80% volume to have what I consider normal sound level. At full amp gain, I was getting some hiss.

This device allowed me to hook up to the amp's low level inputs and reduce the signal from the HU to a level that the amp could handle.

If you are having any hum or buzz, revisit your cable routing. You hear this all the time, but keep power/ground wires away from the audio signal wires. This applies even to shielded RCA and this device. I was still getting some hum until I realized my ground for the amp ran beneath the SCOCHE LOC, under the carpet. There is a black wire from the LOC that they say can be attached to a ground in case of 'noise', but depending on where I attached it to the body of the car, it made the noise worse. Play around with location and whether you will use it.
9 people found this helpful
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Reviewed in the United States on March 21, 2021
I was trying to replace the radio in a C4 Corvette with the Bose Gold sound system. This system sends low level RCA signals to each of the powered speakers. The problem with the inexpensive head units (I was using Hipzo) is that they pick up a lot of engine and computer noise in the low level signal. So the RCA outputs are useless because of so much noise is coming out of those connections from inside the radio. So you use the SL4 to connect to the full power speaker output (this also has transformers to isolate the ground) and reduce them back to a clean low level RCA output. It is the only practical way to get this type of system to work.

So, if you are dealing with sending a low level preamplifier RCA signal to an external amplifier, this is a must have if you are picking up engine noise. It is probably a must if you have a C4 Corvette and trying to use the Metra harness to bypass the stock receiver.
4 people found this helpful
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Top reviews from other countries

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Jayden Clark Kim
5.0 out of 5 stars Great value
Reviewed in Canada on September 19, 2023
It's a great LOC for a 4 channel system which most of the cars use these days.
I used it on my car with a factory amp, and that was the main reason to use this as I upgraded the head unit with an aftermarket one. The factory amp just could not digest the hi level input from the aftermarket head unit harness, causing all kinds of static noises.

This one got 95% of the buzzing noises. Sometimes I still heard a bit of noise.
I returned the unit in the end and went with a 2 of higher quality LOCs which completely removed the buzzing noise.

My car is a Honda CRZ which uses a hybrid system, and it's notorious for making static noise compared to non hybrid engine cars.
so maybe, this LOC will work for your car if your car is a pure gas car or elec car.
Robin Romero
5.0 out of 5 stars Lo que necesitaba
Reviewed in Mexico on December 3, 2020
Justo lo que necesitaba! Pequeño, fácil de instalar detrás del estéreo y de ajustar. Con esto queda completa mi instalacion.
Loc Nguyen
3.0 out of 5 stars But customer service is fine.
Reviewed in Canada on June 17, 2016
Overpriced. But customer service is fine.