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Scosche LOC90

2 Channel Line Out Converter with Remote Volume Control


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LOC90 Line Output Converter converts speaker wire (high-level) to RCA outputs (low-level) for the purpose of adding a 2-channel or mono amplifier to an existing factory or aftermarket stereo system. The LOC90 features up to 4 volts output and signal sensing turn-on with ability to drive a a relay. The LOC90 also includes a convenient remote mountable volume control for precise control over subwoofer amplifier level from up front in the vehicle.

General Features:

  • 2 Channel Line Out Converter w/Signal Sensing Turn On
  • Includes mountable remote controller of adjusting subwoofer level from the dash
  • Converts car stereo speaker wire outputs to RCA cable outputs
  • Allows the addition of 2-channel or Mono amplifiers to factory or aftermarket stereos
  • Provides amplifier remote turn on output without removing car stereo
  • Works with high power car stereos up to 80 Watts per channel
  • Easy to follow installation instructions
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Line-Out Converter Specifications

Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Maximum Power Input
This is the maximum amount of power (measured in watts) that the unit is designed to handle. Exceeding this amount can void warranties and damage the unit.
160 watts

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating


Denver, CO

Verified Purchase
Worked great for a day...

April 5, 2016

I thought this would be a great way to get a signal to my amp, just adding bass to stock system. It worked for a day, now I am not getting a signal to the amp. I trouble shot the amp and sub, they were working... this is the only thing left but it's deep in the dash and haven't had time to take it to the shop to pull it apart.

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Why did you choose this?
Sonic Electronix Store
Didn't want to buy an aftermarket stereo just to plug in an amp
Marco P on Nov 28, 2014
ROBERT R on Aug 22, 2014
so basically i take the + and the - from my rear speakers and connect them to the unit? and what if my rear deck speakers are run in parallel with my rear door speakers. I have a volvo s 60 2.5t 2004 it is confusing and i bought this unit to make things easier because i like the stock deck and didnt want to have to replace it
James S on Jun 10, 2015
Best Answer: It was a little confusing for me too. But hooking it up wsn't too hard once I figured it out. I hooked the two positive to a positive wire going to one of my rear speakers and the two negative to a negative wire to the same speaker. Then ran the remote wire and that was it. The ignition wire wsn't necessary in my case, so I just capped it off. I only hooked it to one speaker and it works fine for me. I wouldn't figure it would matter how you have yours run parallel. Hope this helped.
Reply · Report · JOHN R on Jun 11, 2015
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I have a 2011 Fusion with sony system with factory amp and 2 6x9 subwoofers in the rear deck tray, can I connect it to them or does it need to be wired to door speakers since there high freq.?
michael b on Mar 7, 2016
Best Answer: I connected mine to my 6x9 rear deck speaker and it works fine. I would think you would be fine connecting the way you propose.
Reply · Report · JOHN R on Mar 7, 2016
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Is it necessary to use the ground wire?
A shopper on Feb 3, 2015
Best Answer: Hello,

If you wish to use the REMOTE TRIGGER [remote turn on] feature, yes.
Reply · Report · Customer SStaff on Feb 3, 2015
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Does the remote volume controller Plug into the Line out converter box to control the input volume to the Amp? or does the volume controller need to be plugged into the Amplifier? Thanks, Scott
A shopper on Sep 25, 2014
Best Answer: It has a wire and a plug that plugs into a socket on the LOC box. U wn't even need the remote wire from ur stereo/head unit. The blue wire coming off the LOC sends a signal to the remote switch on your amp.
Reply · Report · JOHN R on Oct 6, 2014
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How to connect level control bass?
A shopper on Oct 13, 2016
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Scosche LOC90