Upgrade Stock Stereo System - Lexus IS Forum
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post #1 of 2 (permalink) Old 03-11-2011, 03:21 PM Thread Starter
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Upgrade Stock Stereo System

This is a very easy way to upgrade your stock system for very little money. I have installed a JL Audio AMP nad bass knob. This can make your system sound just as good or better then ML system for 1000's less.

First I removed back seat and the rear deck to get to the subwoofer.

Upgrade Stock Stereo System-img_0508-1-.jpg

Then I have to splice into all of the sub wires. there is 4 wire 2 Blue and green are negative and brown and pink wires are positive. could be backwards but if you lookon the sub its self you will see blue wires that are positive and black that are negative. you are going to connect the speaker wires to the amp then the other end of the end of the wires coming from the stock amp you are going to run to the inline converter on JL amp. NO RCA wires needed at all i fyou get a amp with inline converters.

run wires threw rear deck holes and ground my JL amp on the Rear deck as well...

Upgrade Stock Stereo System-img_0507-1-.jpg

mounted JL Amp to the bottom of rear deck

Upgrade Stock Stereo System-img_0524-1-.jpg

installed the bass knob in the open front slot next to coin holder....

Upgrade Stock Stereo System-img_0525-1-.jpg

hope you guys enjoyed my post. this only cost me about $100.00 total and some time. but i already had wires to run the amp power wire.
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post #2 of 2 (permalink) Old 03-26-2011, 02:48 PM
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NICE!! I was also thinking of adding a JL amp and bass knob, are you using the factory sub??? i would think that JL amp would be too much for it, i think im going with a 12w3 in a seperate box in the trunk.
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