Adding an amp to a factory HU?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=14200
Printed Date: June 01, 2024 at 9:52 AM

Topic: Adding an amp to a factory HU?

Posted By: focker
Subject: Adding an amp to a factory HU?
Date Posted: May 30, 2003 at 12:11 PM

I own an '02 Nissan Frontier with the stock Rockford Fosgate head unit. Last month I read an article in a car audio mag, where an install featured a 911 Turbo with the OEM head unit intact. They said it was accomplished by soldering female RCA adapters onto the factory wire harness which fortunately had low-level ouputs. I was wondering, since the stereo in my Frontier has a stock 8" Rockford sub, if there is a way to test my head unit for a low-level signal to connect an aftermarket amp.

Replies:

Posted By: esmith69
Date Posted: May 30, 2003 at 1:01 PM

try a connect a small test speaker up to the positive and negative for one of the 4 channels. If you get sound that's barely audible even with the volume turned up, it's a low-level connection. If it's normal volume then it's a high-level connection.

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Ethan
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Posted By: Xplocivic
Date Posted: May 30, 2003 at 8:28 PM

Or just use a speaker level to RCA converter. They are pretty inexpensive nad easy to install. If you do use a converter, I would suggest installing it after the factory amp. Good luck.

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