feedback issue, fm modulator

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=126801
Printed Date: May 13, 2025 at 12:48 PM

Topic: feedback issue, fm modulator

Posted By: iatepaintchips
Subject: feedback issue, fm modulator
Date Posted: March 31, 2011 at 1:55 PM

I have a xm portable unit that runs off the 12v power output in my 1995 Chevy Pickup. Since the fm modulator causes static, I have it running into an aux. input. When it is plugged into the 12v power output I get a feedback noise, but if I have it running off of its own battery I don't get the feedback noise but the battery as you can guess doesn't last all that long. Is there anyway to eliminate the feedback?

Replies:

Posted By: unique316
Date Posted: April 01, 2011 at 1:55 AM

I would take the power supply and take the ground and piggy it to the radio ground should isolate it

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YES....OR....NO..?
Unique
Wichita, KS

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