need help with amp

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=8337
Printed Date: May 13, 2025 at 7:14 PM

Topic: need help with amp

Posted By: bigal7
Subject: need help with amp
Date Posted: January 19, 2003 at 2:14 PM

Amp is a Pyle PLA2170 600 watt powering to 12" Pioneer IMPP Subs. HU is factory Chevy CD. When I crank the truck the amp goes into protect mode, but works fine with the truck off and keyed to accessory. Have rechecked and tightened all wiring. Front and rear speakers powered by HU work fine. Any ideas would be greatly appreciated.

Replies:

Posted By: ViperATC5
Date Posted: January 19, 2003 at 5:15 PM

sounds to me like the amp is seeing an increase in voltage from either the 12v constant wire or from the remote turn on wire and this is what is causing it to go into protection mode - unfortunately it is probably a bad amp, and has nothing to do with your install

Posted By: ViperATC5
Date Posted: January 19, 2003 at 5:17 PM

Just to be thourough- the increase in voltage occurs when you crank the truck and the alternator runs and there is an overall increase in voltage throughout the entire electrical system - if you have a DMM check to see if that voltage on either wire increases with the vehicle on

Posted By: bigal7
Date Posted: January 19, 2003 at 7:03 PM

Thanks for the reply. We borrowed an amp and everything works fine. Going to buy a new one tomorrow.

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