amp won’t work!

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=39833
Printed Date: September 19, 2025 at 3:51 AM

Topic: amp won’t work!

Posted By: dave25456
Subject: amp won’t work!
Date Posted: September 27, 2004 at 10:19 AM

I was installing a kenwood hu unit and a 400 watt profile amp with dual 8" pyaramid subwoofer now the problem is that when I hooked everything up.The amp kept shutting on and off now I checked all the wires and re ran the wies and put the ground somewhere else and the problem was still there.Then I tried to run another amp I put on a 1000 watt pyle amp and when I turned on this amp the protect light just stayed on now . me question is what could be the problem I now it is not the amps or the radio or the speakers because I tried it all could it be the car?He owns a honda civic 1991 any help will be appreciated.thanx

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dave25456

Replies:

Posted By: DYohn
Date Posted: September 27, 2004 at 10:53 AM

"amp turning on and off" or "protection light on" are standard symptoms of too low impedence load from your speakers. How are your subs wired?

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Posted By: jeffchilcott
Date Posted: September 27, 2004 at 4:36 PM

sounds like a impedance problem or just a sh*tty amp

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Posted By: dave25456
Date Posted: September 28, 2004 at 10:39 AM

I hooked it up again put not on the car and it worked fine so I know it is not the equipment it has to be another problem I just don't know what any suggestion.thanx

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dave25456

Posted By: DYohn
Date Posted: September 28, 2004 at 11:14 AM

If the setup functions in another car (or when powered from another 12 volt source) then either your alternator or electrical system in the car is defective or overloaded and the amp is shutting down on low voltage, or you have a very bad power/ground connection for the amp (probably the ground.)

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Posted By: Rushman
Date Posted: September 29, 2004 at 6:51 PM

I agree with the lack of grounding in the car. seen this problem too many times someone new doesnt use sufficient size wire and the amp cuts out when you crank it up. Check the grounds at both ends of the battery cables. what ever size power wire you use usually use the same or bigger ground wire to complete the circuit.