Strange PPI Amp Problem

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=82807
Printed Date: May 09, 2025 at 6:57 PM

Topic: Strange PPI Amp Problem

Posted By: aaronswb2
Subject: Strange PPI Amp Problem
Date Posted: September 12, 2006 at 10:07 PM

I have a PPI PCX series 280 amp that I'm using to power my 3-way component set and I have a major noise problem. There is a high speed clicking and engine noise. This is where it gets weird....without the engine running there is absolutley no noise, and if you touch the rca's and put a little pressure on them in the right way the noise goes away with the engine running! Any ideas on what is causing this????

Replies:

Posted By: oscarnl86
Date Posted: September 12, 2006 at 10:13 PM

you might wana check your ground point if the ground is not good enough youl get engine noise and i say replace your rca's. thats my opinion

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Posted By: xtremej
Date Posted: September 13, 2006 at 10:06 AM

Post what head unit you are using, make/model. Double check your grounding of the amp, meter it see what ohms it runs .5 or less is wonderful. If you have a pioneer head try rounding your rca's to the chasis of the head unit. If you review other posts with similar problem its generally 1 of the 2. Rca's next to the power wire has been brought up and gone over in depth and is highly unlikely. I have never had this as a problem, I have many installs out there sounding great.

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Posted By: DYohn
Date Posted: September 13, 2006 at 10:28 AM

Ground loop. Please read the proper grounding sticky post. The bad ground on your RCAs smells to me (like was mentioned by xtremej above) like a poor quality ground in your head unit, not bad cables. Is it a Pioneer or Sony perhaps?

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Posted By: dwarren
Date Posted: September 13, 2006 at 1:47 PM

Where and what is your amp mounted to?

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