Another Engine Whine Problem

[Harrison486 10+ year member]

I posted in another thread about my problem and no one really answered so ill try here:

Alright... Heres My Problem

Just installed a 4-channel amp into my system and now I am having engine whine.

I did your number 2, ran my stuff off of a his head unit, and my car sounded great. So that means its either my RCA or Head unit.

Did number 3, connected my RCAs to his amp, and his car sounds fine. Not my RCAs.

Connected my pioneer headunit and my RCAs to his speakers, his car sounded fine. Not my head unit.

So what the hell is going on in my car?

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[SSS 18734 5,000+ posts]

bad ground, maybe ground loop possibly?

 

[Mr. Opportunist 10+ year member]

rca's near power wire?

 

[SSS 18734 5,000+ posts]

rca's near power wire?

that generally shouldnt be a problem. Although I noticed a slight difference when I re-ran my RCA's to the other side of my car.

 

[Mr. Opportunist 10+ year member]

eh never know sometimes its the little things that you wouldnt expect...

 

[SSS 18734 5,000+ posts]

although he did say when he hooked up his friends amp to his head unit, he didnt get the whine. what amp is it?

 

[Harrison486 10+ year member]

Its a US Acoustics 4065... when I ran the amp off of a friends alpine hu, it was fine...