just installed my 4 mid ranges speakers to my high level speaker-input 4 channel-amp. I am using stock head-unit. Here's the problem: I have such a irritating whining noise coming from the speakers, and the noise pitch het higher and louder when I accelerated. My installer told me there's no way to fix this. He said some amp created that noise. I don't believe this. I talked to a different installer and he said the high level input connection may have created that noise. He suggested using the "step down" converter or is it RCA converter? Any one with a problem like mine? Any suggestions would greatly be appreciated. If I used the RCA converter, do I hook them up behind the head unit or on the rear speakers? Thanks guy!

 

Do you have a woman in the back? My wife always whines more when I go faster...

Sorry ladies.. Just kidding!

Now, I don't have that problem on my truck, but I have had it in past on another vehicle. It's really just simple wiring and isolation at the root.. Doesn't seem simple now, but it probably will when you fix it...

First off, your isolator on the alternator should be preventing this from happening. Maybe it is, maybe it isn't, but I'll press on...

You might want to check on putting on one of those magnetic isolators on the inputs and move your leads to the amp to a different area. They may be too close to other hot wires.. Another thing, sometimes a poor ground can be a culprit and direct wiring to the battery (if not already done) is always recommended.

It can really be a number of things, Daveman is quite a wiring guru, maybe he can shed more light...

Later,
Chris