chance

I have an amp and woofer in the back of my car. For some reason I can hear the cd player loading through the speaker. It's pretty loud. I called my local shop, but they said I need to bring it in. I dont want to pay them 50$ for something I might be able to fix on my own. any help?

jonjon42

you can hear the player loading? wow that must be loud..you can try some insulation around the cd player (I assume the 6cd changer magazine) but other then that you may need to take it in;.

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A damn dirty hippie without the dirty part....

chance

It's weird...it only goes to my subwoofers. When I load a cd, and change a song you can here the motor working loudly in my subwoofer.
It's not a 6 cd changer, just a normal aftermarket (pioneer) cd player.

Nelson

Sounds like a poor ground on the head unit, amplifier and/or (most likely) a bad RCA cable.

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Nelson

skaven

Yeah I agree with Nelson. Proper grounding in a car stereo system can be a biatch to get perfect. All it takes is an ohm or two of extra resistance on your ground lead and you start getting all kinds of weird sounds in your system. The reason you're probably only hearing it in your subs is because your subs are the only speakers affected by a ground-loop problem. Your surround speakers are driven by the head unit, which most likely has ground-loop isolation circuitry built in.

As an experiment, first try a new RCA cable. If that doesn't fix it, try grounding the outer ring of your RCA cable, i.e. strip a wire and hold one side to the "outside" ring of the RCA cable, and the other side to a good ground in the car. If that still doesn't fix it, try disconnecting the ground cable on your amp and insulate the entire amp (don't let any part of the chassis touch metal in the car). Then run a temporary ground wire directly from the battery to the ground on the amp. If this STILL hasn't fixed the problem, the final thing to try is a ground-loop isolator (you can get them for ~$10 at most car audio shops). It plugs inline on your RCAs and will most likely fix the problem.

chance

Thanks a lot for the great help. I will try that out and hopefully fix it. Thanks again.

yeagbltz86

If your RCA cable and your Amp power wire are run close to each other it could also be adding to the problem. This tends to happen no matter how expensive your rca cables are, so if the above doesn't help, try running the RCA cables on the opposite side of the car.

jujueye

Nelson's on it. You are likely not hearing the actual CD changer, but a grounding noise.

Nelson

Wrong - thats an old wives tail - started by someone that didnt know how to find the real weak link in their chain LOL.

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Nelson

chance

Well, the problem seems to be spreading. When i push the window buttons, i hear a pop. When i hit the brake, i hear a pop. I now can hear the engine noise. When i turn on the blinkers i hear the pop. I guess it must be a ground. Thanks for the input.