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hi
i have a problem with the sub and the headunit. when running these the sub makes the noises to the sound of the headunit processing a cd ie when its reading a cd. if anyone could help me it would be much appreciated

sounds like its a signal problem. could be caused by a ground loop, or the rca's are ran next to the power wire. they need to be ran on separate sides of the vehicle, and your ground needs to be against bare metal, on the frame of the car, not a screw or thin sheet of metal. try those, and see if that helps. in some cars, its really hard to find a good ground.

I know the sound he is describing. that is a ground loop.

so do i need to find a better ground?

yes, or try using a ground loop isolator.
best bet is a different ground point.

I tried a different ground point yet it continues to do the problem.

Was your system just installed or has it been installed and is just now making noise?

you can try using a noise suppression or ground loop isolator. radio shack carries ser=veral.
the problem may be due to an internal problem with the head unit, too.

KikiTheCat wrote:you can try using a noise suppression or ground loop isolator. radio shack carries ser=veral.
the problem may be due to an internal problem with the head unit, too.

what exactly are those/how do you install them? i have the same problem as him and ive tried numerous times to sand down the ground point and use different screws, heads, etc...i get the same problem.

I had to use a ground loop isolator a long time ago. It pluged right ibetween the deck RCAs and the RCAs to the amp.

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