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      05-29-2012, 02:37 PM   #623
Drives: 2010 535i
Join Date: Feb 2009
Location: SF, CA

Posts: 82
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Originally Posted by kaigoss69 View Post
Make sure that the RCAs and ground wires are as far away from each other as possible, especially directly at the amp.

Edit: This also goes for the midbass amp, not just the hi/mid amp!!!
That is impossible. The processor, amps, and fused distribution are all crammed into a 14 x 34 amp rack under the rear shelf.

In my experience, alternator whine is related to poor grounds rather than some kind of induced noise. What's odd is that the factory system even had a little noise in it too. It's not unbearable right now.
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