Can anyone help me with, what I believe, is a ground loop issue. I previously had an amp installed and never had any alternator whine. I just replaced the amp with two separate pieces of gear -- a dsp followed by an amp.
Now I have a whine when I accelerate.
I'm guessing it has something to do with the two units together since I didn't have it before with just the amp... Any help would be much appreciated!
The amp is a JL xd400/4. The dsp is a Memphis 6ix.
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