A few months back, I was running my comps and subs off of an old school sony four channel amp with no problems. I eventually switched it out for two mtx 2 channel amps and now I have alternator whine. I'm using the exact same wires I was using before except for an extra power and ground wire for the new amp. I cannot figure out how this whine has developed.
Is there any way that a different amp could cause this problem?
My amp grounds are both very good, but my hu is using the stock ground. I still don't see how this is a problem though because before I had no whine whatsoever.
Can anyone make any sense of this?
I plan on regrounding my hu soon, but I doubt that will help.