Originally Posted by joelc73
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.
, on Flickr
You need to physically separate the power lines from the RCA as much as you can. Also, try to make the ground cable as short as possible and connect it to the same ground point as the OEM amp used to be.
-2015 F30 320i, Imperial/Oyster, 8AT: August 2014 ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT: September 2011 ED
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone