Just thought I would share my experiences on this:

Pre empeg, I had a Kenwood 10xCD changer and head unit in the car with a nasty EQ Booster for the front, rear driven from the head unit with a sub from a decent Caliber AMP.

When I put the empeg in I got a terrible whine from the front containing both alternator and digital noise (from the empeg). I thought it was the EQ booster so I replaced it with another AMP. The noise was still there. I was, at this point, thinking the empeg was faulty as I had checked all my cabling.

To cut a long story short I took the AMP back and upgraded it for a different make, problem gone COMPLETELY.

YOu may find that ground loop isolators will help with the noise but I would look closely at the AMP you have in the back.


MK2 Red S/n 949