i have a panasonic dvd player , audio control 6xs xover which goes to rf power 851x 4 channel amp.
when car is running i get whine in speakers..now i replaced dvd player with exact same model and still had noise..took iPod to the xover and still had noise so i figured it wasnt rcas since i still get whine from xover. i did big 3 with 0 gauge and all wire from front to back is 0 gauge it got dark so i didnt have time to plug ipod directly into amp i will tomorrow tho. all testing today was done with car on but i did try it with car off and ipod in xover and no noise so im guessing its def a ground in trunk . i have ask this before but didnt have time to test anything, i am going to check directly from amp tomorrow as well as double checking everything with car on and off. my only prob is that it is incredibly hard to get to the 3 batteries in spare tire well. can i just add a ground temporarily to the 4channel to see if it helps? very very sorry for re posting but i am so lost on this right now and dont want to destroy anything due to the loud whine thank yo u for all your help