Can any1 help. I have 2 sets of 6x 9's that run off 2 seperate amps, however i am getting alot of interfearence when they car is started. You can hear a kind of whistling noise, and the more you rev it the louder the noise will go. Someone has told me that it's because the power to my amps is run down the side of the car right next to the speaker wires? Also someone suggested that it is the alternator causing the problem? Can any1 point me in the right direction with how to sort this out because it really pisses me off at the moment!