Hey guys
Sorry if this has already been asked. Anyways i just got my Amp and 6" 3 ways installed in the rear, but what i am noticing is sometimes i can hear a whistling that goes louder and softer with the engine revs? What is this? and how do i stop it?

Thanks

Move your RCA cables to the opposite side of your car away from the power cables that feed your amp. I also noticed it is wise to play around a bit with how to route the RCA cables out from your head deck. Just move them around with your car running and volume down on your deck. You should be able to find a location that doesn't exhibit the same problems for you.

Or you could spend a fortune buying stinger RCA leads etc.