I am running a 1000w amp for my sub and 500w for the speakers, not to mention a 10 disc changer, wiring for the capacitor, wiring to run the nav, the dvd player... etc etc. In other words I have a metric butt ton of wiring in the back, now it is not consistent but with some CDs and some songs my center channel speaks gives some feedback noise and some speaker feedback, I have made sure all the connections are good and wiring is good the only thing that I can think of is that there is just too many wires too close together providing the feedback I would really like any ideas from people who have done similar systems with a ton of wiring to done.