I helped a friend setup his new Epic 80-EP600 system this weekend. The receiver is a Denon AVR2807. The problem we have is the EP600 constantly buzzes or hums when there is no source material playing. It seems perfectly fine while watching a dvd. Stop the dvd and the humming begins. The humming even persists while listening to a cable music station.

I tried searching the forums since I figure I can't be the first one with this issue but couldn't find anything (probably searching using the wrong terms).

And before you all ask...

Volume half way or 9 o'clock.
crossover set to bypass.
phase set to 0.
trim set to flat.

Any ideas?


Shag