buzz in my sub rotel processor, denon DVD (1 Viewer)

[StanB]

I know this is a shot in the dark but here goes. I had a Denon 5803 amp and a Denon 3910 DVD player. With this set up my sub had no buzz. I decided to go to separates. Now I have a Rotel 1090 amp, and a Rotel 1068 processor, with same Denon DVD player and same sub. Now I get a buzz in my sub. All other speakers are silent (no buzz). The loudness of the buzz is linked to what my DVD player is doing. If it's playing a DVD or CD, the buzz is very slight. But if I stop or pause the player, the buzz gets very loud. If I turn everything on except the DVD player, the sub is silent (no buzz). Having played a DVD, if I power off the DVD player, the buzz will continue in the sub for about 30 seconds then will go silent. I've tried playing with where I plug things in, relative to outlet, to no avail. I'm stumped.

Thanks,

 

[Adam Gregorich]

Is the DVD player plugged into the same outlet as the amp and processor?

 

[StanB]

Yes, everything is plugged into the same outlet.