Loud Hum


I recently bought two Brystons 7Bst's to power my Revel Salons. I also have a Bryston 1.7 and I am getting a LOUD hum from ALL speakers (I run the center and rears with a Proceed HPA 3 while I purchase other 7BST's). The Proceed did not make the HUM while I was using it to power the two Salons and center channel, but now that I am using it to power the center and surrounds it is VERY loud. My Revel B 15 ALSO has the HUM (although not so loud).

Any suggtestions?

Thank you!
dynasys

Showing 1 response by bigtee

Just a quick question about isolated circuits. If you run the ground to a point outside the AC panel, I can understand that. But, since the neutrals of the circuit have to be connected to the same common ground(neutral buss, both ground and neutral go here) buss in the panel, how are you isolating the circuit from the same noise that might ride in on the ground and keep it off the neutral?