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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 2 responses by dynasys

dynasys OP
5 posts
 
Thank you Driver. I will try that. I also just noticed that my lights (overhead) that have a dimmer are making a hum. I have both Brystons on a dedicated power line. I will try disconnecting everything.

Thank you Darrylhifi. I do not have satellite or cable connected.

Any other suggestions?
dynasys OP
5 posts
 
Thank you for all your responses. I have one basic question. THe hum is there even when the lights are out. Could this be caused by the dimmer even if the lights are out? Also, when I disconnect the interconnects from the pre amp the hum is gone (mostly). Could it be the cables I am using?
The B15 actually is on a "cheater" (no ground) but it still has the "Hum". I am not sure (and honestly I doubt) that the electrician that installed the dedicated power lines for the amps also used a separate ground. I will do this if it is necessary. The worst hum is coming from the proceed running the surrounds and center (this amp is not connected to a dedicated power line).
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