If the amp is 5 years or older... a lot of the times is a capacitor or tube ageing. If you have restacked your components, the power from one may interfere with the other component if they aren't shielded from one another. Move any electrical devices away from the amp one by one to see if one of those resolves the problem. Some older amps who had wooden cases had a metal cover below to shield the electronics from florescent lights which caused buzzing in the speakers If none of that helps, locate a dumpster near your house. oh... make sure the positive speaker wire wasn't accidently connected to the negative.
Hum in speakers, and suggestions for stopping it
Hi, everyone.
Any success stories in scenarios similar to mine, described below? Grounding boxes? Outlet upgrades? Gadgets like the Morely Hum Exterminator (née Ebtech Hum X)? I’m looking for a non-invasive solution (e.g., not getting a dedicated line into the room).
The situation: I had each of my PS Audio M700 amplifiers plugged in to a Stellar PowerPlant 3. The system sounded great, but I knew I'd likely get better sound with the M700s in the wall outlet. I made the switch and there was a huge improvement -- so I want to keep this configuration.
However, there's now a hum in the speakers. Given that there was no hum with the M700s in the PowerPlant 3, I think it's safe to assume the problem is the wall outlet. I can't hear the hum 99.5 percent of the time when music's playing, but ... well, you know.
"My" electrician came out yesterday and said doing a dedicated line to the outlet would entail demolition and/or other options that aren't feasible right now.
Thanks much!