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Ground loop/power conditioner question

Ok, I'm coming to the end (or just beginning?) of my audio obsession. I've progressed over the past year from building a home theater with existing components to new components and speakers, to a small bedroom home theater (with leftover pieces), to a dedicated 2 channel system, to outboard amps for the theater. Anyway, I just purchased an Acurus A200x3 to finish off the center and rears of my theater. It had an annoying buzz, which really concerned me. I did some research, and also contacted the previous owner. Both led me to a "cheater plug". Amazing that an amp can go from an annoying buzz you can hear from the listening position, to DEAD silence with a cheater plug.

Ok, so not the OCD takes over. The Carver M-500 that runs the front L&R has an extremely low level buzz that you can hear when you bend down and put your ear to the tweeter. After reading up on the ground loop issues, I reversed the plug, and found one way is quieter than the other, but no DEAD silent. Is this something I just have to know is there, since I can't hear it from the listening position, or is there a solution? My 2 channel isn't as simple. The Carver TFM-45 amp/CT-6 pre has a buzz that is noticeable if you are close to the speaker. (ie: not bending over with your ear to the tweeter) It's a little newer than the M-500, and has a 2 pronged polarized plug that I can't reverse in the outlet. Again, any ideas to lower/eliminate the buzz? Power conditioner? All of these amps are on the same circuit (dedicated outlet for equip), but not the same outlet. My lights are on a seperate circuit. Oh, and both Carver amps were refurbed/recapped.

Any ideas or suggestions would be greatly appreciated.


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Topic - Ground loop/power conditioner question - 70chevelle 06:19:07 03/28/08 (2)

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