A few weeks back, I purchased a 1067 receiver from my local dealer. When I hooked it up, I heard a distinct buzzing sound coming from all the tweeters in my system. The buzz was volume dependent, but still quite audible at very low volumes. Since it was coming from all 7 speakers in my setup, it was easily audible at my listening position (about 4 ft. from the surrounds, 6 ft. from the front/center channels). Suspecting a ground loop, I unplugged all components and left only the speakers connected. The buzz remained. I power my whole system through a Monster HTS1000 and SurgeX surge protector, but just in case it was a power problem, I borrowed a Richard Gray 400 from my dealer. That didn't help either. The 1067 uses a two-prong plug, so I couldn't try a cheater plug.
The last remaining culprit was airborne interference working its way into the receiver. David from Ascend Acoustics was helping me troubleshoot the problem, and he had me place my cordless phone close to the receiver; it buzzed and crackled like crazy. Seems like the 1067 has really poor RF shielding.
I dropped off the 1067 at my dealer so he could check it out. His tech claimed to hear nothing. Since I was in the middle of a move, I left it with him until I could hook it up in my new home, thinking that maybe this interference might not exist in my new location.
I hooked it up last night in the new place, and the same buzz is still there. Just what exactly could be causing this buzzing noise? It's driving me insane.
My old Technics receiver is dead silent. It passes the cordless phone test just fine. What's up with the Rotel?
The last remaining culprit was airborne interference working its way into the receiver. David from Ascend Acoustics was helping me troubleshoot the problem, and he had me place my cordless phone close to the receiver; it buzzed and crackled like crazy. Seems like the 1067 has really poor RF shielding.
I dropped off the 1067 at my dealer so he could check it out. His tech claimed to hear nothing. Since I was in the middle of a move, I left it with him until I could hook it up in my new home, thinking that maybe this interference might not exist in my new location.
I hooked it up last night in the new place, and the same buzz is still there. Just what exactly could be causing this buzzing noise? It's driving me insane.
My old Technics receiver is dead silent. It passes the cordless phone test just fine. What's up with the Rotel?
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