Sounds like you make have some transformer hum, a very common problem without a single/simple solution, and which poses no real problem for you if you can't hear it from the listening position. Could be the transformer has become loose, could be caused by the the incoming current, etc. You could lift the lid (after a long turn off so the amp is tatally discharged) and check the connections of the transformers to the amp frame and or your could mass load the transformers/amp lids to reduce the resonance. You could also borrow a power conditioner to see if that would help. Hope that helps........
My Belles 150 is buzzing when I turn it on..
Is this normal? I just bought this amp used from someone, and although I don't have speakers yet, I've tried turning it on and what I hear is a vibrating/buzzing noise right when I turn it on. The noise then gets quieter, but remains constant.
I don't think this is normal, but I want to check with you guys before I take this up w/the seller.
I don't think this is normal, but I want to check with you guys before I take this up w/the seller.