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Monoblock disadvantage or...?

My friend has QuickSilver M60 tube monos(2 x 12au7 input and 4 x EL34 out tubes).
When I bring my ear to each of the speakers one speaker has bigger hum of 60Hz than the other.
The hum though isn't audiable from the listenable distance.
I've hooked them up with different sets of interconnects but the hum difference was still present.
What I might want to check and how?
marakanetz

Showing 1 response by clueless

clueless
763 posts
 
Marakanetz, could be lots of stuff. Do a search at the Asylum if you haven't already. There is a lot of discussion there about hum and how to track it down. No sense reinventing the wheel here. That site has way more techies on it too.

Sincerely, I remain
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