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Lamm ML2.1 popping noise?

Please help! The left channel has developed one or two popping noise coming form the speaker at times, not too loud but frightens me! I checked the bias of the output tubes and it is 0.34v with music. I that too high! Have anyone had this problems before? thanks.
luna

Showing 1 response by syntax

syntax's avatar
syntax
2,193 posts
 
Hi Luna,

my ML2.1 run line a Swiss watch, never had such a Problem,. But reduce the bias to 0.29-0.31 without music (0.31 is the maximum).
But it can be possible that one of the tubes is going weak...
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