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In Reply to: RE: Tube amp help posted by SteveBrown on April 29, 2015 at 20:14:09
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Have Fun and Enjoy the Music
"Still Working the Problem"
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I completely agree. Separate, shared, O/P tube RC bias networks (1 network/ channel) is THE way to go.
Suitable matched pairs are not that difficult to come up with. Matched quads are a more costly, problematic, proposition. The shared network in each channel compensates for minor differences in cathode current. :> ) Get gm very close (always a requirement), along with reasonable closeness in cathode current, and you have a suitable matched pair.
Eli D.
Thanks for all of the help.
I was able to solve the problem by checking the connections for the .047 cap. I moved the cap around a bit and the wire broke off at one of the solder connections. It is a solid wire which while still intact was, in fact, not connected in the circuit. The amp in working fine after making the repair.
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Have Fun and Enjoy the Music
"Still Working the Problem"
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