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1st November 2009, 11:13 PM
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#1 |
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diyAudio Member
Join Date: Oct 2007
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6L6 PP problem
I have some noise issues with a 4 6L6 power amp, similar to blocking distortion, but this noise appears at half power (about 50 or 60W), even without signal. Tubes aren't matched, and 3 of them are quite old, one is new. Could be a tube mismatching problem?
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2nd November 2009, 09:45 AM
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#3 |
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diyAudio Member
Join Date: Sep 2003
Location: Alps:Tube amp designs over 150W, SMPS guru.
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More info S.V.P. Since history is unknown, changing all the tubes may be a good idea.
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