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Old 8th December 2006, 08:13 PM   #1
Jaap is offline Jaap  Netherlands
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Default S11E12 / 12E1: best operating point ?

I want to make a PP pentode amp (regulated screen supply 290 volt). B+ somewhere between 350 en 400 volt. Is there any sweet spot ?
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Old 9th December 2006, 02:29 AM   #2
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I have some of those monsters I played with in SE.

Anything above 300V plate. I find they aren't a low B+, highish current tube at all for sound.
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