Re: el34

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Posted by metasonix [ 69.106.57.3 ] on July 25, 2004 at 21:35:52:

In Reply to: Re: el34 posted by Wayne Parham on July 25, 2004 at 20:09:01:

It is not a fixed ratio. 6550s need about 20-50% more negative bias voltage than EL34s in the same circuit. Depends on plate voltage, screen voltage and even the brands of tubes involved.



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