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In Reply to: Re: GE 6CA7 - Can't bias tube low enough posted by Jim McShane on April 13, 2007 at 06:25:19:
Hi Jim:I agree, the tube specs don't indicate that. But in my experience, generally, the 6CA7's have been hotter, requiring more neg bias than EL34's, regardless of brand or batch.
Please correct me if I'm wrong, but is not the 6CA7 a beam power tube, and the EL34 a true pentode?
Perhaps that would explain the difference?
Al
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- Re: GE 6CA7 - Can't bias tube low enough - Alpha Al 20:33:38 04/14/07 (0)