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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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In Reply to: Can you comment on this schematic ? posted by akltam on October 1, 2003 at 06:31:23:
That's close to my 6b4g PP.With low-mu driver tubes (10) and low-mu output tubes (4) I still have excessive gain - and it seems that your circuit will have unacceptably high gain, unless there are lots of feedback - but most likely, you can't have IT's and feedback together. I suspect a single-stage driver is more appropriate for output pentodes.
Maybe I'm a poor tweaker, but a two-stage 6N30P+LL1660SE driver like this was quite disappointing. Two-stage triode-strapped EL84 (Reflector) was way better but still below directly-heated tubes.
May I also recommend you replacing first stage cathode R and C with a grid battery (see schematics). It's the second best tweak after battery power.
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Follow Ups
- Re: Can you comment on this schematic ? - klaus 04:03:41 10/02/03 (2)
- Re: Can you comment on this schematic ? - klaus 04:12:58 10/02/03 (1)
- Re: Can you comment on this schematic ? - akltam 07:26:38 10/02/03 (0)
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