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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:
Hello. Can anyone comment?? Here is a no-brainer starter for you:ONE MEG (as the input grid to ground) is too high and not good. It "uncenters" the input stage's operation.
Start at 100 K Ohms and if you want to parallel high value R's across it to go lower, you may do so, judging by EAR, the best final value. Or, if not willing to do this, just change 1M to a 100 K.
I'd personally TRY a pair of grid stoppers on the 5687. Use 220 ohms as a starter and you can easily trim that lower a bit, BY EAR. Usually its above 206 ohms.
Also, one K ohm may be a bit too LOW of a value on the 6550's as grid stoppers. I's start at 2.2K and trim lower BY EAR.
Kevin will give you input on the more important stuff, I am sure.
Jeff Medwin
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- Re: Can you comment on this schematic ? - drlowmu 10:47:21 10/01/03 (0)
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