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RE: BDT Preamp Schematics

Posted by jkeny on June 14, 2008 at 23:12:40:
Hi Gary,
Yes again, thank you for this inital CCS circuit & your mods to John Swenson's VR variation.

I notice a change to the value of R14 from 27K in JS's schematic to 33K in your schematic but I see no mention of it in the write-up of your mods.

Is this value significant or is it just what was on hand - I think it's purpose is to biase the gates of Q1 & Q2 with at least 20V difference? I presume with 33K the biase differential between these gates will be greater than 20V?