Dynaco PAS Coupling Cap Values

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Crawfish

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Dynaco PAS Coupling Cap Values
« on: 5 Mar 2010, 08:38 pm »
Hi all -

I'm in the process of rebuilding my PAS-3X and have a couple of questions.

I'm using new PC boards.  Modified PC-6 with the Curcio RIAA mods and bypassed the first .1 uF coupling cap, but was planning to use a 1 uF coupling cap instead of .47 uF for the second one.  Has anyone else gone to that high of a value?  Will I see any motorboating?

Likewise, on PC-5, Joe recommends changing the stage 1 coupling cap from .02 to .47 and the second stage to .47 as well.  Again, I was going to use 1 uF in the second stage, but am now wondering about the first stage.  Should I keep .02, or go up to .22 or .47? 

Thanks for any advice/thoughts.

-Kevin