[sdiy] Polymoog Resonantor Clone PCB preview

David G. Dixon dixon at interchange.ubc.ca
Thu Aug 13 00:33:36 CEST 2009


That is one cool little module.  Anyone who hasn't watched Ken Elhardt's
YouTube video should definitely check it out.  I'm building one of these
(but I'll use my trusty TL07x)!

However, I have some questions:

1.  Has anybody redrawn the schematic by any chance?  The screenshot on the
web is somewhat hard to read.

2.  Are there 10k resistors between the centre taps of the ganged pots?
It's hard to tell what's going on in those little boxes.

3.  Are the values of caps C6 and C7 0.0027uF = 2.7nF?  It's hard to make
out the last digit.

Thanks! 

> On Aug 12, 2009, at 12:37 PM, Tom Wiltshire wrote:
> 
> > suggestion for any builders. Also (Sorry JH) I'd definitely dump the
> > crummy op-amps in favour of something better.
> 
> *admitting my ignorance*
> 
> 1458's?
> 
> I am unfamiliar with these. Is there another point of reference I
> should be thinking of, like are they dual versions of crappy single op
> amp I'd recognize.
> 
> - Aaron
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