[sdiy] Buchla vactrol-based morphing/crossfade/panning

[Tim Stinchcombe]

Hi list,

I'm trying to track down the source circuits these two have come from, as
they appear to be edited-down Buchla schematics:

http://www.simple-answer.com/vac-crossfader.jpg

http://www.simple-answer.com/vac-panner.jpg

(Both from Mark Verbos's site:
http://www.simple-answer.com/DIY.html)

There are similarities with the 207 mixer (at Kevin Lightner's site):

http://www.synthfool.com/docs/Buchla/

but I'm kind of thinking there are more Buchla circuits out there doing
similar things with vactrols, which I'd like to find out about - can anyone
point me in the right direction?

Thanks in advance,
	Tim
__________________________________________________________
Tim Stinchcombe 

Cheltenham, Glos, UK
email: tim102 at tstinchcombe.freeserve.co.uk
www.timstinchcombe.co.uk