[sdiy] Vactrols & Lopass Gates

[Jay]

A case of bargain surplus parts, perhaps?


Peter Grenader wrote:
> Mark -
> 
> Have a look at the Buchla's schematic B2420B.  It's the one from the CBS
> system.  Note the switch symbol - two contacts -- dual switch.  The top one
> shorts out the filter, the bottom one kills the feedback.  There is no
> connection shown for a third center position.  The off (center) keeps the
> filter going but kills the feedback thru the FET.  There is a marketable
> sonic difference between the center and down (LP) positions.
> 
> Try it with a standard double pole triple throw.
> 
> 
> mark verbos wrote:
> 
> 
>>The Buchla 292B uses a C&K 7211 On-ON-ON switch. I am sorry, but it's a
>>fact. I have built them all as well. 
> 
> 
>