[sdiy] Vactrols & Lopass Gates

[Peter Grenader]

Maybe - but this isn't a triple switch shown of the CBS print!

- P


Jay wrote:

> 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.
>> 
>> 
>> 
>