[sdiy] Buchla Lowpass Gate Switch

[Fernando de Izuzquiza]

Peter, it would be great to see the schematic of your LPG version B 
with that inverted phase feedback and what FET did you used.
Your description sounds very interesting.

How the version B sounds respect to the C version? You said more 
resonant, can you say a bit more about please?

Fernando




> De: Peter Grenader <peter at buzzclick-music.com>
> Fecha: Wed, 11 Aug 2004 21:22:24 -0700
> Para: mark verbos <mverbos at earthlink.net>, synth diy 
> <synth-diy at dropmix.xs4all.nl>
> Asunto: Re: [sdiy] Buchla Lowpass Gate Switch
>
> I might add that I didn't use single vac's on the rev Bs I've made, but
> opted for the same single 3/2 dual element used in the rev c.  I did 
> this
> for cost reason's only.  As far as the performance, the sonic 
> characteristic
> of the two, the only differences I can hear is slightly less gain in
> amplitude operation and a bit more resonance in lowpass mode, which I 
> assume
> comes from the  properties of the FET.
>
> In any event, the rev B's FET allowed for the additional bleed-killing
> inverted feedback I added, I haven't been able to do this with the rev 
> c.
>
> - P


Fernando de Izuzquiza
~ location sound recordist ~