[sdiy] Moog VCF question

[Paul Schreiber]

These resistors have *nothing* to do with the audio path. They set up a 
voltage divider string to keep the transistors in the active region.

They can be anything from 100ohms to 100K :)

Paul S.

----- Original Message ----- 
From: "cs e" <modulemania at gmail.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, July 29, 2008 12:31 PM
Subject: [sdiy] Moog VCF question


>I was looking at the schematics of the MG-1 and the Rogue VCFs.  They
> are very similar and both run off of +12V (at the top).  The main
> difference between the two designs is the resistors on the "side" of
> the schematic - running along the ladder.
>
> In the Rogue, these resistors are 1k - but in the MG-1 these resistors
> are 200 Ohm.
>
> The (DC?) voltages up the ladder are the same (3.4, 5.4, 7.4, 9.4) in
> both, so I assume that the resistors do something with current.
>
> Any insight or comments on the electronic and sonic differences?
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