AW: Minimoog Vcf

[boldman at interplanet.it]

>Well, I'm not from the Moog Olymp, but I have built my MidiMini
>from the original Minimoog schemos (the VCF part, that is),
>and it works.
>There is good reason the R6, C9 filter for the left side of the
>differential amp, because the filter output signal is related to the
>positive supply, and not to GND. The right part of the differential
>amp has no output, so connecting it directly to the dirty +10V
>is ok. Therefore I think the schemos are right.
>
>Just my opinion - never looked into a real Minimoog.
>
>JH.

Hi, riccardo here.
I am not into the olympus too, but I also have built a minimoog copying the
original boards (it was not really only me, I just did the research on the
components and do the wiring and solderings).
A question, how did you solve the problem with the C type pot?
(if I understand well it is an inverted logarithmic, I only found linear
or logarithmic pots. I did it with a stereo logarithmic pot using a so
strange wiring that I cannot remember right now. It works correclty but
does not reproduce the original sensitivity of the control, wich in a
certain way
is not too bad)

ciao
riccardo