Minimoog VCF

[Andrew Schrock]

On Wed, 10 Mar 1999, Terry Michaels wrote:
> I have seen several reports that the Minimoog filter circuit available on
> the web contains errors. Does anyone know if this is really true?  I have a
> good print of the Minimoog schematics I got directly from Moog, if anyone
> is willing to host the filter circuit on their web site, I will scan it and
> email it to you.  That should put to rest the "Minimoog filter circuit with
> errors" problem once and for all.
> 
> Unless, of course, the reports of circuits containing errors only apply  to
> Minimoog filter clones.

I know personally I've tried twice to get a moog LP filter clone working..
both times the same transistor ladder version. The first time I ended up
giving up, the second time I gave up due to it not sounding so hot. (no
bass! although now I have a feeling it was due to the caps I was using.) 

They're very finic-y circuits IMO. Not beginners stuff. I know because
when I was a beginner I tried and failed. 

Tony Allgoods moog filter works well. The one on Tomg's site is also fine.
Both are very similar to most of the transistor ladders I've seen floating
around... 

later
Andrew

-| Andrew Schrock | aschrock at cs.brandeis.edu |-