[sdiy] Oberheim OB-Mx schematics and ROM dumps now up

harrybissell harrybissell at prodigy.net
Mon Mar 20 07:00:05 CET 2006


Is it just me... or do the 22M resistors in the SVF filter
here seem a little strange.

I know that you can DC stabilize an integrator with such a
configuration... but for a synth it seems VERY strange to do
this.  Maybe its a cheap bug fix ???

Also, the .1uF caps in the ladder seem really large to
me.  The only time I've seen caps that big is (iirc)
the Taurus ladder filter.

Contrast the ARP ladder or other Moog ladders which use caps
at least 1/3 to 1/10 the value ???

H^) harry

Aaron Lanterman wrote:
> 
> users.ece.gatech.edu/~lanterma/obmx
> 
> if you have more info to share, please do...
> 
> - Aaron



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