ARP Moog schemos, pots missing

Martin Czech martin.czech at intermetall.de
Wed Mar 10 09:35:00 CET 1999


Yesterday I tryed to keep up with all the schemos I have.  Bought folders
etc, now I discovered that the ARP schemos from J. Verghese and the
Minimoog filter seem not to have pots and trim pots.  This way the circuits
won't work.

http://www.netcontrol.fi/~jocke/arptech/

I'm refering to the 4023 and the 4075 filter.The 
packed 40235S1.GIF and 40235S2.GIF give a hint,
but no more.

Could anyone please give me a hint for the correct values
and connections?

Also, my minimoog filter schematic has no resonance
pot. 

http://www.hyperreal.org/music/machines/manufacturers/Moog/MiniMoog/schematics/minifilt.gif

I guess the output is at node 7 (emphasis), this must be also the point to
connect the resonance pot. Node 6 must be the pot slider.



I could find a solution for all the filters via experiment,
but I'd really like to have it the original way.



m.c.





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