Archive of the former Yahoo!Groups mailing list: Modular Synth Panels

Hi synth panelers,
I've been working through my 'backlog' of cgs modules. My recent
completion (with a lot of great assistance from Ken Stone) is the cgs vco.
I've uploaded a Schaeffer semi-motm 3U style panel to the
ModularSynthPanels yahoo groups site under Files, Cat Girl Synth Designs,
Schaeffer file: cgs.vco3U.4row.fpd.

Basically the panel contains every function from the pcb except a second
cv in, and it contains attenuators for FM AC, FM DC, PWM, SUB CV IN and
SHAPE CV IN. Note that the pot holes are smaller than those for Spectrol
or Bournes pots (I decided to use up some of my Alpha pots). The design
also has a FINE Tune pot location.

In a 3U standard motm design I would have lost an output or input
(excepting the 2nd cv in), so I decided to use my 4 row style (that is,
standard motm style has a total of 8 rows of sockets vertically, but as
Tony Allgood has shown us with the 410 filter companion, one can easily
fit in 9 rows and still retain good spacing for inserting jacks), since
the standard motm socket spacing would have required 4U (which I was not
willing to do). Adding in the 4th row increased the number of sockets
beyond what I needed, hence the additional 1v/oct input (3 1v/oct inputs
should prove interesting) was added.

IMHO This is a nice companion vco to the motm and Blacet vcos that I
already have (for example, I was after somewhat different waveforms).
However, I haven't nailed down the subosc section yet.

Constructive comments appreciated, Jeff