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Subject: Re: New modules Status

From: "Paul Schreiber" <synth1@...
Date: 1999-05-26

>These all sound great! I'm interested in what your thinking of for both the
>Lag and Divider modules.
>



The clock divider is "funny-looking" as in the simple form, has no pots
(only jacks) and switches.

You have an INput, that is set with a LM311 for 2.4V switchpoint (TTL
compatible). Then, probably
a little Xilinx pre-programmed 44 pin FPGA with symmetrical dividers from 2
to 10. A switch
to set outputs from 0-5V or +-5V (TTL mode or waveform mode). Or I could
get fancy and have
a symm/non-symm function. In non-symm, you get 1 pulse out only at the
divide rate. In symm, you get a 50%
duty cycle square wave at the divide rate.

So, it's like half of a '120 with individual outs.

The circuit is simple: a LM311, the Xilinx part (PLCC in a socket) and 2
quad op amps, 9 jacks, 1 switch. 1U wide.

The lag can be simple or complex, depending on price and the skill of the
designer.

>>Then 2 more filters (Moog and SEM) and THEN work on Baby MOAS Sequencer.
>
>>I am against VC-Q in general because it severly degrades CV feedthrough.
>>I
>>may do
>>Thomas Henry's 3320-based LP/All-pass filter with VC-Q. The CEM chips are
>>trimmed
>>by zener-zap to minimize CV feedthrough, and I have access to 12,000 of
>>them!
>
>
>Bummer! I figgered there was a reason you'd not mentioned VCQ in the past.
>VCQ is really powerful though so I'd like to see you look into the 3320
idea
>-- I've been using some 3320s with their VCQ to great success.



I may have VC-Q on the Moog filter if it doesn't muddy up the sound too
much.

>
>And after all those modules....maybe... the fabulous MOTM Ribbon
>controller????



Errr......don't hold your breath.

Paul S.