[sdiy] SSM2044 questions

[R. Drake]

there are 2 PDFs here that might help:

http://www.emulatorarchive.com/AM/AM3000/AM3004/am3004.html

the Polyphony version isn't too different from the data sheet; adds some
circuitry around the resonance input to convert CV inputs to reverse log.

both versions buffer the output, generally a good thing.  i'm not sure a 555
would be all that great for modulation --squarewaves are kind of limited in
usefulness as a modulation source (at least to my ear), and you'd risk
adding a lot of noise to the circuit... i think the lowpower 7555 would be
better in terms of the latter issue.

b

> on 14/10/05 0:23, amokan at amokan at gmail.com wrote:
> 
> I've had some 2044s for a while and keep meaning to build a standalone
> filter box. Nothing fancy, just an in/out and cutoff/res knobs. I've
> looked at the datasheet for the example circuit and I'm trying to
> figure out the best way to power this thing. By all accounts, these
> 
> things will run on +/- 9v, so I could probably do the dual battery
> option but wondered if any of you have done something like this before
> and any ideas you have.
> 
> 
> I'm sure I'll need to amplify the audio input but would I also add some
> 
> sort of amplification on the output? I've also toyed with the idea of a
> simple 555 LFO to modulate things a bit.
> 
> Thanks.
> 
> 
> 
>