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AW: [Doepfer_a100] diy synth vca: ac or dc coupled?

2011-04-11 by yahoo@doepfer.de

> hi group,
>
> long time no see :) been busy emigrating to new zealand (and
> despite a pretty loud crashing falling-from-a-great-height noise,
> all modules are still working). anyone here from auckland?
>
> but, to business:
>
> will the diy synth vca work for control signals or only for
> audio? i'm thinking of wiring the whole "synth" as the filter of
> my dreams (without patch cables), and envelope controlled lfo
> depth is part of that.
>
> i'd also be interested to know where in the circuit the resonance
> feedback is injected. that's probably one for dieter, or is the
> schematic out there somewhere?
>
> thanks,
>
> stuart

I'm back from the busy and exhausting Musikmesse :-)

The VCA of the DIY Synth is DC coupled. The feedback goes from the bandpass
output to the audio input (to the non-inverting input of the first
operational amplifier of the VCF circuit).

Best wishes
Dieter Doepfer

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