[sdiy] Re: Moog ADSR

[Colin Fraser]

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Gene Stopp
> Sent: 26 September 2001 17:11
> To: synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] Re: Moog ADSR
>
>
> It's really a quite pronounced effect on my Mini, with the
> controls set
> properly I can probably get over two octaves of VCF
> "opening".

I've just been trying this out on my mini (RAM #1032).
Can't say I'd ever noticed before, but with the decay set to 7 or 8 seconds,
repeatedly hitting a key builds up the envelope peak level a good couple of
octaves above normal.
Great. Now I need to get the schematics out and work out why ;-)

> Perhaps it
> has something to do with the fact that my machine is a really
> really old
> model D. I forget the serial number but I've looked it up
> before. There's
> not a single IC in the whole thing, all transistors. I've
> noticed that these
> old ones have slightly different panel markings than the
> later ones - for
> example, on the VCO fine tune knobs for oscillators 2 and 3,
> all of the
> numbers are there (-5, -4, -3, -2, -1, 0, 1, 2, etc.) instead
> of every other
> one, and around the attack and decay knobs on the EG's all of the
> millisecond markings are there instead of just some of them.
> Anyone else
> ever notice this?

Yep.

Colin f