[sdiy] [SDIY] Faster Enveloppe Mod for Sixtrack ?

[Frédéric Bourgeais]

Hi all,

A friend who own a SCI sixTrack, wish faster Attack to control the output
VCA.

I took a look to schematics available here:
http://www.geocities.com/SoHo/2163/ST_schem/

And CEM 3394 datasheet here :
http://www.synthtech.com/cem/c3394pdf.pdf

3394's Pin 18 is used to control the Final Gain CV, but unfortunalty
Enveloppes are CPU generated, so it's not easiest as swapping a capacitor
to a smaller one with good old analogue synths...

Is there a last chance for faster CV, simply playing on caps or resistor
values on the input of the 6 sixtrack's 3394 (such C171,R136,C169 on U131
pin 18 here: http://www.geocities.com/SoHo/2163/ST_schem/st_b1.gif )

Does these componants are used to smooth the Enveloppe CV ( a bit like a
glide ? )

Thanks for your help
Fred