Hi Ryan!

Glad you like my mods! I did try using a pot to control the discharge
off the ground end of the capacitors, but there was no adjustment, it
was either full on or full off, although that was using a single pot.
I joined the capacitor negatives together to form a common negative,
then put the pot in between that and gnd. I will try the other side
of the caps, although, like you said, I'll need a 4-gang pot to do
this. Incidentally, they can be got from here:

http://www.alphapotentiometers.net/html/8mm_pot_4.html

If you were to put a pot in parallel to the capacitor for decay
control, how would you stop the CV signal shorting out to gnd at low
ohms values?

Re: separate outs - already done it! I'm cooking up a SK Stereo Mod
based on them. Basically, outputs 1 and 3 go to the L side of a
stereo mini-jack, 2 and 4 go to the R side. Since the SK voice
assignment is dynamically allocated, each voice moves L and R each
time you hit the same note. When playing chords, you get a really
cool stereo swirling image!

You can also control the stereo image "width" if you put a dual pot
parallel with the junctions where the 2 voices on each side meet, but
have one side with the pot operating the opposite way. You then send
the output sides of the pots to the opposite jack outputs - you
basically control the signal "crossover" bleed from each side.

Cheers, graham



--- In CasioSK@yahoogroups.com, "plutoniq9" <Plutonique9@...> wrote:
>
> Sweet! So simple too. Definetley looks like one worth doing,
> esppecially the attack envelopes are pathetic on the SK.
>
> I can already think of a couple of improvements based on
modifications
> I've done on X0X drum machines (606, 808 etc.). They also use simple
> capactitor envelopes for some of their sounds......
>
> If you add a variable resistor (i.e 2Meg pot) in parallel with the
> capacitors, this should allow you to control the decay rate (or
> discharge rate) of the capacitors. It is very effective. I've also
got
> a feeling that if you put a pot in between the CV and the capacitor,
> you should be able to control the attack rate. You'd have to
> experiment with what capacitor and potentiometer combos work best,
but
> it would give a variable control over them. Of course, I think they
> only make dual (stereo) pots, so you'd need at least 4 to control
> attack/decay for all four voices.
>
> ANyways, sounds exciting. Are you planning on adding individual outs
> for the four voices, they are just begging for indi outs and it
looks
> easy to do from the schematics.
>
> seeya
>
> ryan
>
> --- In CasioSK@yahoogroups.com, "gmeredith1" <gmeredith1@> wrote:
> >
> > Hi everybody!
> >
> > I've just uploaded the first in a series of new mods for the SK5
and
> > SK8 into the FILES section on this site!
> >
> > This first mod is called the "Slo-A/D" mod.
> >
> > It enables you to change the attack and decay rates of any preset
and
> > sample sound to a slower attack and decay. The result of this is
to
> > turn the original preset standard sounds into some amazing synth
pad
> > sounds!
> >
> > The violin and trumpet now sound like classic analog string
sounds, the
> > piano and guitar sound like nothing else, the organ and celeste
are now
> > stunning glassy DX7 "ghost" pads! Try it out on the surf and lion
> > sounds he he!
> >
> > You can also apply it to any of the sampled sounds, in addition
to
> > their own selectable A/D envelopes, to get even longer attacks
and
> > decays!
> >
> > Enjoy, and keep a lookout for more of my mods coming very soon
here!
> >
> > Cheers, Graham
> >
>