MOTM

At 8:40 PM +0000 5/14/03, mate_stubb wrote:
>Just curious:
>
>Do people really need more snappy attack times than the stock 800
>offers? I find that I have to back the attack time off to keep from
>popping a VCA, especially if using the exp response of the 190. And
>since I can get a satisfying 'knock' sound when sweeping a filter
>with no attack, no decay, why would you need something faster?

That's a good question :)

While I think there are times when you want a barn door that is as
close to the rising edge of a square wave as possible, and decreasing
the value of C9 will get you closer to that, it will also give a much
finer knob control within the snappy range.  Like most EG's, 90% of
the attack knob's rotation is useless for percussive sounds.  With a
knob range intended for a more specific purpose, it should be easier
to design fast transients and take advantage of the various VCA's the MOTM
system has to offer.

At 9:23 PM +0000 5/14/03, paulhaneberg wrote:
>The 800 uses a Panasonic SU series Bipolar 'Lytic.  The Digikey part
># is P1198 for 3.3M, P1196 for 1M and P1280 for 10M.

Hmmm.... Paul S. sent me an email stating a leakage current spec much
better than the Panasonic SU, but he said that they were OK to use.

Here is a Xicon cap in the Mouser catalog that might work:
"Non-Polarized Electrolytics"
Leakage current  I=0.02CV=3uA max
50V 6.8uF  10%    140NPRL50V6.8

>I would have the 1M in circuit at all times.  With the toggle in
>upper position a 3.3M would be in parallel with the 1M for 4.3M.
>With the toggle in lower position a 10M would be in parallel with the
>1M for 11M.  I might consider trying a 22M just to see what it is
>like.

Just like you are considering a smaller value than 1uF to make more
of a difference, I'm considering 22uF for the same reason.  I'm also
considering the Xicon 15uF 50V NPRL (which I'm guessing means "Non
Polar Radial Lytic")