FSH1 S/H Speed

[captntasty]

Well after days of intensive work and debugging (I took a couple days away and boy did it help) this bad boy is up and running!   This is the tonepad version http://tonepad.com/project.asp?id=50 .  I could probably ask a thousand questions on this one but only one thing really stands out - I'd like a slower sample/hold speed.  Looking at the schematic I'm wondering if changing either the 180k off the speed pot or the 3k3 off Diode 1 would do that.  I really don't have the electronics chops to talk about it intelligently and I wonder if someone would be kind enough to fill me in on what's affecting the speed and if it's possible to get slower speeds.
Thnx

[jrc4558]

Hi!
With me it happened like this: I didn't have a 1MB potentiometer, so I used 500kB and increased the value of the capacitor to 0.68uF. I guess is you want slower times, then try 0.47 and work your way up in values until you find a suitable range. Good luck!
ps: btw, do you hear the S&H ticking when in envelope filter mode? I do and its the only thing that keeps me from using the pedal onstage...

[captntasty]

Yep...  I know there are a few fixes out there on the board and I'll probably try them at some point.  But, I'm having too much fun with it right now just trying different trannys and whatnot now that it works.  There are a few issues in mine that need to be fine-tuned but I can live with them for now.  Are you referring to the .33uf cap off IC3 pin 3?  Yeah, couldn't be any other, huh?  I only have a 1uf poly cap - I'll throw it in there and see....

[captntasty]

Nice call Constantin   That did the trick!  I tried 1uf but that was way to slooooooooow....  so I soldered a .47uf and .22uf together, put this (.69uf) and .33uf on either side of a DPDT switch and...... Voila!  Slow/Fast switch - highly recommend it!  Man, am I psyched!
The lowest and highest speed settings are a sorta useless but everything in between is sweet!  This thing is one hell of a knob twiddler - so many different sounds.

I'd love to (probably will) record some sound samples soon.
Can't thank you enough for the tip!
Capn 

[jrc4558]

No problem! I'm glad it worked.