SWAH

[fig]

Funkadelphians unite!

I'm calling it The Farnsworth because the dude is as groovy as gravy...wha?

It has a nice sweep, the sensitivity plays well with volume levels.``
I found that biasing the resonance frequency with other controls preset, you can find a sweet spot for a tremolo-shimmer effect. Obviously, not a fasel-ish glow but darned close to my Crybaby mini. If I were to build another I would make it an external control.

I used BC107B instead of the BC550s.
Tested with a DCA55
Q1 hFE = 283
Q2 hFE = 285

Sorry, no sound clips yet.

The "man" is a superimposed image.


Here's the schematic...

 

[peccary]

Good news, everyone!

 

[untamedfrontier]

If anyone needs me I'll be in the Angry Dome.

 

[Elijah-Baley]

Very nice!
I built it on veroboard (with the external bias pot). It's fine, but my decay pot does nothing.

 

[fig]

Very nice!
I built it on veroboard (with the external bias pot). It's fine, but my decay pot does nothing.

Thanks!
Double-check that you used a 4k7 just before the decay pot. It's easy to grab a 47k by mistake.

 

[Paradox916]

Thanks!
Double-check that you used a 4k7 just before the decay pot. It's easy to grab a 47k by mistake.

I have done that a least twice on different builds...

 

[fig]

Yeah, I was speaking from experience for sure!

 

[Mcknib]

Very nice indeed

But........

no laser canon?

 

[Barry]

Nice build!

 

[Elijah-Baley]

Thanks!
Double-check that you used a 4k7 just before the decay pot. It's easy to grab a 47k by mistake.

I guess it was right, I tried even to replace it with a 47R, because some schematic has it, like the 4.7k was a mistake, but it sounds wrong or something, I don't remember. I checked it a lot of time when I built it some years ago.

 

[Feral Feline]

"Another job well done, Fig"