MuthaFunker Auto wah

[Kipper4]

As a follow up on my recent thread regarding the Sabrotone svf.
Here's a quick demo of the MuthaFunker.

[Kipper4]

Oh and not forgetting the help I had from Stephen (D.A.) with the rectifier biasing. Thanks for that.

[rutabaga bob]

Another nice one, Rich!

[Kipper4]

Thanks Larry.
I spent far too long (years) trying to breadboard a State variable filter and the Sabrotone was the one that helped me figure out how to tweek it. I had a good deal of help from the guys here too. I can' find the thread now.

SabroTone SVF? It's here for info.

http://www.sabrotone.com/?p=3194

[rutabaga bob]

I was just about to ask you if there was a link to the project...any build notes or mods you can think of?

[digi2t]

That sounds amazing!! Great work Rich!

[Kipper4]

mods
Change the 220k to 330ks
Use nsl32 vactrols
remove the sens pot and associated 10uf.
rebias the envelope to 2-3V
A few tweeks to the timing cap and Decay pot. much smaller.
I removed the Q pot in favour of a fixed 10k R.
A few more tweeks too. Sorry I'm unwilling to share all at this point.
I like it so much I'm gonna try and sell the bugger.

[duck_arse]

who stole the pies, kipper?

now you've told me there is things I don't want to see on, of course I want to see the circuit. you know my address, no-one else need see ......

[pgorey]

Really like the artwork / design and this sounds fantastic.  Great work! 

[Kipper4]

Appreciated and welcome pgorey.

[pgorey]

If you don't mind PMing me, what price range are you thinking?

[deadastronaut]

You muthafunker, i had to put my flares on after that...   nice work man ... 

[Kipper4]

You'd fit right in here Rob, pensioners in flares is the norm.
Thanks man.

[EBK]

Rich, I finished watching that video 20 minutes ago, and I'm still walking around my house mouthing auto-wah sounds!  Sounds very well balanced in its sweep.  When my "Mood Shifter" pedal makes it to the front of my design queue, I'm going to come bug you for help on the envelope part. 

[Kipper4]

Thanks Eric. I'd be glad to help.
Though there are way more qaulified people who I'm sure will chip in.
I'm statring to get to grips with envelope detectors.

[duck_arse]

I'm statring to get to grips with envelope detectors.....

.... but I needs some help wit der spellinks. chukka wah always has that affect on me, too, with the mouth formings, less so the walking around in flares. I especially like the last decaying sweep in yr last clip [or is that the hammer time?].

[pgorey]

Well, I have put this pedal through the paces with a Fender Bronco (modified with added neck pickup), Gibson ES-345 and Gibson Nighthawk studio.  These guitars provide a mixture of pickup configurations and outputs volumes.  The consensus is that I love the design. It's super musical and requires no tweaking for a great sound.  If anything, I have found some great sweet spots and then a world of cool sounds just by adjusting my playing or tone a tiny bit.   Anything from super funky bubble curves to slow electronic music curves can be found quickly. Great job!

[Kipper4]

Thanks for the endorsement. Appreciated

[stonerbox]

Klipper that pedal sounds amazing! So lush, smooth and bubbly.. like smoking a bowl then munching on chewits in a hot bath. Dig the art too!

[Kipper4]

Thanks Ben.