This project was provided by Eric Barbour of Svetlana Electron Devices.
As opposed to the solid-state sound of all commercial wah pedals, Eric
describes this unit as having a fat, buttery tone.
Eric was kind enough to send one of these devices to Chris Hurley for
evaluation. After spending a bit of time, Chris comments: "In terms of
Fuzz, this is quite a lively little beast. It can not only generate a
thick fuzz internally, but also drive the front end of your existing amp
into saturation as well. The Wah portion is interesting and can
achieve numerous different sounds by varying the gain control. I'd like to
see a seperate project based on the EF86 fuzz, since this device has a
bit more mechanical construction than some might be accustomed to."
Status: Ready to Build
SCHEMATIC- Eric Barbour's Fuzz Wah Schematic
MP3 AUDIO- Chris Hurley's audio clip of the prototype fuzz/wah borrowed from Eric Barbour
House of Jim- Has board layouts on lots of AX84 Projects and more