MOD-ABLE WAH RTS PCB

A ready-to-solder, mod-able wah PCB that drops into most Cry Baby, Dunlop™ and Vox™ wah pedals, with trim pots and options for tuning the sweep to your taste.

About this PCB

This board lets you replace the circuit board in an existing wah pedal with a flexible, good-sounding circuit. The design is based on Gerben Koopman's wah and includes trim pots for tuning the tone and capacitor placements that change the tone range. The project page has wiring diagrams for a range switch and for switching between two inductors with a toggle or rotary switch.

The same PCB can also be used to build a Vox™ 847 replica, with its own schematic and true-bypass wiring diagram.

What you get

• The mod-able wah RTS (ready-to-solder) printed circuit board

Specs

• PCB size: 5.5cm x 4.5cm
• Fits most Cry Baby, Dunlop™ or Vox™ wah pedals; some newer shells may need plastic standoffs
• Solder mask, plated-through holes and silkscreen for component placement

Also builds

• Vox™ 847 wah replica

Build resources

• Complete instructions for this PCB
• Complete instructions for this PCB to build a Vox™ 847
• Range switch with toggle switch inductor selector (PDF)
• Range switch with rotary switch inductor selector (PDF)
• Vox™ 847 wah schematic (PDF)
• Vox™ 847 true-bypass wiring diagram (PDF)

Trademarks mentioned here belong to their owners, not General Guitar Gadgets.