"Wailer" Crybaby Mods

For this project, I added external controls for every paramater that's adjustable in a Wah. I used my drummer's stock Crybaby wah and added:

1. Six Selectable Frequency Ranges: Silver Knob(includes the Jimi Hendrix Wah range, stock, and 4 others)
2. Volume Boost: Green Knob (needed because of conversion to true bypass)
3. Variable "Q": White Knob (changes the shape of the filter, from wide to narrow)
4. Variable Mid Boost: Red Knob (Adds some mids and smooths the transition from heel to toe positions)
5. True Bypass with LED Indicator
6. Removing the stock input buffer and Adding an Output Buffer (so the wah is useable with any low impedance distortion pedals - i.e. germanium fuzz's)

Check out all of the pictures here.

This was a great project, mainly because I didn't have to make the PCB and wire up all the components- they were all there already! The hardest part was drilling through the Solid Steel enclosure - I've never done steel drilling before.

During this whole process I forgot that I was removing the output coupling capacitor from the signal chain by adding the output buffer, so I was getting a HUGE pop when switching the wah on and off. Then I tried putting a coupling capacitor on the input (useless...), and then I realized I needed it on the Output. As soon as I put one on, there was NO pop whatsoever, it's really quiet.

Here are some Sound Samples that highlight all of the new features!
1 - Introduction and Stock Range vs. Jimi Wah Range comparison
2 - Low to High run through of the Six Range settings
3 - Filter Shape control: "Q" value mod
4 - Volume knob demo
5 - Mid Boost knob demo

Thanks for listening - let me know what you think :-D