Dunlop GCB-95 retrofit to a GCB-95F

[MAO]

I decided to convert my GCB-95 to this GCB-95F mostly due to this shootout video.

My stock wah was noisy towards the toe down position, a little too bright and thin sounding, and there was a slight delay before the wah effect would kick in (from the heal down position)

Now its my kind of classic rock wah :0)

Designed to retain the original input/output jacks and the 9v jack  
Sized to lay on top of the GCB-95 PCB
I added both an "adjustable Q" trim pot and a "vocal mod" trim pot out of curiosity and I had the room.  Wanted to find out if/how they differ.  

1. Desolder and remove all components including the black inducter
2. Do not desolder or remove the input, output and dc jacks
3. Disconnect the wires from the stomp switch and remove the "extra" blue wire
3. Shield the input and output wires
4. Replace the SPDT stompswitch with a DPDT or 3PDT stomp for true bypass wiring

Mods:
Mids - increase 1k5* resistor value (I used 1k8)
Bass/Gain - decrease the 470R* value (I used 330R)
High output pickups - Increase 47k* to 100k (prevents overloading Q1)  
Reduce toe down highs - Install a 5k1 resistor between Wah pot lug 1 and the original black wire
Filter range - increase the value of the 10n cap on the bottom half of the board to lower the filter range

I added jumpers on the bottom of the pcb to move the Wah 2 and Wah 3 connections closer to the stripboard wires

I also repositioned the Wah pot linkage to engage the wah effect immediatedly from the heal down position (mine originally had a slight delay before the filter would change)



stock gCB-95 PCB


Stipped PCB with red fasel installed


stripboard, notched to fit beside the DC jack


stripboard installed