Dunlop GCB-95 Cry Baby Modification – True Bypass

@mojosarmy sent me a tweet letting me know he posted a video where he modified his Dunlop GCB-95 Cry Baby to be true bypass. This is a great 2 part modification that I did to my wah a couple of years ago (I also changed the inductor, changed the pot to an ICAR taper pot and added a LED).

For those of you interested in tweaking pedals, this is a great project that covers a lot of the fundamentals and something that will definitely get your hands dirty. The first part of the modification is to replace the footswitch with a 3PDT footswitch. That will get your switching ready for the true bypass, but you must follow that up with the PCB mod. Changing the footswitch alone will NOT make this true bypass. That is because the signal is buffered in the circuit after the input signal. The goal is to route the input signal to the footswitch then back to the circuit. That is the second mod. The second modification involves cutting a trace on the board and hard wiring a lead from the board to the footswitch.

Mojo did a great job showing all the steps as well as explaining what all needs to be done. For further information, especially if you’re PCB board in the wah doesn’t look like Mojo’s, check out this GREAT page – True bypass for the Dunlop GCB-95 Crybaby That pages shows the trace cut on various revisions of the board (Rev F, G, H & I). Thanks Mojo for letting me know about your vid!