Dunlop Wah Mod wiring

Started by mrslate, October 03, 2011, 12:25:32 AM

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mrslate

Hi, I have been modding a GCB95 Wah pedal giving it True Bypas, LED, Vocal mod, and a couple other changes.

The last change I want to make is to do the "Sweep mod" between two caps, 1k and 22uf using a DPDT On/On switch. I ran two wires from the board to the middle two switch posts, then soldered the caps on either end of the toggle switch. Doesn't seem to work so I think I may be wiring it wrong. I looked all over the net and found no wiring samples for switches and switching between two caps. Can anyone here help?

Thanks a ton in advance, once I have this figured out (hopefully with your help) I am going to post all my hard to find questions like this on one of my sites.

Todd

Keeb

I think a pic would help.
What caps are you trying to switch between?

petemoore

  Check the paths, if the switch switches from pole to throw 1, pole to throw 2...and that the soldered wires to the traces or whatever actually Make the path.
  DMM Beep mode from 'before', through the switch..then from the other side of 'a' capacitor back to 'after' where it returns, somewhere.."before'' and ''after'' means past where the solder joints were made, making sure the lengthened signal path indeed makes it to somewhere 'in' the board [follow a trace ''into the board'' and check continuity from that point].
   Then figure maybe the cap value only works..when, so much, try a more extreme value alteration or even lift it out to see if it's influencing anything soundwise in the circuit.
Convention creates following, following creates convention.

mrslate

#3
Oh good god, forget it.. I had it wired correcly, but you won't believe why I was having trouble... it seems the battery I was using to test the pedal was out of juice, enough to power to power the LED, but not enough for the wah.. all is good, just a stupid oversight on my modding part.
Thats what I get for modding into the early morning hours!

Petemoore, great advice for future mods though thanks a lot!

Thanks anyway!