I think I'm calling this the right thing. I've already made my wah true-bypass and put an led on it. What I would like to do now is make it so instead of the wah only happening at a very small portion of the overall movement of the pedal, i want it to happen over a wider range. (If this makes sense?) Isn't this called the sweep? From http://geofex.com/Article_Folders/wahpedl/wahped.htm#basicmod it looks like I need to replace the Rw capacitor. Any suggestions for values and such for a full sweep? Tried lookin on this forum, couldn't find any relevant info, but I didn't search thru all 16 pages either..
I think the sweep cap value is .01uf in the original. The lower cap value you stick on it, the more sweep and treble response you'll get. I suggest you put a socket there and just stick differednt values until you get what you want. Better yet, do the selectable sweep range with half of a 2P6T rotary switch.
In my build, I used .0068uf, .0082uf, .01uf, .015uf, .022uf and .047uf for the six sweep cap. But as always, you may want experiment with the values until you get what will suit your taste.
Here's a site that also says .01
http://members01.chello.se/pastorn/fx/mods/dunlop.htm
I just swapped a .047 in mine and it was way too much.
.015 or .022 will probably be nice. I'll know shortly.
Thanks for the help, could you give me details/link for that selectable sweep range? Sounds like a good idea.
The selectable sweep range is in the same link you posted, geofex.com. Technology of Wah Pedals. Have you read the whole article?
No, but I'm going to here shortly.
Here's some info on sweep cap sizes and some resistor changes you can try. I changed the resistor values in my Vox Wah as suggested and was impressed with the results.http://homepage.ntlworld.com/s.castledine/greenfuz/wah.html