Crybaby Q control.

[nelson]

I want to build a stompbox like the Crybaby Q control: Use a pot to select a certain part of the wahs range. I am looking for some Schems to do this. I would also like to add a footpedal to it that switches on when I use it and off when I dont, So I can return to the exact sound I want instead of trying to find the sweet spot on the wah pedal. I havent seen any projects similar around.


Any Wah Schems and ideas on how I can do this?

I am thinking just get a good wah circuit stick it in a box. It is the footswitchable pedal I am having trouble with.

Thanks

[kusi]

hi nelson!

here can you find my wah redrawns - 535q, db-01 and the q-zone :wink:

http://forum.musikding.de/gallery/thumbnails.php?album=8

greetings form switzerland

kusi/khe

[cd]

http://geofex.com/Article_Folders/wahpedl/wahped.htm

[littlegreiger]

Here's a design that I just came up with.
http://community.webshots.com/photo/264274389/359095735QhbggX#
If you have any questions just post them.

[nelson]

Excellent! I am going to breadboard the Q-zone. I assumed it would have an inductor in it, dont know why, this makes it even easier to build just a quad and a dual opamp! Has the schem been verified yet?




Added to my ever growing to do list! :cool:

Thanks Khe.  

I was thinking of using a footpedal to actually control the Q control. I suppose I could just use a wah and use your method littlegreiger, Thanks.