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DIY Stompboxes => Building your own stompbox => Topic started by: John Egerton on September 16, 2004, 06:07:00 PM

Title: Idiot Wah Question
Post by: John Egerton on September 16, 2004, 06:07:00 PM
Hey guys...

What causes the Idiot Wah to wah....

Is it the introduction of ground to the 'controlling resistor' stage, or is it the resistance of ground to it?

Thanks...

John
Title: Idiot Wah Question
Post by: Tim Escobedo on September 16, 2004, 06:38:51 PM
The vairable resistance to ground allows the Twin T filter to be easily tuned. Tuning the filter while playing makes the "wah" sound.
Title: Ok
Post by: John Egerton on September 17, 2004, 06:50:03 AM
Ok, so let me get this straight.

Say I wired a pot there, innstead of an LDR etc..

Turning the pot from 0k to 50k resistance whilst playing will turn the wah 'up'

Turning the pot all the way back down to 0k Will bring the wah back down to normal?

Thanks Tim


John
Title: Idiot Wah Question
Post by: Tim Escobedo on September 17, 2004, 10:05:48 AM
You got it.

Though it's backwards.


Turning the pot down from 50k to 0k resistance whilst playing will turn the wah 'up'

Turning the pot all the way back up to 50k Will bring the wah back to normal?