I'm building a Fatpants into an old Cry Baby shell to make a combination volume/boost pedal. The Fatpants calls for a 50KB pot, but standard wah pots only come as low as 100K, either audio or ICAR, I assume. I don't want to get involved in adapting a normal pot, drilling and pinning the shaft, etc. Also, off-the-shelf wah pots are better sealed and will last longer. So, I'm stuck with available wah-pot values.
OK... so if you had to put a 100K pot in the circuit, would you change any other component values, most notably C4 or R6?
Let's go deeper... let's say you're also putting in a normal pot with the footswitch selecting "knob" or "pedal". Would you make the normal pot match the slightly off-spec 100K pedal, or use the stock 50K value?
My Small Bear order awaits your wisdom and/or crackpot opinion. ;D
I'm no expert but this might help, can someone confirm this?
(http://i32.photobucket.com/albums/d12/maiverock/pot.jpg)
I think this should reduce the pot value to 50k
i think the resistor has to be soldered across lugs 1 and 3 for this to happen. i'm going off of what brian told me to do on the Pyledriver I will be building soon. here's the link.
http://www.madbeanpedals.com/forum/index.php?topic=37.msg171#msg171
Rich, a 100k pot will work just as well here. 50k is simply the value I chose because it was what sounded good to me. It is only a volume control. If you use the 100k, you could also reduce the 220k just before it to 100k as well to keep roughly the same output impedance.