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Re: Bourns wah pot


 
1/24/2003 6:14 AM
Rick Erickson
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Re: Bourns wah pot
A standard 100K linear pot won't work in a Crybaby wah. The original pot sweep is 100K and Linear but the total resistance sweep happens in less than 180 deg. of rotation. You won't get the familiar "Wah" sound from a 270 deg. pot. It will be very weak, with no vocal quality.  
 
Word! :)  
 
RE
 
3/28/2003 9:55 PM
Bjorn
Well, last May I put a 100K lin Bourns in my JH-1 Wah..best sound I ever had with that pedal(IMHO of course).  
bjorn
 
 
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3/29/2003 11:46 PM
Rick Erickson
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Where did you purchase this Bourns pot? I'm guessing it's one of the custom made ones from Roger Mayer or his associate in Hawaii.  
 
RE
 
4/3/2003 2:53 PM
bjorn
Rick, it's from RS-Components, UK.I bought it years ago from an electronic parts surplus shop.It seems to be a standard lin.type.  
Bjorn
 
4/3/2003 5:30 PM
Rick Erickson
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Bjorn,  
 
In that case I'm surprised that it works as well as you say. I haven't been able to get an off-the-shelf pot to do a very convincing Wah sound. The sweep usually won't go low enough or high enough depending on where you adjust it. I'd be interested to hear if others have had good results with these.  
 
RE
 
7/18/2003 6:11 AM
dave
anyone ever think of making an "extreme" wah pedal using different gear ratio's on the pots? if you tweaked the gears a bit or mickey moused some device to turn the pot differently, you could cram an enormous range into a tiny sweep. the gears used in vox, dunlop etc seem pretty standard, but by adding a few extra gears you could adjust the "sensitivity" of the pedal a lot. perhaps this could be done easier using roger meyers new magneto wah or whatever it is.
 
7/27/2003 1:16 AM
Rick Erickson
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quote:
"anyone ever think of making an "extreme" wah pedal using different gear ratio's on the pots?"
 
 
An interesting idea for sure. The main problem with the existing pots is that they wear out rather quickly from being rotated to death. I think anything that increases the velocity of the sweep is going to compound that problem. It would be nice to come up with a linear sweep resistance circuit that didn't require the pot, or at least didn't run audio through it, and would have fast enough response to wah properly. Haven't found one yet...  
 
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