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PostPosted: Wed Dec 13, 2017 10:59 am 
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Mouser 3-pole 3-pos. rotary switch
https://www.mouser.com/ProductDetail/Al ... sYkQ%3d%3d

I personally think an external Gain knob is a waste of time. “Gain” is not the best word to use as the description for this resistor’s function. The pot is actually a volume offset control. When you convert a stock non-true bypass wah pedal to true bypass there is a drop in volume level that goes along with the mod. To correct for this volume offset the 68K resistor is usually lowered down to around 47K. This makes it pretty much a set and forget type of adjustment. A much better option IMO is to use a 100K linear taper pot for the Q control.

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PostPosted: Wed Dec 13, 2017 3:11 pm 
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Just wanted to add that if you do the external Q mod to add a 5K to 10K resistor in series with the pot so there is a minimum resistance still in the circuit when the pot is dialed all the way down.

Another option would be to place a 33K in series with a 50K pot. This would mean the stock Q resistor value would be in the circuit when the pot is dialed all the way down and 83K when dialed all the way up. As far as I know no one has ever done this mod and placed a smaller value resistor in place of the stock 33K value. Once you get to 100K (83K would be close enough in this instance) there isn’t much to be gained by going even higher in value. That being said your mileage may vary so experiment with the values for the Q resistor until you’re satisfied with what you are hearing.

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PostPosted: Wed Dec 13, 2017 9:59 pm 
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Mammoth has this 3-pole, 2, 3 or 4 position rotary switch.

https://www.mammothelectronics.com/coll ... h-pc-mount

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PostPosted: Fri Dec 15, 2017 5:13 am 
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Attach the resistor to lug 1 or 2 of the pot. Connect the other end of the resistor to the PCB. Now connect the pot’s other lug (1 or 2) to the PCB. With the pot turned fully CCW only the resistor will be in the circuit. With the pot turned fully CW both the pot and resistor will be in the circuit. Lug 3 of the pot will not be used.

Image

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PostPosted: Fri Dec 22, 2017 4:25 am 
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Solder small sections of component lead to the pins of the inductor to make them as long as they need to be.

Place the caps on the deck and solder them in. There’s no rule stating the caps have to be above the surface of the PCB. Try laying the caps on their side if there’s room for them. Worst case… get smaller caps.

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PostPosted: Fri Dec 22, 2017 1:46 pm 
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Yeah, it's fine to bend the caps over. You just need to make sure that the leads don't touch any other metal.

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