Will the BBW Sonic Stomp work with an off-spec pot?

[MBFX]

I don't use many B50K pots, so I only bought two. One of them measures 37K. Think that will be useable? Can I swap out for a B100K?

 

[lowpitch]

You can use it but turning the pot all the way counter clockwise will have less range than a pot closer to 50K. For the opposite case - all the way clockwise - it doesn't matter. 100K will technically work but may not sound right.

 

[MBFX]

I'll give it a shot, thanks!

 

[Diynot]

Put a 100k resistor across lugs 1 and 3 of the 100k pot to get 50k

 

[MBFX]

Put a 100k resistor across lugs 1 and 3 of the 100k pot to get 50k

I would do that, but I'm out of 100K resistors

 

[Feral Feline]

I would do that, but I'm out of 100K resistors

What have you got close to 100k?
100k pot + ...

​

110k = 52k38​

102k = 50k495​

91k = 47k6​

82k = 45k​

​

What resistors have you got that you could solder together in series that gets you close to 100k?
Calc it out here. You could solder a couple of smaller value resistors together and then bridge that over the 100k-pot's 1&3...


Don't forget, the resistor across the pot-lugs trick does change the taper; I read that in The Secret Life of Pots, IIRC.

 

[MBFX]

That's another reason I'd like to avoid the hacky way of doing it - it would be nice to have the taper be correct

 

[Feral Feline]

Hey, I get it.

I make those suggestions, but I've got a few builds on standby where I'm missing ONE resistor (390k, why is it always 390k?);
even though I had some 1/8w, I'm loath to use them (or stand a 1/4w when the layout calls for 1/8), but now I've run out of 1/8w 390k too...

 

[pricklyrobot]

What does the pot control?

If the low-Ω side of it is the more important tweaking zone, the 37k (or the 37k + a 10k fixed resistor in series) might work fine

 

[MBFX]

What does the pot control?

If the low-Ω side of it is the more important tweaking zone, the 37k (or the 37k + a 10k fixed resistor in series) might work fine

I put it on the treble side, since I mostly cut treble (single coils, Bassman, 2x10 Celestion Golds)