Looking for a volume pedal with a 47K-50K log potentiometer

I've got a preamp with a volume jack on the rear panel and I'd like to see if I could use it to control the volume and also use it as a standby. According to the manufacturer, the value of potentiometer which would work best in a volume pedal would be 47K-50K log. So far, I've been unsuccessful at finding one. I've seen potentiometer values of 500K, 250K and 25K, but nothing in the range I was looking for.

I thought that I could get an old style Ernie Ball pedal, without the circuit board, and find a 47K-50K potentiometer that would have a long enough shaft and try to get it to work, but really that's just an idea and I don't know if it would work.

So, I thought I'd come here to ask if anyone knows of a solution for this. Another idea is to get an on/off switch type of pedal to toggle the volume. Again, I'm unsure of the type of switch I would need.

If anyone knows of a pedal that would work or another solution that would be great. Any other thoughts would be appreciated as well.

 

True, I could use the 250K volume pedal that I have now, but with the correct pot, I thought I could get the volume to swell. Currently the pedal acts like an on/off device. I was wondering if anyone knew of a volume pedal with a 47K - 50K pot. The on/off function is okay, but I'd probably go for a foot switch for the toggle rather than a volume pedal.

The preamp is the Phil Jones P-1 and on their website they have advertised that the volume jack is compatible with the Phil Jones volume pedal, however, after a few emails I got the impression that they do not have a volume pedal in the pipeline. But, Phil did give me the proper value for the potentiometer that would work best for the P-1.

The build-your-own idea is good, but finding a potentiometer that will fit a pedal and bypassing any of the pedals internal circuitry is a bit tricky, at least for me.

So, I was trying to find a pedal that matched or if someone has built one before that works well, I could use some advice.

 

Thanks Niftydog & Scotch,

I suppose I could just use a regular volume pedal in-line to the preamp, but I was tryin' to get a standby feature by using the preamp volume jack which controls the master volume to the amp. This way I could still use my tuner in silent mode and ensure I'm not popping when changing basses.

I'm still just using the volume knob on my bass as my in-line solution.

 

Sure, now I understand, just never did that before. With the signal from the preamp to the amp being line level, I'm thinking my 250K potentiometer will act like an on/off pedal, producing no swell. But seeing as I've never tried this, I'll check it out.