Whoops, bought wrong preamp for upgrading my musicman copy ....help

[pvj scotland]

never upgraded the full pickup system of a bass before so as my current system was a active system i set out to buy another better one. I ended up buying the seymour duncan smb-4d pickup with the stc-3m3 preamp after reading lots of great reviews.
i have now realised my mistake.... ive only bought the preamp with the 3 pot controls when the bass i have has 4 pots ...doah !!
This may be a stupid question but since im changing the full pickup , preamp system does this actually matter and could i just leave one of my pots obsolete
Cheers for any help dont have a clus about electronics

 

[line6man]

Wire the extra pot to do something useful. Otherwise, just leave it.

 

[LoveThatBass]

Or, when you find out the value of the Dual concentric Pot (2 pots in 1) you can replace it with 2 separate pots.

 

[RobbieK]

For a spare hole in a MM style bass, I'd recommend, in no particular order:

If your new pre has a stacked treble and bass control, separate this into two individual pots.
You could rewire the slap contour so it works on a rotary switch instead of the volume.
A passive tone control. Simple wiring option, to tame the treble.
A rotary switch for any combo of series, parallel, single coil, passive, you like.
If you can follow a circuit diagram, find a thread from a few weeks ago and make that resonant sweep circuit I posted. I have lent my MM style P to a mate, but when I get it back, I'm going to try a preamp with a sweep filter like this in there.
You could also just put a big toggle switch in there, not wired to anything so you can switch it over when the producer wants a "better/fatter/warmer/etc" tone. This is commonly known as a "producer switch".
Or you could leave it vacant, but put one of those bullet-hole stickers over the top so it looks getto.

 

[pvj scotland]

For a spare hole in a MM style bass, I'd recommend, in no particular order:

If your new pre has a stacked treble and bass control, separate this into two individual pots.
You could rewire the slap contour so it works on a rotary switch instead of the volume.
A passive tone control. Simple wiring option, to tame the treble.
A rotary switch for any combo of series, parallel, single coil, passive, you like.
If you can follow a circuit diagram, find a thread from a few weeks ago and make that resonant sweep circuit I posted. I have lent my MM style P to a mate, but when I get it back, I'm going to try a preamp with a sweep filter like this in there.
You could also just put a big toggle switch in there, not wired to anything so you can switch it over when the producer wants a "better/fatter/warmer/etc" tone. This is commonly known as a "producer switch".
Or you could leave it vacant, but put one of those bullet-hole stickers over the top so it looks getto.

Cheers mate , that's been really helpful, i'll have a think really want it to be doing something. . No use to man nor beast sitting there doing nothing