Thumbe BO4. Aguilar obp-3 which one? Pots 250K or 500K?

[bassist22]

hi
want to upgrade the preamp in my thumb BO4.
which aguilar 3-band preamp do i use?

"OBP-3SK/PP: Includes stacked Treble/Bass pot and separate
Mid pot. Mid pot is push/pull for Midrange frequency selection."
This one?

also, which pots do i need, 250k or 500k? whats the difference?

any thumb4 owners out there with an aguilar-3-band setup willing to post their control setups?

Thanks

[SurrenderMonkey]

http://www.aguilaramp.com/pdf/support_wiring_obp3.pdf

seems to be 50K pots. Sounds about right for active preamps.

[line6man]

Originally Posted by SurrenderMonkey

http://www.aguilaramp.com/pdf/support_wiring_obp3.pdf

seems to be 50K pots. Sounds about right for active preamps.

Yep, 50K for the B/M/T controls.

As far as the volume control, you may find these two links helpful:
What effect does 1 meg pot have? Also, audio vs. linear
Passive basses and the volume control, an explanation (science warning)