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Help wiring Aguilar OBP3 preamp


Fanatic1
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Hi Guys, can you help me please?
I need to wire a G&L 2500.
It has 1 Vol 1 Bass 1 Treble and 3 switches.
Attached is wiring diagram.
https://www.bassesbyleo.com/paul/g&l_bbe_wiring_diagrams/basses/l2000_wiring_diagram_omg.jpg

I bought Aguilar OBP3 TK preamp with 3 pots and 1 switch. And two Aguilar humbuckers.
v-tbstack--msw.pdf
I don’t have stack pots, and I want to wire exactly as the original version. I found that wiring diagram for OBP3 3 knobs and 1 switch
Should I use the original 250k pots or the 50k included in OBP3
Can you help?
Thank you!

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  • 3 weeks later...

If the OPB3 is specifying a 50k pot for volume that's what you should use. Without a circuit diagram of the OPB3 preamp its not possible to say if a 250k will make a difference or not BUT the 50k is probably an integral part of the preamp circuit and will most likely give you all sorts of unknowns if you change it to a 5 times higher impedance.

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