I made some big moves to the bass that started this thread all those years ago!
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I acquired a new DiMarzio Model P pickup and had the body routed for an additional split pickup half to either side of the existing rout in the standard (i.e. Fender Precision) position and orientation. The new pickup went in toward the neck, the old pickup (an early ‘80s DiMarzio clone by Schaller, to the best of my knowledge) shifted toward the bridge, and a 4-way rotary switch replaced the tone knob.
I can now select:
•reverse-P with the bass half in the standard position and the treble half toward the neck à la Mark Hoppus (“neck position“)
•standard position and orientation (“middle position”)
•reverse-P with the bass half in the approximate Stingray position and the treble half in the standard position (“bridge position”)
•all four halves together (“everything”)
Going into this latest operation, I found the original pickup in the original position a bit darker and less defined than I generally like, even after trying stainless steel roundwound strings and 1M pots on both the volume and tone knobs. I hoped this new arrangement would get me at least one setting with more high end and definition, and predicted the bridge position and everything setting would get me there, with darker options in the middle and neck positions.
As it turns out, all four options seem like improvements for my purposes!

The neck position doesn’t sound dark at all, if anything maybe a bit scooped relative to the middle position, with the bridge position perhaps a bit more mid-focused; all three of those settings provide excellent, slightly different takes on an aggressive Precision sound. Not too surprisingly, the “everything” setting sounds quite different from the others, but not quite in the way I expected. I did expect something like a thicker 50/50 P/J blend, and it does sound like that; but somehow this ended up the … darkest? … bassiest? …loudest? … least defined? setting of the new arrangement

I do like the “everything” setting, but it sounds more like switching on some kind of pedal than merely switching pickups.
Anyhow, I’m really glad I took this latest chance on this cheapo, and I’m pleased with the results.
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