It appears to be a high pass filter on the bridge PU and a low pass filter on the neck PU. Do you find it useable that way?Yes.., someone f'd with it! The original sound/result if wired correctly leaves the two controls as joint bass/treble per pu - full clock-wise more treble, full counter-clockwise more bass. Both sort-of V&T mixed into one pot per pu. The original schematic is on my thread.
The 100k pots don’t seem to load down the pickups too much. At least it doesn’t sound muddy in the demos.



