Re: CS P-90 size humbuckers
Imagine, if you will, that the bobbins intended for a humbucker were shaved or abraded down about their straight edges such that the wound copper coil would almost extend beyond the new edge.
Now, imagine these coils mounted side-by-side on a metal baseplate of approximately soapbar P90 proportions.
With the polepieces approximately a quarter of an inch closer together than normal, the sensing window is narrower. So, in a manner of speaking, is the sound.