Re-purposed Jazz/JB...and you thought you knew this set

[socalscott]

Jazz in the B position.

Mod'd JB in the kneck position.
Mod'd to the Fralin P92 format, i.e. 3 poles per coil.
Pretty much virtual SC's, but horizontal rather than stacked coil layout. This mod to the Jazz resulted in a great, chimey open N pup too. No mud Bud. Both responded with spank with dramatic volume pot roll-off.


They balance well and get Ducky in parallel. Pretty much vintage output.

Some A3 mags may get swapped in.

 

[CTN]

Re: Re-purposed Jazz/JB...and you thought you knew this set

sounds interesting, but 3 poles?! does that mean you leave all the studs where they are and only remove three of the fillister polepieces?

could you share a pic?

 

[GuitarDoc]

Re: Re-purposed Jazz/JB...and you thought you knew this set

Jazz in the B position.
Mod'd JB in the kneck position.
This mod to the Jazz resulted in a great, chimey open N pup too.

Couple questions...

Are you doing this mod to the JB or the Jazz?

Also...

Mod'd JB in the kneck position.
Mod'd to the Fralin P92 format, i.e. 3 poles per coil.

Are you saying you're going to take out three fillister screws and three slugs?! You know that the JB has six screws and six slugs, right?

 

[switchman]

Re: Re-purposed Jazz/JB...and you thought you knew this set

Jazz in the B position.

Mod'd JB in the kneck position.
Mod'd to the Fralin P92 format, i.e. 3 poles per coil.
Pretty much virtual SC's, but horizontal rather than stacked coil layout. This mod to the Jazz resulted in a great, chimey open N pup too. No mud Bud. Both responded with spank with dramatic volume pot roll-off.


They balance well and get Ducky in parallel. Pretty much vintage output.

Some A3 mags may get swapped in.

Nice work on the experimentation, as I've tried this myself too But this is not really a virtual single coil or P-92 mod. A P-92 or Twangmaster is a P-bass style split coil pickup under a humbucker cover.

The difference to your mod is the coils are still full length under each string. There is no magnetic shielding between the two coils. There is still magnetism bleeding over into the coil where you removed the polepieces from , and therefore both coils sensing each string, some degree of resultant phase cancellation. This is the same principle in why a basic vertical stacked pickup does not sound like a true single coil.

I would be interested to here some sound samples as I'm skeptical this polepiece removal mod alone produces significant change to frequency response. In my trials on vintage output neck pickups the effect was indistinguishable from rolling volume and tone down a few ticks. It did not add or restore missing chime. Removing metal (polepieces) lowers the inductance a bit, and therefore output and so on but in this form its subtle.