Here's a wiring I'm currently working on. A friend of mine wanted to pimp his old Strat without changing the 5 way switch and using only one push pull pot. It is based on my favorite wiring which uses a 5 way switch to switch between N and B (see here). In this case I'm not using a on-on-on switch to add the middle PU either serial or parallel but a on-on push pull pot in cooperation with a dual pot. In series mode the dual pot blends M away from the 5 way switch and in parallel mode the 5 way switch is blended away from M leaving the middle PU alone, so every combination from a standard strat can be archieved plus N-B combinations and B+33n cap which gives us a mid cut.
The tone pot could be replaced with a pp pot too for OoP sounds to bring matters to a head. Haven't tested it yet so I can't say how good the blending part works but in the extrems it should be fine.
Not sure I'm following your diagram here. How is the neck - getting grounded in position 5? Also, since you are permanently grounding M +, it seems as if the middle pup will always be OOP with the others, assuming the pickups are a matched set. Thirdly, the "cap bleed" on the bridge pup shorts B + to B - through the cap, so I don't see how you're going to get any signal there. The cap will block a range of frequencies; those that aren't blocked get shorted out across the pickup.
Just a quick glance at this over my lunch hour at work, so maybe I'm missing something . . . correct me if I'm wrong!
Hi and thanks for the reply. Well M+ and M- really seem to be connected OoP, the other PUs are grounded with the - Pol, so this should be changed if OoP is not desired. In Pos. 5 the neck PU isn't grounded directly because it's serial with the bridge PU, which is either grounded through the blender or through the middle PU in series. In Pos. 4 the cap is connected parallel with the bridge PU which is a common thing. Basically it's the same as a tone control without a resistance in between but 33n isn't such a radical treble cut.
It's getting more interesting when the middle PU is switched serial to the 5 way switch because then the cap bypasses the bridge PU in Pos. 4.
The 5 way switch is connected pretty much like the well known tele 5 way switch but N and B are changed because I like caps on bridge PUs more. On the picture the neck PU is also grounded but not shown:
OK, I see it now, except for the OOP issue. At position #4, the neck is hanging from hot, but as we've often debated, this may be more of a theoretical problem than an actual problem, whether it actually makes any real-world difference in noisy-ness is debatable.
I had the tele wiring in two of my guitars and never had any noise issues even with higher output single coils like the duncan ssl 5.
In my layout the neck and bridge PUs are connected with ground by the minus lead while the middle PU is connected with mass by the plus lead, that's why the middle PU is OoP with the rest. It will take some time till I'm able to try this wiring by myself, so please feel free to comment if you manage to try it before..
I'm sure it's one of the more versatile wirings in cost relations out there cause you don't even need a superswitch.
I was wondering what type of dual pot you have in mind? Is it a guitar blend pot, where each half has a very low resistance side so you can have a full mix in tbe centre? If so, which side is low resistance for each pot half? Or is it a dual log/antilog pot or a dual linear pot?
I would try a dual linear pot first but maybe a dual log will also work decent. Taking a look at the wiring we can see that if the full resistance (let us say 250k) is on the right side, the red B- lead is full connected to yellow lead and there are 250k between ground. The upper pot doesn't see any resistance because the right lug is bypassed.
If the full resistance is on the left side, the red B- lead goes to ground and the yellow lead is blocked by 250k. In series mode the upper pot is bypassed by the pp switch because we don't want any resistance here but in parallel mode there would be 250k isolating the 5 way switch from the middle PU.
To be honest, I don't think that the mixed sound of the blender centered is really interesting. I think that in practice someone will use the extremes of the blender and nothing else.