3 single coils = phase issues help please!

[BarkerBass]

Hello all, this thread may become long winded so I'll start with the main question and add others in at the end and save you having to read til the end if you don't want to.

If I wanted to add a single coil Pbass pup (not a split P p'up) at the neck of my jazz bass (mudbucker position) and keep the 2 single coils jazz p'ups would I need to reverse wind one of the pickups?... like on a start, to prevent phase cancellation or is running 3 true single coils just not practical?

Now the back story and other phase related questions:

I ask because I've recently added a Bartolini MM humbucker between the 2 single coil pups of my 5 string and have been having phase trouble when it comes to getting the most of out the coil combinations. In it's current wiring I can get the neck J pup and neck coil of the MM in phase to make a cool humbucker tone (as well as each coil individually) and the same for the bridge J and bridge coil of the MM (and each coil individually), I can also use the MM in series on it's own but I cannot combine the 2 Jazz single coils together to get the "normal both p'ups on full" jazz tone because they are out of phase with each other in order to be in phase with the Mm p'ups coils. I chose to have them wired this way for now because I like the joint J+MM humbucking tones a lot and I'm not to be too bothered about not having the jazz series tone for now, however it's a tone I do miss form time to time so would like a way of accessing it.

If I wanted to have both Jazz pickups on together (no MM coils involved) would I need to add a phase switch to change one of the Jazz pups so that they were then in phase with each other? How easy is this to do?

I love the 5 strings new tones but feel I could get more out of the bass if I could use both Jazz p'ups together. ATM when I try and run both together they sound very quiet and thin sounding, at least 1/3 of the output of the other options.

Also I apologise if I've used any incorrect terminology, I'm not an electrician or wiring guru just a budding modder and so don't know if what I call phase is actually phase etc.

Thanks, BarkerBass

[BarkerBass]

bump... no one gonna help me here?

[PJSShearer]

It is difficlut to be sure as to what you are asking, but I think you want to add a third Pup to your Jazz Bass at the neck position?.

You say that currently when you run both Jazz pups at full power the volume drops and the sound goes thin?. It sounds to me that your Jazz Bass is wired out of phase at the moment, try flipping the connections of one of the pups and see if that cures the problem.

When adding the third pup, all three pups can be in phase with no problems, but you could add a phase reversal switch if you want to (recommend the middle pup) simply enough - the diagram can be found on the DiMarzio site on this page:

http://www.dimarzio.com//media/diagrams/4Conductor.pdf

- and you can get pots with a push-pull DPDT switch built in so you don't need to drill another hole.

[BarkerBass]

I was asking about adding a 3rd pup to my jazz yeah. sorry to confuse you with multiple stories.

so if all 3 pickups are in phase they'll all work at once?

[PJSShearer]

Yes of course!!. I know some Strats come wired with the middle pickup out of phase, but not all of them do.
Anyway - experiment and have fun - get a cheap pickguard/control plate you can drill holes in without minding, some pots and switches and give it a try.

Let us know what u come up with.