Les Paul stacked P90 wiring help

Matthew Hall

New member
Hello everybody. I have a query regarding wiring that I have trawled through the internet for weeks without solving. I am hoping there is someone here who can help! I have been coming here for years but never had anything new or useful to add to anything, so this is my first actual post. :nervous:

I have an Epiphone Les Paul that I love, but the bridge pickup was faulty, I replaced it, but now the pickups are mismatched and I was thinking of Stealth P90's, when I came across "stacked" P90's. They can be wired in series, parallel, split for top coil or bottom coil. Basically, the Jimmy Page wiring.
Now, I have done something similar with a Strat, using three push pull pots, and it is great fun but you do end up "dancing" on the knobs to get from one sound to another, and due to the top hat type knobs, I have to set them high in order to get my fingertips under the knob to pull them up so they sit higher than I would like. So....

On the LP, I wanted to have two volumes for independent volume control of the pickups, a master tone pot for both of them in the bridge pickup position, and the neck tone pot turned into a rotary selector that will series / parallel / coil split both the neck and the bridge stacked P90's, utilising the existing 3 way pickup selector switch. Having the ability to roll the pot rapidly through the tonal variancies whilst playing could create some interesting tonal effects as well, impossible to do with push pull pots.

I have tried adapting a PRS wiring diagram, and failed. I have tried adapting a Jimmy Page 4 push pull pots diagram and failed horribly. I have searched Seymour Duncan thoroughly and failed to find what I need, which is a first! I cannot work out how to do this, partly because I have never wired in a rotary pot before, and partly because I am rubbish at working out complex schematics so get my electrician mate to work out and draw it for me, but he can't work out the schematic either.
I want the guitar to look completely standard, but have humbucker capability and all the various tones accessible via the rotary selector disguised as a tone pot. I'm not particularly bothered about phasing the pickups which I did on my strat with some really odd, and useless tones resulting. It would be nice if it was easy, but it is not important.

Can anyone point me in the right direction, or link to a schematic that could be adapted fairly easily? I can find push pull pot diagrams, and I can find rotary switching diagrams, but not a jimmy page with a rotary option. It must be possible, but it's beyond me.

Thanks in advance,

Matt.
 
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Re: Les Paul stacked P90 wiring help

Matthew - there is absolutely more than a couple of people here that can help you.

But not me….


That said - I do dig a good P90 and a flexible pickup. TEll me about these P90s. WHo made them? How is the P90 tone? How are they split? I HATE Gibson P100's.
 
Re: Les Paul stacked P90 wiring help

Aceman, there are several makes, Seymour Duncan STK-P1 Stacked P-90 Single-Coil Pickup is a 4 wire P90, so split-able etc., and Warman do a stacked P90 too.
http://warmanguitars.esellution.co....oapy-joe-double-bubble-stacked-p90-humbuckers
Their eBay site (not sure about their actual website) has a graph showing the frequency response in series / parallel / top coil and bottom coil.
Wilkinson do a stacked P90 but I don't know if it is 4 core wired or just a silent P90.
Getting away from the stock soapbar look, DiMarzio do a mean looking pup too. http://www.dimarzio.com/pickups/soap-bar/virtual-p90

Thing is, without any idea of what to do with the rotary switch, I'd be better off just replacing the existing pups with a nice matched pair and leaving it standard. But...that's so BORING!
 
Re: Les Paul stacked P90 wiring help

Yes, SD P90 Stacks can be wired up to switch between series, single coil and parallel coil interconnection BUT ...

… in my opinion, it's not worth doing.

With the coils stacked vertically, the tonal difference between series and parallel is not very pronounced. Just slightly thicker midrange - mostly in an annoying way.

I strongly recommend that you stick with the parallel configuration illustrated in the official wiring instructions. A variable coil roll off ("Spin-A-Split") on the lower coil might help to strike a workable balance between noise cancellation and true, single coil, P90 goodness.
 
Re: Les Paul stacked P90 wiring help

Never really heard P100's in the flesh so can't really comment on them.
It may not be aurally worth messing with, but the same schematic could be employed with standard humbuckers on other LP's I have. Once it's done, it's done for other applications, regardless of the effectiveness of some of the sounds. :) I discovered the uselessness of split coils in parallel with the phased middle pickup on a strat, but it's still a nice thing to have just for goggles.
 
Re: Les Paul stacked P90 wiring help

Been listening to lots of pickups and configurations, but haven't been able to find a P90 stacked pickup (or humbucker, for that matter) that is series / parallel with itself. I have heard it between 2 pups, but not by itself. In my strat, the series / parallel push pull with the neck and bridge humbuckers and middle pickup combination make a massive difference in tone. Not necessarily in massively effective overdrive, but clean, it's like night and day. Surely a parallel humbucker on its own would have a marked difference when messed with?
And, in case there's any really clever people here, I tried to adapt a 4 push pull JP wiring diagram to a rotary, and just...couldn't. Nor could I find mention of this anywhere else! I can't be the only person in the world who has thought this would be a cool idea? Surely? Push pull pots are alright, but I'd prefer Push / push pots, but all of them pale in comparison to the PRS rotary thing idea. Just seems impossible to actually wire up! :15:

Anyway, it's an interesting (to me) concept partly because I have never heard any of these tonal options in a guitar with stacked 90's, and never played with rotary knobs before.
 
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