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P90 With a Humbucker.

Discussion in 'Just Pickups' started by Jammin'John, Oct 28, 2018.

  1. Jammin'John

    Jammin'John Friend of Leo's

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    I'm considering swapping out the bridge humbucker on my 2 humbucker guitar with a hum size p90.
    I know when the 2 are on it won't be hum cancelling but I was wondering if when both are on the hum would be low because only the 90 will be humming.
    Anyone done this ?

    JJ
     
  2. brookdalebill

    brookdalebill Tele Axpert Ad Free Member

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    It will hum a little in the “both” (middle) position.
    There are lots of hum-cancelling P90 type options.
     
  3. Jammin'John

    Jammin'John Friend of Leo's

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    I want a single coil p90. The "options" are humbuckers and are expensive.

    JJ
     
  4. littlebadboy

    littlebadboy Tele-Afflicted

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    Check out the P-Rails too.

    I like my GM P-94 neck partnered with a humbucker on the bridge.
     
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  5. Jammin'John

    Jammin'John Friend of Leo's

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    I've had P Rails. They are nice. I swapped them out for a Phat Cat neck and Vintage Vibe bridge on that guitar.
    The reason that I mention doing the bridge pup is that the neck humbucker sounds pretty good. The bridge doesn't have enough spank and is thin.

    JJ
     
  6. fatcat

    fatcat Friend of Leo's

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    1540753589392.jpg

    The reverse of what you're asking.

    It's a Gibson P94. Not hum cancelling. But if you use some good shielded wire; hum should be minimal. Mine is dead quiet, for a single coil.
     
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  7. Djentleman Dan

    Djentleman Dan Tele-Holic

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    That's what she said?
     
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  8. Jammin'John

    Jammin'John Friend of Leo's

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    Yes I know about shielding but I will rephrase. You have a certain amount of hum with just the 90 on. When you have the hummer on too does the amount of hum decrease ?
    I would think that since it's only half of the resultant sound it would hum 50% less than it did.

    JJ
     
  9. Paul G.

    Paul G. Friend of Leo's

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    P90s hum under bad conditions. They do not much of the time.

    I wouldn't worry about it.
     
  10. fatcat

    fatcat Friend of Leo's

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    In mine the difference is negligible.
     
  11. Jammin'John

    Jammin'John Friend of Leo's

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    Great. Thanks.

    JJ
     
  12. littlebadboy

    littlebadboy Tele-Afflicted

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    Same as mine!

    [​IMG]

    GM Dirty Digits humbucker on bridge with 1 meg vol pot, GM P-94 on neck with a 500k vol pot on my cheapo Epi Spec II goth. It has no tone circuit. It has a roller bridge too.

    It roars on the bridge, creamy when switched to neck, gets interesting when both are activated together.

    Didn't notice any hum on the GM P-94.
     
    Last edited: Oct 28, 2018
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  13. LoveHz

    LoveHz Tele-Holic

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    I replaced the neck humbucker on my Hamer suburst with a Duncan Phat Cat p90. Works for me.

    20161009_105917.jpg
     
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  14. Nickadermis

    Nickadermis Friend of Leo's

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    This may be an answer to a question I’ve been pondering! :)
     
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  15. TRexF16

    TRexF16 Friend of Leo's Vendor Member

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    If your neck humbucker is a 4-wire you can play around with which of the 4 leads you solder/tape and which you run as hot-ground to make the center position completely hum cancelling. Can't say which HB wires to tape off without knowing all the particulars on both pickups, but you can figure it out on your own rig easy as pie.

    Good luck,
    Rex
     
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  16. fatcat

    fatcat Friend of Leo's

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    True you will want to test them to get them in phase.

    I soldered up a few test leads and directly tested the pickups while they were in the guitar. Plug it in and strum it. You'll be able to tell easily. They will either sound loud and proud together; or weak and quiet.

    Loud and proud is obviously the right way around.

    I had a thread on the upgrade I did. It's called "Modding a guitar for the sake of Modding". Or something like that.
     
  17. fatcat

    fatcat Friend of Leo's

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    Found a picture
     
  18. Jammin'John

    Jammin'John Friend of Leo's

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    Everyone did the neck pup. My bridge pup is the wimpy one. I've swapped pups on my tele/strat partscasters but these semihollow guitars look like it's way more involved.
    You have to pull the pots too ? I have 4 pots on mine.

    JJ
     
  19. fatcat

    fatcat Friend of Leo's

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    I went ahead and built a circuit and did the whole thing while I was in there.

    But yes for a semi hollow you have to take out everything. Involved.. but I figured out the tricks that help. I studied around this great forum, and others.

    Neck or bridge, electronically, process is similar.

    Hey, forgot to ask, what kind of guitar are you modding?
     
    Last edited: Oct 29, 2018
  20. awasson

    awasson Poster Extraordinaire Silver Supporter

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    Once you’ve been through it a few times and as long as you know you’ll be dedicating the better part of a day to it, rewiring a semi-hollow body isn’t terrible. You do need to accept that it will take time and you need to fashion some tools to help you with manipulating and positioning the pots and jack. I usually use stiff wire to help me with the Jack and the posts aren’t too bad for me. Lots of guys use surgical tubing around the pot shafts to pull them through.

    I layer some painter tape around my lower F-Hole to protect it as I’m moving the wires and components and to protect from any splatter from soldering. You have to take it slow and steady. Take a break when you need to. It’s not going anywhere and you just have to work through it.

    I’m considering putting in a set of humbucker sized P90’s (P94) into my 1981 Ibanez AS100. I’ve been looking at the GFS Dream 90’s with a RWRP neck. I’ve also been looking at the A2 models from Donlis. Any recommendations? This guitar is a real gem so I’m not opposed to spending some money on a good set that I’ll keep in it.
     
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