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Double hum when out of phase

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  • Double hum when out of phase

    I've been doing some wiring mods to my 2-humbucker home-made guitar. I have switching for Series/Split/Parallel for each pickup, and a switch to put the bridge pickup out of phase with the neck.

    It seems to work okay, when i split both humbuckers and put them out of phase - i get that nice strat-esque quack. However, when in-phase, the single coils are hum cancelling, when out of phase the hum doubles!!

    Any idea how i can fix this - can i have it hum cancelling when split pickups are both in and out of phase? If not, i prefer the out of phase sound, so having it hum cancelling for that would be better.

    What do i have to do - spin a pickup round? Turn around a magnet? Or change the way one or both pickups are wired? I'm pretty competent with wiring but this has got me stumped!

    Current: Vox AC30VR, Gibson Les Paul Standard, Edwards Les Paul Custom, Squier VM Telecaster Custom II, Line 6 Variax 600, Davis Stefocaster, Taylor 414ce, Taylor Baby

  • #2

    Okay, I've done a bit of reading up - so the strat 2/4 positions aren't actually out of phase - the out of phase setting on this guitar does have a similar sound though.

    Current: Vox AC30VR, Gibson Les Paul Standard, Edwards Les Paul Custom, Squier VM Telecaster Custom II, Line 6 Variax 600, Davis Stefocaster, Taylor 414ce, Taylor Baby

    Comment


    • lz4005
      lz4005 commented
      Editing a comment

      Doubling hum when out of phase makes sense. When two coils hum cancel you are combining -1 and +1 to get 0. When you put one of those out of phase you get +2.

      Have you tried doing the out of phase sound with the other coil of the bridge pickup?


  • #3
    Try another approach. Split to inner vs split to outer.
    Electrics: Fender '73 Mustang RI, Epiphone Inspired by John Lennon Casino, Gibson 60s Tribute Les Paul Studio, Daisy Rock Retro-H Deluxe, Squier Hello Kitty Strat x2Acoustics: Taylor 316CE-LTD, Seagull Entourage Rustic CW QITBasses: Squier Badtz Maru Bronco Bass, Aria CSB-300, Fender Mustang Bass RIAmps: Vox TB18C1, Vox Pathfinder 210, Peavey Transtube Envoy, Ampeg Micro VR StackMy Band: http://mittensband.com

    Comment


    • pluginbabies
      pluginbabies commented
      Editing a comment

      honeyiscool - would that make much of a difference? If i swap just one pickup to the other coil, won't it not be hum-cancelling any more as they'll be the same polarity - if i swap both pickups to the other coil, won't that just give the same issue as i have now - either the inphase or outofphase setting will have double-hum?

      Forgive my ignorance if I'm wrong - just trying to understand this a bit better!













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