How to test humbucker: series vs parallel?

Discussion in 'Just Pickups' started by Turbogoon, Sep 2, 2014.

  1. Turbogoon

    Turbogoon Tele-Meister

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    Hi all,

    I have a Music Man bass hum buckerpickup. How do I know if it is wired in series or parallel?

    cheers
     
  2. sjtalon

    sjtalon Doctor of Teleocity

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    Howdy Turbogoon

    I assume it has four wires.

    Do you know what model it is ??

    If you check out these dc resistance readings, and get quite a bit less when you test, then it is wired parallel.

    http://www.seymourduncan.com/comparetones

    For instance the Vintage for P Bass hb would be 11.6 KΩ or about 2.9 KΩ parallel.
     
  3. waparker4

    waparker4 Doctor of Teleocity Ad Free Member

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    Take a look at the wiring.
     
  4. Turbogoon

    Turbogoon Tele-Meister

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    Thanks sjtalon. This is really helpful. Basically, the MM Sub (USA version) apparently came out the factory with some models in series, some in parallel (this is unverified BTW!)

    So if there are four cables coming out to the wiring then I can be sure it is series - that is what i'm assuming from your post...
     
  5. Telenator

    Telenator Doctor of Teleocity Vendor Member

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    It is most likely wired in series.

    Series is louder and fuller sounding.
     
  6. KenH

    KenH Tele-Holic

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    For series, two of the 4 wires will be joined together and taped off. Only single conductors will be connected to your controls.
     
  7. sjtalon

    sjtalon Doctor of Teleocity

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    Right, can you look how it is wired. From the pickup to the switch. If they did parallel, it would most likely be a 4 wire pickup to accomplish that.

    So here are some diagrams that shows how it's done with the coil leads. Some (as you most likely know) will wire a humbucker to a switch so they can have the selectable option to have it either way.

    http://www.jacksinstrumentservices....tronics/Humbuckers-in-parallel-and-series.jpg

    coil splitting:

    http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=coil_splitting
     
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