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Wiring help needed: Adding Active/Passive switch

Discussion in 'Pickups & Electronics [BG]' started by awilkie84, Jan 1, 2014.


  1. awilkie84

    awilkie84

    Joined:
    Jul 16, 2011
    Location:
    Nanaimo, BC, Canada
    I have a Jackson CB-XV that I want to add 2 switches to, both to add colour options to my sound and to finish the sweeping look of the control layout for when I add a custom pickguard.

    I want to do a series/parallel switch & an active/passive switch.

    The current setup on the bass is 2 EMG 40HZ passive pickups wired with a Vol, Blend & then into a 3-band 9V EQ.

    Can anyone draw me a picture, similar to the Seymour Duncan diagrams, of how I should wire this?

    Also, what value switch should I use for each?

    Any help with this is greatly appreciated. :)
     
  2. JustForSport

    JustForSport

    Joined:
    Nov 17, 2011
    I think Bartolini's site has some great diagrams for that.
     
  3. line6man

    line6man

    Joined:
    Jun 20, 2008
    Location:
    Close to Los Angeles, CA
    I'll draw a diagram within the next few days.
     
  4. awilkie84

    awilkie84

    Joined:
    Jul 16, 2011
    Location:
    Nanaimo, BC, Canada
    Really? That would be awesome. :bassist:
     
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  6. line6man

    line6man

    Joined:
    Jun 20, 2008
    Location:
    Close to Los Angeles, CA
    Start with this diagram, and omit the tone pot and capacitor.
    [​IMG]
    Then, instead of wiring the "output jack tip terminal" connection to the output jack, wire it to the "output from volume controls" terminal in this diagram. Then wire the other terminals as shown.
    [​IMG]
     
  7. awilkie84

    awilkie84

    Joined:
    Jul 16, 2011
    Location:
    Nanaimo, BC, Canada
    Thanks for the help. 1 last question. The switches I need to do this are 2-way DPDT On/On switches, correct?
     
  8. line6man

    line6man

    Joined:
    Jun 20, 2008
    Location:
    Close to Los Angeles, CA
    Correct.
     
  9. RobbieK

    RobbieK

    Joined:
    Jun 14, 2003
    Actually, I think you'll need a 4PDT for the series/parallel (two pickups), and a DPDT for the true bypass.

    Also, you can get 50KB push-pull pots. I haven't seen the jackson preamp, but these things usually use 50KB pots for B/M/T. You could change two for individual series/parallel switches, and put the active/passive true bypass at the volume as a push-pull 250KA. You'd lose the centre notches on two active tone controls, but you wouldn't have to drill any extra holes...
     
  10. line6man

    line6man

    Joined:
    Jun 20, 2008
    Location:
    Close to Los Angeles, CA
    Depends on what sort of series/parallel switching the OP wants. Master series/parallel switching is done with two poles. In this case, the inclusion of a blend pot requires an unusual wiring, to shunt the inputs together in series mode. Individual series/parallel switches for humbucker coils require two poles per pickup, so indeed four poles would be needed to switch both at the same time.
     
  11. awilkie84

    awilkie84

    Joined:
    Jul 16, 2011
    Location:
    Nanaimo, BC, Canada
    So, if I do a master series/parallel, I can use the diagrams as listed above, correct?
     
  12. line6man

    line6man

    Joined:
    Jun 20, 2008
    Location:
    Close to Los Angeles, CA
    Correct.

    Also, I changed the above image. Redownload, if you've saved it.
     

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