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Help with active/passive switching

Discussion in 'Pickups & Electronics [BG]' started by Robert Canfield, Apr 14, 2015.

  1. To those in the know,
    I'm building a bass and need an active/passive circuit that I can put together myself, but I need help with the design. I would like to recreate the John East Marcus Retro 01 (can't afford the $325):

    Active/Passive Switching
    Volume, Blend, Passive Tone
    Boost/Cut - Treble
    Boost - Bass (40Hz)
    Boost/Cut - Mid continuously variable (100Hz-3kHz)

    I can work with the EMG BQS Control ($108), but don't know how to wire the switching, or what volume and blend pots to use. PLEASE HELP>

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