Phase issue with magnetic - piezo blend

Discussion in 'Pickups & Electronics [BG]' started by SeayBass, Sep 17, 2020.

  1. SeayBass

    SeayBass Supporting Member

    Hi all
    I have a bass with graphtech piezo and a magnetic pickup. There's a volume dip when the pickups are blended. And I hear phase issues. The bass has an audere preamp, which was selected because of its active blend/buffer, which is Effective and convenient.

    However, it doesn't magically solve what appears to be some kind of phase issue. I have switched polarity on the piezo input at the preamp. No change to my ear.

    I am hoping of you know a way to allow me to mix these two pickups without a big change. Is there a simple thing I can add or do here?
    OR a re-do: what is the 'right way' to work a magnetic and piezo pickup together on my bass- do I need to start over to make these play nice together?
  2. walterw

    walterw Supportive Fender Commercial User

    Feb 20, 2009
    so it's an audere specifically made to take piezos?

    and how did you switch the piezo polarity?
  3. SeayBass

    SeayBass Supporting Member

    I don't think the audere is designed specifically for the piezo. But I 'seem to recall' it has an active blend feature somehow to manage buffering of mismatched pickups.
    to reverse polarity I switched the wires at the input of the graphtech system. After hearing no change, I 'seem to recall' switching them back.
    Each of 5 bridge saddles has wires to their input (jumpers if I recall correctly). Then run as a +/- wiring to preamp.