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Thread: BX63 replacement?

  1. #46
    Senior Member
    Join Date
    Feb 2004
    Central Coast California

    Smile connections

    Thanks for the link, Lancer. Based on that, I don't need the Soundcraftsmen bridging device.

    Then this is what I plan to do.
    Attached Images Attached Images

  2. #47
    Join Date
    Apr 2003
    NW Montana

    BX63 Replacement - 25 Hz Bump Filter DIY

    A long shot here - need some help. I am trying to build a pair of the filters shown in post #10 on this thread by "4341B", using TL072's. Trouble is, I need to have it work with balanced inputs and balanced outputs, and have no idea how to do that . Can anyone provide a clue how to modify this circuit for balanced ins/outs?

    Many thanks in advance!

  3. #48
    Senior Member Baron030's Avatar
    Join Date
    Feb 2005
    Chicago, Illinois
    You could add a Balanced Line Receiver chip before the first TL072 and a Balanced Line Driver chip after the second TL072.

    Links to some very fine balanced line chips:


  4. #49
    Senior Member bldozier's Avatar
    Join Date
    Jun 2014
    mount kisco
    what is the cut off of the modified 5235.

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