This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Thursday, April 19, 2018

Active Baxandall Network

Got a request for a Baxandall tone stack daughter board, (much like the Big Muff Tone Stack daughter board) and thought it was a great idea as it's a great tone control. The schematic for this came from this article, which is worth the read. I've laid it out two ways, one with board mounted pots, and one without that's a little more compact.


Note on the board mounted pots version the fill on the PCB is not ground.

11 comments:

  1. Verified - I did the smaller layout, on perf.

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  2. where is it placed, before or after the main board?

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    Replies
    1. You could try either place, but I would think after would be the most effective.

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    2. Owsem! Let's see how if it is stacked to OD-1

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  3. can i add a split n blend to make it a new pedal? just asking.. thanks

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    Replies
    1. You could. Or just throw a buffer in front and have and make a 2-band EQ.

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  4. I don't know, man.
    Never have I constructed a baxandall that actually sounded good/useful to my ears. It seems as though the circuit works just to drop the entire frequency range and then allows you to reintroduce the top and bottom end (albeit unfaithfully and never full-throttle).

    Perhaps something in the nature of the baxandall circuit solicits the need for a gain stage prior to the EQ? or even a post-EQ "recovery" stage? I thought the "active" implement here would counteract the need for such? idk

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    1. so, you dont like fx like BB pre, AC/RC, spark booster?
      or you need like 3 baxandall?

      what about James tonestack?

      i think you just want say, baxandall isn't your taste?
      me too. Hahaha

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  5. What about one of these with a Marshall BMT tone stack?

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