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.

Friday, June 30, 2017

Emanating Fist XB-70

The XB-70 is a clone of the Captain's personal '77(?) Guild Foxy Lady, which were built by Electro Harmonix and generally very similar to Ram's Head Big Muffs. In the Captain's own words, "It sounds like torn leather soaked in piss and salt smushed lovingly into ears... It is a brute of a pedal, has a really intense roar at full tilt, like any good Big Muff really." I used my old Ram's Head layout as the starting point, but altered the pot placement and it should be a nice fit in a 125B now.



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13 comments:

  1. kramerianJuly 1, 2017 at 11:51 AM

    Nice layout <3 love transistor placemen

    ReplyDelete
  2. SScottMcA JournalJuly 2, 2017 at 7:37 AM

    Is the trace side inversion correct? Doesn't look flipped.

    ReplyDelete
    Replies
    1. Effects LayoutsJuly 2, 2017 at 8:07 AM

      The trace side is correct. You don't need to flip it.

      Delete
  3. SScottMcA JournalJuly 2, 2017 at 3:55 PM

    Verified

    ReplyDelete
  4. RobotmeisterJuly 3, 2017 at 2:49 AM

    Such a great looking lay out!

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  5. MonjeSeptember 18, 2017 at 12:01 PM

    It worked first, I used all the same values, the transistors tried the BC239C. The sound is spectacular, the layout is perfect. Thank you so much!!!

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  6. UnknownOctober 21, 2017 at 11:07 AM

    I just built this and it works great! Thanks!

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  7. nonlimitblogJune 25, 2018 at 11:46 AM

    please how to wireing FOOT-SWITCH Please

    ReplyDelete
  8. UnknownMay 14, 2019 at 6:23 AM

    He has great build notes here:
    http://effectslayouts.blogspot.com/p/general-layout-notes.html

    ReplyDelete
  9. trevSeptember 16, 2020 at 6:40 PM

    If one was to make this more bass friendly would you switch the 100nf going to tone 2 to maybe 470nf or is it not that simple. I would imagine a change to the input and output caps would help as well? Thanks

    ReplyDelete
    Replies
    1. Effects LayoutsSeptember 16, 2020 at 8:42 PM

      It's likely fine for bass as is, but if you want to play with cap values the 100nF caps would be the ones to mess with. The input cap is already 10uF so it should be fine. Sockets are probably gonna be your best friend here.

      Delete
  10. burn61November 26, 2023 at 11:17 AM

    Hi, I don't find the pcb transfer on the library.
    Apart EHX library, is it in another folder ??.
    Thanks

    ReplyDelete

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