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Friday, 3 March 2017

Dunlop JH-1 Hendrix Wah


I was asked if I could make a layout for the hendrix crybaby, so here she is. not a whole lot different from a regular crybaby. There are 2 additional caps, resistor change, and different value pot. You may be wondering what these changes do, and in short it moves the sweep range lower.

I have one, it was my first wah, which I got used for $30, and personally I like the lower sweep. I've also compared it with a few others I've built, Colorsound Fuzz Wah and aVox, and I feel there's a nice sweet spot with this one when playing single coils. I know there are those that aren't crazy about it, but hey not everyone has the same tastes.




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12 comments:

  1. Unknown3 March 2017 at 22:54

    sounds cool!!!

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  2. Travis3 March 2017 at 23:52

    This was my first wah too! I think it's a pretty good one

    I find the transition from bass to mid a little abrupt, but overall I love the voicing of this one

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    Replies
    1. Zach4 March 2017 at 00:20

      damn it travis, do we really need anything else in common? lol

      Delete
  3. BlueOysterCult4 March 2017 at 07:30

    Nice as usual ! Question : where can we find the hardware ("the pedal") to connect to the electronic ? Merci !

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    Replies
    1. Photo Shoots9 September 2019 at 00:36

      Hello, you can find this stuff on chinese sites
      googling with these words : GEP-2 Wah

      Delete
  4. Unknown19 March 2017 at 20:27

    Hi, just noticed the board is 22 wide not 21

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    Replies
    1. Zach28 March 2017 at 00:39

      thanks man. finally remembered to post the layout with the size correction.

      Delete
  5. Marcello M.24 March 2017 at 14:48

    I'm doing maintenance for one and it uses mpsa18 not 13.

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    Replies
    1. Zach24 March 2017 at 16:42

      Check q1. According to the schematic it's an MPSA13, while Q2-Q3 are MPSA18

      Delete
  6. Unknown8 May 2017 at 23:14

    Has anyone had any "experience" ;) building with the 'standard' Dunlop/Crybaby inductor vs the yellow Fasel?

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  7. Photo Shoots9 September 2019 at 01:06

    Hello Zach

    on the original circuit, there are 7 wires:
    1 - black (ground),
    2 - red (+ 9V)
    3 - black -> Hot Potz
    4 - green -> switch
    5 - yellow -> Hot Potz
    6 - blue -> swith -> Hot Potz
    7 - purple -> switch
    on your PCB diagram I can see only 6 wires. It's quite confusing for me! Can you say more about the two additional capacitors and the resistance values that have changed?

    Regards

    ReplyDelete
  8. Lukes0n17 December 2020 at 14:48

    Hello, i have build it with 100k pot and it looks like im having problem with bias of Q1-2

    ReplyDelete