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.

Monday, November 14, 2016

Black Arts Toneworks Quantum Mystic

The Quantum Mystic is probably the most tricked out DOD250 around. It was developed with Mike Scheidt from the band Yob and based on his Grey Spec 250. It features an active 3-band EQ section and can create tones ranging from boost, to classic distortion, to modern doom metal tones.


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10 comments:

  1. Riff WorshipMay 21, 2017 at 8:27 AM

    After building and playing with it for a while the only comment I have is that the gain knob isn't as responsive and doesn't have a lot of range as videos I've seen and heard of the original pedal. Is there any way to fix this? Thanks

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    Replies
    1. Effects LayoutsMay 21, 2017 at 2:23 PM

      Try increasing the value of that pot

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    2. Riff WorshipMay 21, 2017 at 7:19 PM

      meaning? C1M for example?

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    3. Effects LayoutsMay 21, 2017 at 9:39 PM

      Yeah, or B1M would probably work as well if you can't find a C1M.

      Delete
    4. Riff WorshipMay 22, 2017 at 2:01 AM

      Thanks man. Will try it and post what happened

      Delete
    5. Riff WorshipMay 22, 2017 at 3:56 AM

      Can you tell me about your pot markings because there is some confusion between continents as I have seen online. Maybe you could include this in your General layout notes.

      eg: a=log b=lin, c=rev log

      Delete
    6. Effects LayoutsMay 22, 2017 at 9:07 AM

      Yeah, what you posted is the convention I use. This effect is based off the DOD250 which used a C500k pot for the gain control, so I don't think there's a mistake with the schematic I based this off of. But sometimes things need tweaking, so experiment with B or C taper 1M pots.

      Delete
    7. Riff WorshipMay 22, 2017 at 9:25 AM

      Alright thanks man keep up the good work

      Delete
    8. UnknownSeptember 13, 2018 at 11:56 AM

      Hey mate, how did it turn out? Close to the original?

      Delete
  2. vince69May 5, 2021 at 8:52 AM

    This is very close to the original. The only thing that needs to be corrected is the volume pot. It must be an A100K to be like the original. Otherwise all values are correct. I double checked it with the schematic I traced on my unit.
    I just built the perfoard version and it sounds perfect !! Thanks for the good work.

    Here is a link to my adapted layout, with credit to storyboardist for his original work.

    https://www.dropbox.com/s/oe81bobw3by1amp/BAT%20Quantum%20Mystic%20-%20Perfboard%20layout.pdf?dl=0

    And a few gutshot pictures:
    https://www.dropbox.com/s/cmjv3jvx0dzmzya/IMG_3498.jpeg?dl=0
    https://www.dropbox.com/s/7e6zfy0ccmprz9q/IMG_3499.jpeg?dl=0
    https://www.dropbox.com/s/hb7g7aa5j4m57a6/IMG_3500.jpeg?dl=0
    https://www.dropbox.com/s/9x08gn3ckaozolo/IMG_3501.jpeg?dl=0

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