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, February 20, 2017

Earthquaker Devices Black Eye

Here's a nice little MOSFET-based clean boost that EQD used to make. It's actually pretty similar to the Lovepedal Delux 60. Here's the schematic for reference.




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27 comments:

  1. IvMFebruary 20, 2017 at 9:26 AM

    ...printing transfer image! :-)

    ReplyDelete
  2. plushFebruary 20, 2017 at 9:53 AM

    Gonna build one and call it black guy
    http://i.imgur.com/HaSOPOP.jpg

    :D

    ReplyDelete
  3. ernestoFebruary 21, 2017 at 10:37 AM

    Hey!, i made you schematic on a breadboard and it works perfectly,
    Verified

    ReplyDelete
  4. aldoFebruary 21, 2017 at 11:16 PM

    thanks for sharing!!!!
    do you have the danelectro honeytone? I want to build a mini amp to practice quietly and wherever i like!!

    ReplyDelete
    Replies
    1. Effects LayoutsFebruary 21, 2017 at 11:24 PM

      I don't, but look for the Ruby amp. Great mini amp for headphones or a small speaker.

      Delete
  5. javipurasApril 15, 2017 at 5:30 PM

    Hey!Thanks for sharing! I built It and i love The tone, but it has a little hiss sound all The time. Any help? I used 1n4007 instead of 4001 for diodes, does this affect? Thanks

    ReplyDelete
    Replies
    1. IvMApril 22, 2017 at 11:48 AM

      1n4007's are improved 1n4001's.
      Both do the same function; protection.The 4007 are capable of protect for more power.

      Delete
  6. IvMApril 22, 2017 at 11:46 AM

    Super sweet booster/preamp!
    SHO improved version.

    My sugestions:
    -Use sockets, and try 2N7000: more gainy and bright/open sound
    -Replace trimpot with B5K pot, 5k res in outer lugs for gain control (btw: this 5k is the "crackle" pot in SHO).

    Thanks!

    ReplyDelete
  7. UnknownMay 27, 2017 at 5:19 PM

    What might I modify to limit the max volume? For example, if I don't ever need 30db and I want to reduce the possibility of this pedal creating it's own distortion?

    ReplyDelete
    Replies
    1. IvMMay 27, 2017 at 9:06 PM

      I would try to send a 47k from lug 3 of boost knob, to ground to reduce the overal volumen.

      Delete
    2. UnknownMay 28, 2017 at 11:43 AM

      thanks.. I'm planning to combine this with a 'valvecaster' to push a hotter clean signal into the tube.. I might even skip the 'boost' pot altogether and just use an internal trim..

      Delete
  8. guitarJuly 27, 2017 at 12:02 PM

    I wanted to know why the resistor of 10m between the D and G of the BS170 and G for the ground
    It could be a resistor of 2m2 ?
    Thank you

    ReplyDelete
    Replies
    1. Effects LayoutsJuly 27, 2017 at 1:54 PM

      I didn't design the circuit, so I can't speak to why these values were used. This is essentially a zVex SHO, which also uses 10M resistors in that configuration. However since it's basically a voltage divider you could probably get away with something like 2M.

      Delete
    2. guitarAugust 5, 2017 at 6:52 PM

      Ok Thank you =)

      Delete
    3. BZ NiderbergJanuary 25, 2022 at 10:18 AM

      Yes. It will give a little bit of a warmer sound.

      Delete
  9. UnknownAugust 20, 2018 at 11:10 PM

    para que seria el trim de 5k?

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    Replies
    1. IvMAugust 21, 2018 at 10:46 AM

      Source a tierra: ganancia. Este diagrama es un SHO, con volumen master.
      El trim es ni más ni menos que el Crakle en el SHO.

      Delete
  10. fredAugust 24, 2018 at 11:47 AM

    Hi, I dont have a 5k trimpot. can I use a resistor? 1k or 5k?

    ReplyDelete
  11. JunmarFusilleroDecember 9, 2019 at 3:06 AM

    Can i replace trimpot with normal pots?

    ReplyDelete
    Replies
    1. Effects LayoutsDecember 9, 2019 at 1:08 PM

      Definitely. A C5k pot is where I'd start. That would essentially give you a SHO with a volume control.

      Delete
    2. JunmarFusilleroDecember 11, 2019 at 6:34 PM

      Thanks for the response 😊

      Delete
  12. AlejandroMay 12, 2020 at 12:56 AM

    Hi everyone, I've just finished building one of these, it works well but despite being at the highest level, the output volume is anyway lower than the volume in bypass

    ReplyDelete

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