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.




27 comments:

  1. ...printing transfer image! :-)

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

    :D

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

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

      Delete
  5. 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. 1n4007's are improved 1n4001's.
      Both do the same function; protection.The 4007 are capable of protect for more power.

      Delete
  6. 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!

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

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    2. 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..

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  8. 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. 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.

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

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

    ReplyDelete
  11. Can i replace trimpot with normal pots?

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

      Delete
    2. Thanks for the response ๐Ÿ˜Š

      Delete
  12. 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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