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.

Thursday, February 12, 2015

Earthquaker Devices Speaker Cranker

Here's a simple one that should fit nicely in a 1590a. EQD's take on the Electra Distortion circuit. Instead of having a pot coming off the end of the circuit, the volume is controlled by a pot coming off the emitter of the 2N3904. It's really more of a gain control than volume and if you wanted to, you could add a master volume control coming off the output. Who doesn't love more knobs, right?


6 comments:

  1. Great layout, pedal and blog! :)

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  2. The best Electra's based boost!

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  3. It seems that the pot is b10k
    http://i.imgur.com/8O6zn56.jpg

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  4. Have you ever considered adding the schematics as well or do you just do the layouts based on tracing out the existing pedal circuit board? By the way, amazing site, I can't imagine the amount of time you have spent on this.

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    Replies
    1. Thanks, man! Most of the schematics can be found either by googling for them or looking on Freestompboxes.org. Guys over there trace a lot of stuff.

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