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, March 28, 2016

Death by Audio Evil Filter

Here's an unreleased version of the Evil Filter. It's similar but not quite the same as the original. The schematic was pulled from a video interviewing DBA's Oliver Ackermann and was redrawn here. Some of the parts are a little pricey but the resulting sound is apparently amazing.

7 comments:

  1. Awesome! I've been wanting to try this, but could only find a vero (which I avoid if there is a PCB version). I'll let you know how it goes :)

    ReplyDelete
  2. Almost finished with the etched version. I'm a bit confused about off board wiring. Are Fuzz In and Filter In both going to Input ? Any help is greatly appreciated.

    ReplyDelete
    Replies
    1. They're 2 separate effects on one board essentially. So you'll need 2 footswitches, one for fuzz and one for the filter.

      Delete
  3. Ah, makes sense. The one in the video I watched only has the one footswitch, so I got confused.

    Is the Wave DPDT switch on/on or on/off/on?

    Thank you! Your layouts always etch beautifully...

    ReplyDelete
    Replies
    1. Yeah, this was an unreleased version. The Wave switch is an on/on. And thanks!

      Delete
  4. I built this one (etched PCB version) a while back. Just found it in my drawer of non-working circuits, thought I should put a little update here. Unfortunately, it's not working (no sound when engaged and bad pops when it's turned on/off). Is there a way to upload a photo here? Maybe if someone sees an error, I can try fixing it so this layout could maybe get verified. I would love to get it working rather than stripping it for parts.

    ReplyDelete
  5. One more try... Has anyone built this? I would love to get it verified!

    ReplyDelete