Pages

Friday, June 5, 2015

Crowther Audio Prunes & Custard

The Crowther Prunes & Custard is a unique distortion box good for both guitar and bass. It's a two-stage circuit, built around a TL072 dual-opamp. The first stage acts as a preamp, and the second stage generates the distortion, with harmonic overtones. I've laid this out for on board pots (long leg PCB-mount pots will probably work best mounted from the component side) and it should fit nicely in a 1590B enclosure. The 2 switches are SPST.



12 comments:

  1. This comment has been removed by the author.

    ReplyDelete
  2. Oooh! I have one of the very first P&C pedals ever made. What a cool, strange, truly unique effect. I'll have to give this one a go.

    ReplyDelete
  3. thanks for laying this out! any idea how the pedal does the filter-sweeping?

    ReplyDelete
  4. I have tried print image to make a PCB. the the prints is quite blury. I believe this because the image is low resolution ( 72dpi).
    Does any one have a higher res image?

    ReplyDelete
    Replies
    1. Did you use the transfer pdf in the Transfer Image Library?

      Delete
  5. What's everyone's thoughts on using 1N34As for the Diode section? Just curious =)

    ReplyDelete
  6. Socket and see how it sounds. I'd think the clipping would be a little softer. Diodes are always fun to experiment with.

    ReplyDelete
  7. You can call it as verified. Work perfectly, like the original..! amazing pedal..!!

    ReplyDelete
  8. PCB transfer image needs to be mirrored.

    ReplyDelete
  9. Great pedal... geat layout... thanks!

    ReplyDelete
  10. Where i live it is difficult to find C and A pots... Can i use B pots as Drive and level? Thanks!

    ReplyDelete