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.

Tuesday, August 21, 2018

Maxon CP101 Compressor

Stumbled across the schematic for this compressor and couldn't find a layout for it. So I drew it up. This follows the original red box version, not the black box reissue. It's an optical compressor and apparently fairly subtle. I couldn't find any info on the vactrol used in the original–sockets are your friend. Should be an easy fit in a 1590B.


15 comments:

  1. Theres any difference with LM741 chip?

    ReplyDelete
    Replies
    1. This comment has been removed by the author.

      Delete
  2. Is that 500 ohm trim to regulate voltage?

    ReplyDelete
    Replies
    1. No, it allows you to adjust the high pass filter I think.

      Delete
  3. Does anyone used germanium transistors ? Thank you!

    ReplyDelete
  4. How should the photoresistor resistance be ?

    ReplyDelete
  5. what is LDR and what is the value ??

    ReplyDelete
  6. How to reduce sound hiss?
    Please reply?

    ReplyDelete
  7. DON'T use a 741! They hiss really badly

    ReplyDelete
  8. This comment has been removed by the author.

    ReplyDelete
  9. Verified..
    But, I want to know that 500ohm trim pot..., what is that for? Is it a attack/release knob?

    ReplyDelete
  10. Im not a compressor fan,but i made this for a friend,you can verify this,it works,with some tiny noise but bearable,and..i still dont know what a compressor really do πŸ˜…πŸ˜…πŸ˜…

    ReplyDelete