Saturday, 31 October 2020

Electro Harmonix Small Stone V1

 Layout for the first version of Small Stone which was produced between 1974(?) and 1978.

Layout is based on schematic from Lectric Fx

 Note that original had long gone obsolete 8 pin OTA chips so this layout is modernized for easy to get LM13700s.


 

7 comments:

  1. I built this layout, but unfortunately the signal just goes through the circuit, it doesn't work. If anyone has had success, please describe what you changed. Thanks.

    ReplyDelete
  2. hello ! what should i use for D1 ? i don't see it listed. thank you !!!

    ReplyDelete
    Replies
    1. It's a polarity protection diode. Use any silicon diode with a low forward voltage drop, like a 1N5817 or 1N5819.

      Delete
  3. You can also use a 1n4001 diode

    ReplyDelete
  4. thank you guys ! i'm learning a lot

    ReplyDelete