I’ve been planning to try a swell effect for some time now and I finally got around to doing it last night. The schematic for this vero layout is based on, I believe, an old Japanese electronics article from way back that mictester of freestompboxes did some modifications to. Anyway, I put the circuit together last night and it works nicely! This one is verified.

Related Posts

9 thoughts on “Envelope shaper / swell

  1. Hi Harald,

    I am a first time poster here. I’ve built Your Swell/Envelope Shaper but there is no output. But there is a signal at On/Off Switch Pin 1, 2 and 3 (which doesn’t make sense when switched on and off. The Gain Led swells fine. There is a slight swell signal at IC2 Pin too. All pots seem to influence the swell. So I guess it is my wiring or something wrong around the output area. The trimmer doesn’t do anything neither. G of the Fet has signal but S and D seem to be dead.

    Can You please email me the schematic You have, so I can have a look, please?

    All the best!


  2. I have to be honest. I can’t really remember what it sounded like, but I vaguely remember being underwhelmed by its performance.

  3. Dear Harald!

    I would like to try this.

    In your build / test, have you noticed any radical change in the original tone of the guitar sound ?

  4. Sorry Sergio. I used this circuit for parts long time ago. I don’t have it anymore. Besides, I wasn’t that happy with it, it was just OK.

  5. Hallo, would this be possible to hear some demo from this one, on his own and working with other fx? Thank you so much

  6. Trying to find out where I got the schematic, but am falling short. Will have another look through my bookmarks tomorrow, sorry 🙁

  7. I would like to try building this. Can you point me to a schematic? Thank you.

Leave a Reply

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload CAPTCHA.