Pages

▼

Monday, May 11, 2015

Oz Compressor

Here's an interesting LM386-based compressor designed by Brett Robinson (DIYSB member Toney). I found the schematic for this while searching for something else. Apparently there are various incarnations (and names too) of this circuit, but this seems to be the most popular version. Should fit easily in a 1590A, though, I'm not sure about board-mounting the pots. You might have to get creative there...


at

12 comments:

  1. UnknownAugust 21, 2015 at 8:51 PM

    I'm having a little trouble with this one. It "works," but it's practically an overdrive, even with a Tele, if that makes any sense at all. All of my soldering is clean. Any suggestions?

    ReplyDelete
    Replies
    1. UnknownAugust 21, 2015 at 9:03 PM

      I really shouldn't even say overdrive. It's just fuzzy and kind of pulses if you let a chord ring long enough.

      Delete
    2. dtgehringAugust 22, 2015 at 12:27 PM

      Double check your voltages. Here's the original thread on DIYSB for this circuit.

      http://www.diystompboxes.com/smfforum/index.php?topic=41768.0

      And another trouble shooting thread as well.

      http://www.diystompboxes.com/smfforum/index.php?topic=74407.0

      Delete
    3. UnknownAugust 21, 2017 at 5:09 PM

      hi, have you fix problem? can not read diystompboxes "you are banned from using this forum!"

      Delete
  2. UnknownJuly 12, 2017 at 9:47 PM

    built this one and works great.

    ReplyDelete
  3. UnknownJuly 14, 2017 at 4:56 PM

    Verified.

    ReplyDelete
  4. DavidMauroAugust 25, 2017 at 1:06 PM

    hi! work fine on bass?

    ReplyDelete
  5. DavidMauroSeptember 14, 2017 at 6:53 PM

    HI! I am using lm386n-4 and it distorts, which lm386 IC recommend Tkyou

    ReplyDelete
    Replies
    1. Effects LayoutsSeptember 15, 2017 at 10:13 AM

      Not 100% sure off the top of my head, but check the thread on DIYSB linked above.

      Delete
  6. Samuel BudiyantoMay 26, 2018 at 12:17 AM

    Use 2N7000 istead of BS170, 1N5819 istead of 1N4148, use 2,2uF instead of 4,7uF, and replace 1K resistor with 10K trimpot; my prototype work very very good, but I have an idea that make it work better: put emitter follower transistor, actually act as BUFFER before this layout.
    Clean - Compress - Smooth -bright tone.

    Thanks for this layout, mate!

    ReplyDelete
  7. nicolas giaccariJune 27, 2020 at 3:19 PM

    hi there, i wanted to know how to connect the potentiometers. because the 10k potentiometer wouldn't be working for me. thanks.

    ReplyDelete