Saturday, 2 January 2016

EarthQuaker Devices The Warden - ON HOLD -

05-02-2016
Better put this on hold because there seem to be something wrong with the schematic.
I'll fix the layout as soon as it will be corrected.

Original Info:
The Warden is an optical compressor with a feature set usually reserved for studio grade units. Built with high grade components and internally powered by 18v, The Warden has loads of gain and sustain on tap. With complete control over attack, release, sustain and ratio, The Warden will allow everything from a heavy squash with fast attack and release to “barely there” subtle compression. Optical compression has a reputation for having more character than a VCA or FET based compression and The Warden is no exception.

This is based on the latest schematic.
The 2M2 resistor is used to tweak gain and sustain to the mounted optocoupler.
You can find the original FSB thread here





03/02/2016 Layout Updated:
Changed 1M resistor between IC1 pin 3 & 5 to 10M and inverted D6.

26 comments:

  1. Ooh... this is the first I've seen of this pedal. I'm really hoping someone can verify this. I'd love to build it! Thanks for putting it up.

    ReplyDelete
  2. Anyone working on this? Would love to see it verified as well!

    ReplyDelete
  3. amazing , i have waited for that for years , some body who verifies it ?

    ReplyDelete
  4. I'm working on it currently. Having to substitute a few parts I don't have (using a different opamp, difference charge pump IC, different transistors, different pot tapers since I don't have a reverse log 1M pot). All of these changes are based on convenience, and all the replacements are close enough in spec to the originals to test the circuit.

    Hoping to have it up and running by tomorrow, if the layout is correct.

    -Ryan

    ReplyDelete
  5. I've just started one and plan to do the same - I'm going to try a Vactrol as well..

    ReplyDelete
  6. Built it up, all good except for wicked feedback at the lower end of the sustain pot with the 2m2, luckily I socketed it and found with mine a 470k just about killed the feedback and gives you the full sustain range. I used a 1MC though so you may find you get more feedback in more of the range with different tapers. Definitely needs socketing! Ideally this should be a trimpot, but that's probably not practical (do they make trimpots bigger than 1m?) Sounds great by the way! Built a compulator a while back and this blows it away.

    ReplyDelete
    Replies
    1. Just out of interest, which components did you substitute, and what for? I've used 2N3904s instead of the 5088s and MPSA18 (got some on order though), and I used a 7660SPCA instead of the 1044 (upped the zener diode to 12v too).

      Delete
    2. I used a 7660S too, but I had 2n5089s and MPSA18s in the drawer and the 2134P is pretty central to the sound, so I ordered one of those in. I only had 1M dark LDRs so I put a 1M across it. I think you'll struggle with 2n3904s for everything, their hfe doesn't really compare to MPSA18s and 5089S.

      Delete
    3. Yeah, thought so. first batch of transistors arrived today and the rest should be here pretty soon. Thanks for your help in sorting this - looks like a really versatile compressor.

      Delete
  7. This comment has been removed by the author.

    ReplyDelete
  8. All the above components now in place, I 'm passing signal, and the controls seem to work, but there's distortion in the output - must check my wiring and joints later on.

    ReplyDelete
    Replies
    1. I have the same problem...it's my second try (first, I built it using this PCB: http://effectslayouts.blogspot.ro/2015/07/earthquaker-devices-warden.html)...I have a lot of distorsion...I replaced the 2.2M resistor with a 4.7M pot, but with no luck...hope to find a solution!

      Delete
    2. Yup, the only changes I made were to use ceramic caps for the 22nf, and a 12v zener diode for d1 (7660 will take a higher input voltage than the 1044)

      Delete
  9. Here is the topic about The Warden on FSB: http://www.freestompboxes.org/viewtopic.php?f=7&t=22661.

    My clone distors very much when I'm maximizing the Attack and Release pots. Yours has the same behaviour?

    ReplyDelete
  10. Wondering if anyone can verify this layout yet? I'm keen to get started I've got parts on order but doesn't look like anyone's got it running properly yet?

    ReplyDelete
  11. There was a mistake in the schematic:
    The 1M resistor between IC1 pin 3 & 5 is supposed to be 10M.
    Don't know if that would fix the distortion.

    ReplyDelete
    Replies
    1. I noticed this yesterday and posted in the FSB forum yesterday asking if this would be the cause. Here's hoping between there and here, this schematic gets verified! Can't wait to build it :)

      Delete
    2. Hi Aaron!
      I've changed it after seeing your post.
      I hope that was the cause of the distortion and that would fix it!:)

      Delete
    3. Me too. Guitar fingers crossed!

      Delete
    4. Unfortunatley, I changed the 1M resistor with a 10M one, but with no luck at all...the distortion it's still there...and it's strong!
      Anyway, thank you very much Aaron!

      Delete
  12. Great.
    Sorry to hear that.
    I've also corrected D6 orientation but that won't change anything about distortion.
    I better put this on hold until it will get fixed.

    ReplyDelete
    Replies
    1. If I read the FSB forum correctly, a user switched the orientation of D6 (I assume to the orientation you have it set at now), and the distortion disappeared...? Hopefully someone can confirm.

      Delete
    2. Can anybody confirm if this is true? Does the new orientation of D6 solve the distortion issues?

      Delete
  13. This comment has been removed by the author.

    ReplyDelete
  14. Oh man, I really hope someone finds what the problem is! I'm dying to build this one. I've been reading all the FSB replies for about 17 times now, haha.

    ReplyDelete