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.

Monday, May 22, 2017

EarthQuaker Devices Talons

A while ago I laid this out for board mount 9mm pots at the request of someone on FSB. Always intended to modify that original layout for use with more common 16mm pots. Turns out it was easier to just lay it out fresh. Anyway, the Talons is a very versatile OD with an active 3-band EQ, and can run off +9v or +18v power supplies.



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17 comments:

  1. faberMay 22, 2017 at 6:08 PM

    hey, just noticed that the pull down resistor on the input is 3k3 ohm, probs a typo with 3M3?
    Great work as always for the layout!

    ReplyDelete
    Replies
    1. Effects LayoutsMay 23, 2017 at 10:05 AM

      Haha, yep that's a typo. Should definitely be M.

      Delete
    2. UnknownJune 6, 2017 at 12:30 AM

      3M3?

      Delete
    3. elbeeukAugust 3, 2017 at 6:08 AM

      Thought it was supposed to be between 2k2 and 4k7?

      Delete
    4. Effects LayoutsAugust 3, 2017 at 8:20 AM

      You're thinking of the CLR for the LED. Input pull down resistor ms are anywhere from 1-10M.

      Delete
  2. Rocky DeeMay 23, 2017 at 3:24 PM

    Do you have a schematic for this per chance?

    ReplyDelete
  3. IvMMay 26, 2017 at 12:31 PM

    ..and even in a smaller board.. you're a genius!
    Thanks
    May I say "an improved Guv'nor"?

    ReplyDelete
    Replies
    1. Effects LayoutsMay 26, 2017 at 12:37 PM

      You could. Though the 2 are pretty different... Soft clipping in the Talons vs hard in the Guv'nor, different EQ sections...

      Delete
  4. AlexSMay 28, 2017 at 3:40 PM

    Built. I also built the 9mm one a year ago. It sounds great with a powerful EQ. Now to build an 18v!

    ReplyDelete
  5. PeteDecember 28, 2017 at 6:55 PM

    I cant figure this out. Hopefully someone can help me. I built this per the layout above. I get some guitar signal thru (tiny amount) but also have a loud steady buzz - like a police siren that doesn't oscillate. I found that I have almost 5vdc on all of my pots, which doesn't seems right. I have had the magnifying glass out, and even etched around traces with my dremel - can't find an issue. Tried different chips and chip types, but the problem persists. I'm not an electronics wizard, so I'm confused, but it sounds like voltage coming thru the circuit to me. I don't have a 3.3M resistor in play anywhere. Is that my problem?

    ReplyDelete
  6. PeteDecember 28, 2017 at 7:27 PM

    I swapped in the 3.3m but that didn’t help matters

    ReplyDelete
  7. JacaHUN2March 9, 2018 at 10:52 AM

    Hey!
    I built this, I just need potmeters and switch to try it out.
    What type of switch should I get?
    Also, I saw the comment about a 3M3 resistor. Which one is it? The one next to the LEDs?

    ReplyDelete
    Replies
    1. Effects LayoutsMarch 9, 2018 at 11:08 AM

      Yeah, the one coming off the In pad. As far as a switch goes, a 3PDT is probably the easiest for wiring true-bypass. But there are a bunch of other ways to do it too... Google's your friend there.

      Delete
  8. UnknownNovember 21, 2020 at 3:23 PM

    One of the best pedals i have ever made, thanks bro.

    ReplyDelete
  9. FernandoNovember 8, 2023 at 10:01 AM

    Would be possible turn it from soft clipping to hard clipping?

    ReplyDelete

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