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Friday, May 27, 2016

Electro Harmonix Big Muff - 1590a

Let's wrap up this 1590a week with one of the mightiest fuzzes of all time–the Big Muff. For this one, I've labeled all the components to correspond with the component names on Kit Rae schematics, so find an EHX version on there and populate the board accordingly. This probably won't work for some of the more modified, non-EHX Muffs, just fair warning. Polarity protection and power filtering have been added, as has a pull down resistor at in put. It's labeled as "PDR" on the layout and would typically be 1-2M. The resistor labeled "CLR" is the current limiting resistor for the LED, and can be anything from 2.2k to 10k.

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19 comments:

  1. UnknownMay 27, 2016 at 9:22 AM

    OMFG

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  2. Joe TafanoMay 27, 2016 at 11:25 AM

    yeaaaaaaaaahhhhhhh
    JOE

    ReplyDelete
  3. UnknownMay 27, 2016 at 11:30 AM

    Little Muff :)

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  4. UnknownMay 27, 2016 at 5:59 PM

    How to fit tone wicker in this?

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  5. AnonymousMay 28, 2016 at 10:49 PM

    can you tell em 1-4 Hfe and Vcc by chance? I am guessing 4-5v?

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  6. AnonymousMay 28, 2016 at 11:39 PM

    I got it working,i was missing an electro cap. I am using 2n5088's and jdsleeps values for the green russian

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  7. WoodstufferJune 9, 2016 at 4:04 AM

    What is "PDR"?

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    Replies
    1. Effects LayoutsJune 9, 2016 at 7:22 AM

      Read the post, man. Specifically the last couple sentences. ;)

      Delete
  8. UnknownOctober 17, 2016 at 11:53 PM

    components?

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  9. ONLYIWILLREMAINMay 20, 2018 at 8:05 PM

    This isn't applicable to the OP amp version,right? Just the old standard lines.

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  10. UnknownJune 18, 2018 at 8:14 AM

    Hi forgive me for my ignorance, i can't find the Schematic on a link that you provided,

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    Replies
    1. Effects LayoutsJune 18, 2018 at 9:45 AM

      Just scroll down. There's like 20 schematics on that page, plus 3 following pages with more schems.

      Delete
    2. UnknownJune 18, 2018 at 11:34 AM

      I found V9 "NYC REISSUE" BIG MUFF placed on 4th pages, and this is the only diagram that has word "Electro hamonix" :D i hope this might be right hahaha

      Delete
  11. UnknownAugust 23, 2018 at 5:53 AM

    Kindly give the value of parts. Thanks.

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  12. RyanbMarch 3, 2019 at 2:31 AM

    What program do you use to make these designs? I want to be able to rtch boards at home.

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  13. SlackMarch 12, 2019 at 12:59 PM

    This comment has been removed by the author.

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  14. UnknownDecember 9, 2021 at 8:27 AM

    Nex repLy

    ReplyDelete
  15. michieMay 10, 2023 at 10:08 AM

    It worked, but the distortion is weak and there is an oscillating sound like Fuzz Factory when the tone knob is turned down. What is the problem?

    ReplyDelete