Monday 17 July 2023

Fuzzhead Fx Barbarian Fuzz

 I dug out my breadboard to clear some thoughts and played around a bit. Well, I ended up with one of my top 3 fuzz circuits, Roland Double Beat. It is perfect as is, just added some minor filtering here and there. But the stock Double Beat rotary switch tonestack sucked IMO so I just tacked on the tonestack from Apocalypse Audio H Fuzz which very versitale and simple. Now this is a angry doom machine.

Got no name for it but listened to some Electric Wizard tune Barbarian the other day so...let's call it Barabarian Fuzz, ok?

ATM, the MOJO layout is verified but not the small one.




 

 
 


 


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29 comments:

  1. Joe18 July 2023 at 06:35

    Hm I built the compact layout but with flipped 2N3904's and all I get is a quiet and slightly distorted signal. I noticed the input is missing on the top layout but I stuck it on the 100nf like in the mojo layout.

    ReplyDelete
    Replies
    1. fuzzhead18 July 2023 at 10:46

      Uh oh, sorry to say I made a fuck up with the small layout. I'll upload a corrected one tonight. Sorry for causing a mess...x-/

      Delete
    2. fuzzhead18 July 2023 at 20:34

      The layout is updated. Once again, sorry for the mess...

      Delete
    3. Joe24 July 2023 at 08:09

      No need to apologize, I have you to thank for around a dozen builds that all work, accidents happen. I might come back and build this one from scratch in a few months. Cheers for the layouts though man!

      Delete
  2. Ian18 July 2023 at 11:27

    I'll definitely try this when I'm back in the game!

    ReplyDelete
  3. Fuzz Mountain18 July 2023 at 18:18

    Cool! I also LOVE the double beat so I'll be happy to take a swing at this one.

    ReplyDelete
  4. dm20 July 2023 at 19:31

    Greetings, Fuzzhead! Can you please take a look at Aion FX Argus Fuzz, a clone of DB.

    https://youtu.be/DWyi7I3KNkk
    Sounds gut-grinding, it will be so great if you can find a free time and a will for making this one on vero.

    Schematics is here: https://aionfx.com/app/files/docs/argus_documentation.pdf
    Another one settings suggestion is here:
    https://forum.pedalpcb.com/threads/aion-fx-argus-fuzz-roland-double-beat.17902/

    Thanks!

    ReplyDelete
    Replies
    1. fuzzhead21 July 2023 at 21:19

      Thanks for the headsup about the Aion project!

      Ok, that will be the fourth Double Beat project on this blog. I will post a layout for it next week,

      Delete
    2. dm7 November 2023 at 18:19

      Hi, Fuzzhead! Any success with Aion Argus on vero?
      Your take on DB gained my interest to this fuzz, it would be great if you give us a chance to try another one. Thanks!

      Delete
  5. Emmit21 July 2023 at 11:01

    Any chance you could post a schematic drawing of this thing? I built the small board and it sounds great .

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    1. fuzzhead21 July 2023 at 21:20

      Thanks for verifying the small board!

      I will upload a schematic in a couple of days...

      Delete
  6. j21 July 2023 at 19:55

    Thanks for all of this work you do on this site, I really appreciate it. O\This is likely a dumb question, on the compact version, where is gain 1, volume 1, and input? Thanks again.

    ReplyDelete
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    1. fuzzhead21 July 2023 at 21:24

      Nah, not a dumb question at all!
      Input connection and Volume co 1 connection is added. See the updated layout.

      However, Gain 1 should be left empty since it is wired as a rheostat.

      Delete
  7. J Fontaine22 July 2023 at 05:32

    this looks rad, cant wait. is there a schematic so i can breadboard it?

    ReplyDelete
    Replies
    1. fuzzhead23 July 2023 at 07:44

      Schematic is up!

      Delete
    2. J Fontaine23 July 2023 at 17:38

      Many thanks

      Delete
    3. J Fontaine30 July 2023 at 05:28

      Quick correction on the schematic: The 470k touches base on q1, not emitter. Got it rolling now though! Jud jud jud.......

      Delete
    4. J Fontaine31 July 2023 at 01:17

      I changed the tone stack to a 2 knob bone ray and it absolutely rips.

      Delete
    5. Ckngmad19 August 2023 at 18:40

      @J Fontaine hey man where do I connect input of bone stack to the schematic ?


      Delete
    6. J Fontaine19 August 2023 at 21:05

      After the 220nf/1m. The end of the bone ray goes straight into volume.

      Delete
  8. KG8 August 2023 at 10:37

    Thank you!

    ReplyDelete
  9. summerwolf16 August 2023 at 02:32

    Thanks for posting another awesome build, fuzzhead! I'd never heard of the Double Beat prior to this post but every one of your designs has been great so I thought I'd give it a shot. I built the compact layout and it melted my face off. I'm ordering an enclosure to box this up...and a new face. Awesome work & thanks for all you do!

    ReplyDelete
  10. JaggedKick18 August 2023 at 09:25

    Built the little guy! Harmonically rich ripper, for sure! Nicely done!!!

    ReplyDelete
  11. dm19 August 2023 at 21:43

    Built it. In general - sounds killer.
    But level of noise in pauses is almost equal to useful signal. It doesn't seem like it should be.
    I used 2n2222a in to-92 package, but I don't think it changes things that much. Values ​​of the remaining components meet the requirements.
    Where did I go wrong?

    Also, it has kinda clipping, as when transistor is overloaded by output of the
    hot pickup, although I use a low output pickup. When the attack is soft, the distortion clarity is quite good. Is this a design feature?

    Thanks!

    ReplyDelete
    Replies
    1. summerwolf23 August 2023 at 22:06

      Hey dm! I used 2n2222a (TO-92) and not sure if I'm seeing the same clipping issue. It can get really loud max'ing out the Volume & Tone controls - as they really seem to drive this one and there is a nice hum/sustain depending on the settings (I don't know how the rheostat is supposed to function but the "Gain" seems to act more like depth/shape on mine). I just boxed mine up and am playing around with it this afternoon. I thought about swapping Q1-Q3 values but it sounds so good I'm hesitant to mess with it.

      Delete
  12. Tom19 September 2023 at 08:16

    Snuck this one in tonight. I almost blew up my little tester amp with this thing. Perfect weapon for sacking Rome. Thanks for sharing this A. Hope sis is doing okay.

    ReplyDelete
    Replies
    1. fuzzhead22 September 2023 at 08:22

      Thank you for the kind words. Glad you like it. Sis is doing ok since she is clever and calm fighter.

      Delete
  13. Ben4 October 2023 at 23:56


    Hello Fuzzhead, I built the small board and it sounds great, but I notice that it is missing a 1M resistor between 220nf and ground, does it affect the sound?

    ReplyDelete
  14. turnbuckle14 December 2023 at 22:23

    Yes, it does look like both layouts don't have that 1m to ground resistor.

    ReplyDelete

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