Wednesday, 9 March 2016

Hofner Buzztone

   I know nothing about this pedal, but it seems interesting so here we go :)



16 comments:

  1. Video on how it sounds

    https://m.youtube.com/watch?v=7j0tQwo5oEQ

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  2. That sounds pretty damn good to me. I've got some BC108B and I'll probably build this over the weekend

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  3. Where do I find 25uF caps?No luck on my usual Tayda or Smallbear...

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  4. Alright,thanks.Really like what I heard on the video that was posted.

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  5. The schem that I used didn't specify. I'd start with linear

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  6. I found this quote somewhere else:

    "So, I took the pedal apart and it does match the schematic posted except:
    The transistors are BC172B
    The input AND output caps are 22uf....not 50."

    Not sure if it is allowed to post a link to other diy-boards so I only relay what might be relevant here. In the above perfboard design that would mean the 47nF instead of "50nF", of course.

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    1. Sry, "uF" not "nF". (God, I hate that there's no edit-button... ;))

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  7. To clarify: the guy was refering to an original Höfner/Halifax "Fuzz Tone"-pedal.

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  8. Hey that's a great sounding pedal. Used to be built on a few guitars with a switch on the axe. Killer 60's sound. Hope it sounds like Grand Funk Railroad fuzz guitar.

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  9. Should there be a cut between the 3k3 and 22k resistors at the bottom right of the board? Otherwise it looks like volume 2 is connected to the 9v supply.

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  10. Damn, how did I not notice that. That is ridiculously stupid. Updated and hopefully good to go

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    1. Well, someone else, *cough, whistles tunelessly, looks a bit shifty*, didn't notice until he experienced the magic smoke, bright light and strong burning smell whilst debugging, so I wouldn't beat yourself up about it.

      I've not got any bc108s, so I've tried 2n2222's (hfe ~200), bc107's (hfe inconsistent) s9014's (hfe ~350) and s9018's (hfe ~120). Found it a bit splatty with all of 'em for my taste. Settled on the 2222's in the end. I quite liked the sound with the treble on the guitar fully rolled off with the Buzztone feeding into a distortion pedal, but I don't think this one's going to be boxed.

      Interesting to try such (relatively) large coupling caps, though.

      Cheers for the layout. Much appreciated.

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  11. Hello,
    I built this using ac127's and 33uF caps. I think they fit nicely.

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  12. sample: https://www.youtube.com/watch?v=jmQ6_kvo-Vg

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