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Sunday, 28 February 2016

Red Wizard Fuzz Stripboard Layout


this is the 3rd guitar effect in the "wizard" collection.
As anyone who has followed this site for long enough will know, I always make my pedals very minimal when it comes to controls but if anyone does add to this circuit I'd love to see what you've done.

anyway, enjoy.





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16 comments:

  1. Kinski28 February 2016 at 20:49

    Sounds really nice. How would you add a gain control? I assume swapping one of the resistors for a pot?

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    1. DrStevenson28 February 2016 at 21:49

      maybe stick a 470K pot in place of R6 or R2

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    2. chumbox 1 April 2016 at 00:16

      Hey Kinski, it's not uncommon to see a 500k pot across where R2 lies and a log 100K pot off the output for volume.
      Paul this is a nice sounding fuzz in a similar vein to the muff fuzz but a lot nicer. Time to build.

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    3. DrStevenson1 April 2016 at 00:19

      aye it's kind of like that but less "muddy" and a bit less gain than the muffs

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    4. Ben9 February 2017 at 20:59

      One additional question: Will the 500k pot replace R2 (what about minimum restiance?) or should be parallel to it? Thanks!

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    5. DrStevenson9 February 2017 at 21:55

      replace it or even put it in series with it, experiment. it won't harm it.

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    6. Ben30 April 2017 at 20:55

      Finally I built it. And it sounds great with my Rhodes! I found that it sounds best when the 500k is in series with R2. In this case i have your suggested resistor value as default and can increase gain with the pot if i need a fuzzier sound.

      Thanks for that great circuit!

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    7. Limitless31 May 2018 at 19:27

      How should I wire up the lugs for the gain pot? I don't actually understand how to put it in series with r2, sorry

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  2. Apocalypto18 March 2016 at 03:42

    Sounds good!

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  3. Jennifer2 June 2016 at 09:23

    This comment has been removed by a blog administrator.

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  4. Ben6 August 2017 at 09:26

    Hi Paul. I really love the sound of this fuzz and already built a few for my guitar friends. Now I'm interested how the circuit can be adapted to be more suitable for bass frequencies. Can you maybe give a hint where I can start experimenting? Thanks again.

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    1. DrStevenson6 August 2017 at 12:15

      raising C1 C2 and C5 to 470n or 1u (non polarized) should do the trick dude

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    2. Ben9 August 2017 at 22:10

      Thanks for the hints. I'd like to understand your circuit a bit more in detail. Can you please explain the job of C2 in this circuit? Is it also some kind of AC coupling like C1 and C5 are doing on the input and output but only between the two amp stages?

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    3. DrStevenson9 August 2017 at 23:49

      not entirely, they serve to AC couple however they are part of the filter circuit, the lower the value of these caps, the more of the lower frequencies are stripped away.
      C4 is a more interesting capacitor - this limits the bandwidth of the op-amp (this is why the op-amp selection isn't that critical) - this part is crucial to stopping hissing sound being created and is definitely something you need to know about if you plan on building hi-fi circuits - obviously its more complicated than that and has lots of equations and shit like that but it's easier just to try different capacitors between 10p and 1n until you get it the way you want it

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  5. perfector29 June 2021 at 12:48

    https://youtu.be/XfdcCT2bs98 Many thanks for this Paul

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  6. Ian3 December 2021 at 15:42

    I thought this using the dart box layout schematic with mods. It's fantastic. Thank you

    https://youtu.be/23-jXSeMrDs

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