Bumblebee fuzz

bumblebee · Post by **bumblebee** » 20 Feb 2009, 23:56

Here's a fuzz I put together, its actually parts from other fuzzes that I like.
A cobbled together pedal and based on a Simple boost and a Woolly Mammoth.

It sounds big muff-esque, its a cool fuzz and an easy project for a first PCB layout for other noobs.

If you build it let me know what you think.

Edit: I’ve updated the files. Slightly different than the original as I removed the tone stack.(2020)

: Schem

: PCB

briggs · Post by **briggs** » 21 Feb 2009, 00:20

A nice looking project there bumble. How much signal does that stack suck up? I'm guessing the output is easily big enough to compensate though...

bumblebee · Post by **bumblebee** » 21 Feb 2009, 00:28

It does suck a bit of volume in comparison to the circuit without the tonestack but there is still plenty of volume to pass unity by a mile, that's why i didn't bother including the recovery stage.

briggs · Post by **briggs** » 21 Feb 2009, 00:35

yeah, with 3 stages pre tone control it'll be kicking out alotta volume! How are the dynamics? And the reaction to guitar vol roll off? Better than a muff?

bumblebee · Post by **bumblebee** » 21 Feb 2009, 00:39

Yea a little better than a muff, kinda similar to a silicon fuzz face.
Its a very thick fuzz, like the RI NYC muff and has tons of sustain but it never gets muddy.
It goes form scooped(10nF) to extra scooped(20nF) which sounds super cool, I dont know how well it would work in a band but with the guitar on its own its nice.
It has a nice amount of intermodulation too.

If you find it too thick swap the 22uF for 10uF and the 220nF for 100nF, if you want more subs increase the 5.6 nF to 10nF.

briggs · Post by **briggs** » 21 Feb 2009, 00:45

bumblebee wrote:Yea a little better than a muff, kinda similar to a silicon fuzz face.
Its a very thick fuzz, like the RI NYC muff and has tons of sustain but it never gets muddy.
It goes form scooped(10nF) to extra scooped(20nF) which sounds super cool, I dont know how well it would work in a band but with the guitar on its own its nice.
It has a nice amount of intermodulation too.

If you find it too thick swap the 22uF for 10uF and the 220nF for 100nF, if you want more subs increase the 5.6 nF to 10nF.

Why not make a "Thickness" control? Add a 10k-25k pot in series with the 5n6 cap to ground, altering the roll off in the feedback loop and allowing you to adjust the bass response to suit different guitars on the fly....

bumblebee · Post by **bumblebee** » 21 Feb 2009, 00:53

Yeah i could do that,thanks!
Its a versatile circuit and I love messing with it.

briggs · Post by **briggs** » 03 Mar 2009, 18:51

Did you go anywhere with this? Would be nice to know

bumblebee · Post by **bumblebee** » 03 Mar 2009, 23:25

Nope I haven't tried your idea yet but I made a few changes to the schematic after i messed with the pedal again. I have a heap of schematics of this pedal all with slight variations, i can never stop fucking with it.
Among the changes are, more subs and a gate.

briggs · Post by **briggs** » 04 Mar 2009, 00:25

interesting, look forward to seeing it.

bumblebee · Post by **bumblebee** » 04 Mar 2009, 23:03

I updated the original link already.
The gate is just the stock WM style gate BTW.

biggy boy · Post by **biggy boy** » 20 Apr 2009, 02:23

Hi Bumblebee
The 500K gate pot is it a pot or a trim pot?

Thanks
Glen

teej212 · Post by **teej212** » 22 Jun 2009, 00:13

any pcb layouts for this?

MrJulius · Post by **MrJulius** » 14 Jan 2010, 19:15

Schematic anywhere? The original link is dead.

bumblebee · Post by **bumblebee** » 26 Aug 2020, 01:30

Updated the project files above. I’ve lost the original schem, or just can’t find it, as this is what I ended up anyways so that’s what I’ve uploaded.

If/when I find the original version I’ll add it.

bumblebee · Post by **bumblebee** » 16 Feb 2022, 23:42

Edit: Wrong thread/wrong fuzz.

See here for the fuzz I was thinking of.

viewtopic.php?p=289492#p289492