Schumann Two Face fuzz.

[LaoWiz]

Waiting for The out sound take on this.

Gonna make one for 12XU2A3X3 down the road. New job is killing me! Woke up this morning to 30 work emails from US and UK. Was going to work on pedal stuff but now I'm stuck at the office for endless hours working on a commercial treatment due tomorrow

Will try to bread board this thing next week!

[Gigahearts_FX]

Well, thanks to jerms over at the DAM forum, I finally got to trace the Two Face. I'll tell you right now.... not for the faint of heart. The amount of el cheapo wire that's stuffed into the enclosure is hallucinatory. Take a look.....



I also had a request for a close up of the knobs, so here are some more shots, including the fuzz, and clean board. The 12vac to +/-12vdc board is identical to the PLL, or Lion.















And of course, my trace,





Going to breadboard this in the coming weeks to validate the trace. I've been playing with this over the past few days, and it's a little reminiscent of the Skyripper, but more menacing. It's noisy, buzzy, with lots of Velcro stuff going on. Has settings for oscillation induced screaming, and much of it is interactive with the guitar's volume. Just a plain weird-ass box.

I love it. :icon_mrgreen:

I'll will try (I mean try) to put together a video of this unit in action. I'm not really happy with the videos out there now, since they don't show the guitar volume interactivity, which is important. It just so retarded though, I don't know where I'll start.

EDIT: I've added the power pin numbers to the LF351 in the schematic. I forgot before, sorry.

Unbeleivable that people pay for such dross workmanship

[HorseyBoy]

Unbeleivable that people pay for such dross workmanship

They pay for the sound. Or maybe the rarity/collector value. The dross workmanship is an added bonus.

[imJonWain]

goes to show you though that no matter how gross it looks as long as the paths are correct it'll work... oh Science....

[univalve]

Waiting for The out sound take on this.

Gonna make one for 12XU2A3X3 down the road. New job is killing me! Woke up this morning to 30 work emails from US and UK. Was going to work on pedal stuff but now I'm stuck at the office for endless hours working on a commercial treatment due tomorrow

Will try to bread board this thing next week!

If you have time do make more, i'm Down for One.

Yeah, i know that Job issue... Somehow we have to live

[goroth]

Just watched the demo. That is a beast of a fuzz and the demo is great Dino! Loved the octaves at the beginning and the motor boating oscillation towards the end.

Wow!

Cudos for the trace, and cudos to Schumann for another sweet pedal.

[Sparrow]

cool thread! amazing you could decipher that birds nest.

[11A]

I'm in awe, that's fantastic work!

[digi2t]

Well it's done!!

Bit of a wire monster, but still cleaner than the original. :icon_lol:





The four russian transistors look like silos, full of crazy fuzzy goodness.



Controls are basically the same, except I seperated the Drive pots, and added germanium doide selection for the clamping.





The other changes I made was using TL071's instead of LF351's, 1800pF polystyrene caps for the diode clamping, and as I mentioned before, added 1N270 diodes for added craziness. the 1800pF caps replace the 33pF, and 47pF caps. I found that upping the values stabilized some of the oscillation settings. I just didn't like the LF351's either. The drive seems to be much more stable with the TL071's.

As for the fuzz, at it's mildest, it's like the love child of a pissed off Big Muff, with an Uglyface, and a Skyripper being the crazy uncle. Very hard squarewave. From there, velcro, mosquito, octave jumping, motorboating, oscillation of every audible frequency, and then some. It's a knob twiddlers dream. Linking the two circuits, you can affect one side using the oscillation from the other. Craziness! The seperate drive pots really add to the attainable textures, and the lower Vf of the germanium doides can push the oscillation to different levels. Totally interactive with the guitar's volume, and tone knobs as well. With the right settings on the unit, you can have oscillation on demand using the guitar's controls. My fav setting right now is one where a short burst of oscillation can be initiated by pick attack. I hit a chord or note hard, and a short blast of oscillation cuts in, followed by the chord or note. Less pick attack gives you the normal chord or note. Too cool. :icon_cool: Mixing in clean signal just adds more texture to the whole shootin' match. And then, just when you're blowing ear drums, you can kick in the boost, and melt some brain cells as well.

Video coming soon, maybe tomorrow. I still need some time to write down the settings for the demo. If I don't, it'll be like a 3 hour never ending video, and last thing you need, is my ugly puss on your screen for longer than is absolutely necessary. :icon_lol:

[12XU2A3X3]

Thank you Dino!!!

[DannDubbleEwe]

DUDE.

[Sparrow]

you tamed the Rainbow !!

[intothegroove]

Gorgeous buddy excellent work

[goroth]

DUDE.

[Chankgeez]

NIce work, Dino.

THOSE RUSSIAN TRANSISTORS.