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Anyone recognize this circuit?

Started by jimilee, August 18, 2018, 04:05:52 PM

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jimilee

I picked it up somewhere on a trade.
The trannies say S9013-FJ03.


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Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

m-Kresol

maybe it's just me, but there's no picture.
I build pedals to hide my lousy playing.

My projects are labeled Quantum Effects. My shared OSH park projects: https://oshpark.com/profiles/m-Kresol
My build docs and tutorials

matmosphere


stringsthings


I think those transistors are S9013-FJ03.  :D
All You Need Is Love

jimilee

Quote from: Matmosphere on August 18, 2018, 07:41:33 PM
Quote from: m-Kresol on August 18, 2018, 07:29:00 PM
maybe it's just me, but there's no picture.

Nope, not just you.
Bwahahaha


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Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

Scruffie

Well judging by the name, component count and values I can see... a silicon Fuzz Face.
Works at Lectric-FX

jimilee

Quote from: Scruffie on August 18, 2018, 09:58:28 PM
Well judging by the name, component count and values I can see... a silicon Fuzz Face.
That's what I was thinking too, but I couldn't find an exact replica, just very similar.


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Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

somnif

My guess was going to be a Roger Meyer "Classic Fuzz", but the resistor values don't match.

Digging around 2012-2013 Mammoth's website on the wayback machine doesn't show this design either. OSHPark doesn't really archive things in a way that makes digging that far back easy either.

EBK

Just ask Mammoth Electronics what it is.

Email
sales@mammothelectronics.com
Phone
405-310-0520
"There is a pestilence upon this land. Nothing is sacred. Even those who arrange and design shrubberies are under considerable economic stress in this period in history." --Roger the Shrubber

reddesert

Like one of these with the 10K trimmer used to adjust the collector resistor of Q2 (the part that is an 8.2K in a stock Fuzz Face). Maybe the trimmer is in series with the 4.7K resistor.
https://www.sabrotone.com/?p=1419
http://www.generalguitargadgets.com/effects-projects/fuzz-tones/fuzz-faces/

jimilee

Quote from: reddesert on August 20, 2018, 09:29:46 PM
Like one of these with the 10K trimmer used to adjust the collector resistor of Q2 (the part that is an 8.2K in a stock Fuzz Face). Maybe the trimmer is in series with the 4.7K resistor.
https://www.sabrotone.com/?p=1419
http://www.generalguitargadgets.com/effects-projects/fuzz-tones/fuzz-faces/
I'm positive it is a silicone fuzz face. Now I gotta figure out how to make it sound good.


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Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.