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Anyone recognize this circuit?

Started by jimilee, August 18, 2018, 09:05:52 AM

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jimilee

August 18, 2018, 09:05:52 AM Last Edit: August 18, 2018, 02:56:41 PM by 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

#1
August 18, 2018, 12:29:00 PM
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

#2
August 18, 2018, 12:41:33 PM
Quote from: m-Kresol on August 18, 2018, 12:29:00 PM
maybe it's just me, but there's no picture.

Nope, not just you.

stringsthings

#3
August 18, 2018, 02:05:32 PM

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

jimilee

#4
August 18, 2018, 02:56:05 PM
Quote from: Matmosphere on August 18, 2018, 12:41:33 PM
Quote from: m-Kresol on August 18, 2018, 12:29:00 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

#5
August 18, 2018, 02:58:28 PM
Well judging by the name, component count and values I can see... a silicon Fuzz Face.
Works at Lectric-FX

jimilee

#6
August 18, 2018, 03:05:59 PM
Quote from: Scruffie on August 18, 2018, 02:58:28 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

#7
August 19, 2018, 12:06:21 AM
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

#8
August 19, 2018, 04:01:52 AM
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

#9
August 20, 2018, 02:29:46 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/

jimilee

#10
August 20, 2018, 06:25:37 PM
Quote from: reddesert on August 20, 2018, 02:29:46 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.
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