Text only | Text with Images

madbeanpedals::forum

General => Open Discussion => Topic started by: jimilee on August 18, 2018, 04:05:52 PM

Title: Anyone recognize this circuit?
Post by: jimilee on August 18, 2018, 04:05:52 PM
I picked it up somewhere on a trade.
The trannies say S9013-FJ03.


Sent from my iPhone using Tapatalk(https://uploads.tapatalk-cdn.com/20180818/497c2a4e8d53e9ee07a3a353b73dea91.jpg)
Title: Re: Anyone recognize this circuit?
Post by: m-Kresol on August 18, 2018, 07:29:00 PM
maybe it's just me, but there's no picture.
Title: Re: Anyone recognize this circuit?
Post by: 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.
Title: Re: Anyone recognize this circuit?
Post by: stringsthings on August 18, 2018, 09:05:32 PM

I think those transistors are S9013-FJ03.  :D
Title: Re: Anyone recognize this circuit?
Post by: jimilee on August 18, 2018, 09:56:05 PM
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


Sent from my iPhone using Tapatalk
Title: Re: Anyone recognize this circuit?
Post by: 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.
Title: Re: Anyone recognize this circuit?
Post by: jimilee on August 18, 2018, 10:05:59 PM
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.


Sent from my iPhone using Tapatalk
Title: Re: Anyone recognize this circuit?
Post by: somnif on August 19, 2018, 07:06:21 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.
Title: Re: Anyone recognize this circuit?
Post by: EBK on August 19, 2018, 11:01:52 AM
Just ask Mammoth Electronics what it is.

Email
sales@mammothelectronics.com
Phone
405-310-0520
Title: Re: Anyone recognize this circuit?
Post by: 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 (https://www.sabrotone.com/?p=1419)
http://www.generalguitargadgets.com/effects-projects/fuzz-tones/fuzz-faces/ (http://www.generalguitargadgets.com/effects-projects/fuzz-tones/fuzz-faces/)
Title: Re: Anyone recognize this circuit?
Post by: jimilee on August 21, 2018, 01:25:37 AM
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 (https://www.sabrotone.com/?p=1419)
http://www.generalguitargadgets.com/effects-projects/fuzz-tones/fuzz-faces/ (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.


Sent from my iPhone using Tapatalk
Text only | Text with Images