I received one of these in for repair. First thing that struck me odd was the spaghetti of wires. Then I saw the diodes and cap on the input jack. Now I had to trace it and figure out what was going on.
It says true bypass right on the front by the footswitch. :)
I couldn't read the value of C3. It's kind of rubbed off. I don't know the value of the drive pot yet either. Everything else seems correct though believe it or not. I'll have this for the next week at least so if you want me to...
Here are some pictures of my personal Dunwich Wizard Fuzz #85. As it's quite a rare and now unobtainium unit, I decided to trace it.
I carefully took it apart, unsoldered all components, measured the resistors with a multimeter, measured the transistors with Atlas DC55 and noted everything down.
Then I traced it using Illustrator and drew a schematic on Kicad. I made sure my schematic doesn't contain any error, as I redid the original pcb layout on Kicad.
Hey all, Joe from GBE here.
Found this Barber Edge Hog on Reverb, seems like a pretty under-the-radar pedal.
Did a video on it for my YT channel. Sound samples, gutshots, similar schematics, etc.
Basically a Rat with germanium diodes and a second opamp stage for the bass control.
This thread has gone on to be +33 pages, almost 600 posts and 70.000 views. We should give out awards to builders, or rather: to marketing departments. This looks like the hype of the year. The thread used to be longer even; I have cut out all the banter, speculation, but kept to the rule that any discussion on the circuit should stay. Took me a day or three to wade through this... I might still split off all Build reports, which would cut down the thread to 11...
Apologies in advance if I have posted this in the wrong section, I didn't think of it as a request as I have some pictures to share, albeit not great ones!
Really like this sound of this pedal and am hoping to build my own one, other forums have suggested a similarity to the DAM Sonic Titan or ROG Grace/Big Daddy due to the LM386 usage but it doesn't look quite the same as there are two of 'em? I'm no expert on these things so thought I would pass along to other more savvy people! There is...
Hi
Let's try to trace this
This pedal came on a mini mini bomb, which was based on a single JFET transistor
The mini bomb schemaешс is presented below
Sch.png
Inside the pedal there are 3 transistors, one in conjunction with a diode (similar to SHO)
As well 2 transistors in a pair (something similar to mu-amp)
In the Ruby Red & Kilt pedals, a new booster is also being used (which is similar to the components with the Prestige stuffing).
JHS describes this as a 2-stage booster.
Guts
GMD has something called the Wave cannon on the board.
I like the look of it. Very retro 50's style graphics. My total non-expert look at it, feels like a Fuzz factory style arrangement. 4 knobs with much oscillation. Check it out and report back....I m curious.
Hey Guys,
I said I'd upload some gut shots I've collected. To start here is one of the Sound Shank, a custom pedal by Earthquaker devices. 3 AC 125 transistors.
I'm working on VERO layouts for the Blade VSC preamp and I'm also trying to create one for only the Mid-boost part of the preamp which I think is very nice!
Since I'm a beginner I'm learning as I'm going, working with bread board layouts and schematics and trying to create veroboard layouts from there.
It would be great if I could get some help with the layouts I'm creating!
The schematic for the Blade VSC preamp:
I've created this vero layout for it. I've verified the mid-boost part for...
First post from this long time lurker. I've had this bass distortion pedal for many years, but I still haven't seen anyone checking out its circuit, so I decided to try. It's handmade in Norway by the small pedal builder OnkartGromt. Info:
Getting the PCB out of the enclosure was quite a challenge, at least without de-soldering the DC input and the two mini-switches. But I wrestled it out and took decent pictures of both sides. Figured out the circuit, whose design is far from a typical TS...
I had a Seymour Duncan SFX-04 Twin Tube Mayhem for repair, and the owner let me trace the pedal.
I didn't include the Power section, because I think it is the same from the SFX-03. Except for the power section of the ICs which is powered by regulated +/-12v.
I believe I traced the circuit properly, but feel free to recheck if you have the same unit with you.
Edit:
I forgot to include the path of the heater. +12v connected to pin six of V2, pin 3 of...
I got one of these off ebay a few years back. I loved it but got rid of it when I stopped using it after a while. I figured I would just build my own.
I photographed the guts just in case I needed reference but when I eventually built my own I could not find the photos anywhere. I remember it had the silver mods. I think that was just replacing the tant caps for Panasonic electros?
The one setting I really liked was the + setting. From Mike's site:
Hello everybody, here are some photos of the Eclipse, i desoldered some components to expose traces, I will post part values and components in the following days.
I will also post my schematic when I will have time to trace, but if somebody wants to start the photos provided should be enough for the purpose.
Missing ICs in the photos are CD4053
I'm seeking for this pedal since a while. I only know it's a relative of the Roland AF100 BeeBaa (fuzz only, without the booster).
I was able to find a gut shot on reverb, and by roughly comparing it with a regular Roland BeeBaa schematic, I came to the conclusion that it shall be something like this.
PCB is double sided, so I can 't properly tell all the connections.
What do you think?
Great sound, obviously the circuit has been modded.
Here's what KMA say:
We refined the circuit to get an old school sound with a modern Twist. First of all we brought back the low end and added a bias control to explore new capabilities of the forgotten pedal. The essential SKIN/MEAT knob controls the bias of the circuit. You can dial in a sharp skinny fuzzy tone or a thick and meaty wall of furry.
Here's what I can figure out so far:
Q1 2N222 metal can
Four 1N4148 clipping diodes...
Just came across a clip of this and I like what I hear. It's silicon and Bender-ish and that's about all I could find. Enclosed are two gut shots, sadly without visible what transistors are used and no shots of the trace side.
you can see more gut shots at 1:34-1:45 and 2:23-2:31 min
with several gut shots. The most important one (the PCB) is in view from 1:40-1:58 min.
I recently got a LAL Green Monster, a super rare fuzz and long discontinued pedal by LAL.
Since I opened it to clean it a bit, I decided to take also some gut pictures.
Some notes to the pictures:
True bypass 3PDT footswitch
Pots: Vol 10kB, Sens1 10kB, Sens2 10kB, Sens3 50kB
Wiring: Green GND, Yellow OUT, White IN, Red +9VDC
Opamps are both UA741CP, and there are only 2 components which maybe are a bit tricky to track.
These look like 2 diodes: the black one in the middle of the board (I...
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