This is an obscure octave down fuzz from Italy, manufactued in 70's. The three pontentiometers adjust normal fuzz, one octave down and two octave down. Note that I made small mod to this one since the original SAJ110 IC is long gone obsolete and expensive. It is replaced with a CD4024 binary counter and divider IC.
A J-FET / MOSFET amp emulator of Krank Krankenstein. Very interesing transistor setup with MOSFET and silicon diodes in some of the gain stages. Schematic specifies KP303s for the J FETS but western analouges is J201 and 2N5457/58. Managed to keep it reasonable small so the brave one could try to fit this 6 knobber in a 1509B box....
MTK has played around with some one knob fuzzes and expanded it to a 4-knob domm/sludge machine.
Product description ;-):
The Stony Meat Face Ritual Fuzz combines the best parts of three of my favorite pedals. The grindy bite of the DAM Meathead, the raw low-end of the BAT Ritual Fuzz, and the phenomenal tone shaping of the Grind Custom FX Ultra Stoner. The SMFR is a fully saturated fuzz that can push the mids for growly stoner riffs or head down into the doomy thickness and anywhere between.
A pretty cool variation of MXR Blue Box with a few extra bits and features. The only thing that is a bit unclear is the switch that selects between one octave down, 1/2 octave down and 2 octave down. Original has a 3 position slider switch but I would like to convert to a toggle switch (3PDT on/off/on or DPDT on/on/on?) or maybe a rotary but I'm not sure how to tackle it. Layout has the switch labels per the schematic which can be found in this link: https://music-electronics-forum.com/filedata/fetch?id=829397
*update*7mike_p found a solution for the switch. See hit comment below.
Couldn't resist to add another layout for the Blue Box since there is a bunch of mods online...
One untested mod that could be fun to try out would be replacing 330ohm resistor that sends voltage to the CD4013 IC with a small value potentioeter for a starve control since those chips can behave quite funnilly at different voltages.
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This was a request. Primary intended for the fuzz section but could of course be used as a stand alone unit.
Cranked Neil Young toanz in a box with an interesting sag/bias control labelled Volts. And yes....D4 is going nowhere....
Updated 201224 and now drawn from a schematic without bugs, avaiable HERE.
Latest version (V3) of a square wave fuzz with a PLL IC to achieve ring modulation.
Schematic and info is avaiable HERE.
One of the craziest things I've heard. An op amp fuzz that tickles a Phase Locked Loop IC from one of my DIY heroes, Fredrik Lyxén of Parasit Studio. Schematic, demo and more info HERE.
A TS with bandaxall tonestack, a germanium transistor wired as a clipping diode and a high fidelity op amp. Schematic is avaiable HERE.
There has been several schematics of this one over the years, each one having some bugs. But recentrly Lacesensor at FSB managed to do a proper trace and he posted thr corretions at FSB.
