DigiTech Bad Monkey MOJO layout

Colorsound Overdriver MOJO layout

 

Roland AD-50 Double Beat MOJO layout

 

Interfax HP-1 Harmonic Percolator MOJO layout

 Compact layout is avaiable HERE.

EarthQuaker Devices Hizumitas Fuzz

 Since I'm pretty much slushed and decked by the Covid flu at the moment, this one will be the last layout for a while... Over and out...but first some marketing spell.

The Hizumitas was designed for the one and only guitar sorceress, Wata, from the legendary band, Boris! We could not be more excited to have the honor of working with such an iconic legend known for her crushing riffs and mind-melting leads. The Hizumitas is a faithful sonic recreation of her go-to distortion which has been a staple of her tone for many years: the Elk BM Sustainar.

 

 

 

 

 

 

Foxx Select A Fuzz MOJO layout

 The last mojo layout for a while. This one isn't one of the classics, quite the opposite. It isne of the rarest vintage fuzzes out there and for the longest time noone knew what the circuit was like until Deadend Fx managed to trace it a couple of years ago. It is a quite heavy affair, especially  when the larger input caps is selected. Fairly low gain NPN silicon transistors is recommended, in the 100-150 Hfe range.

Compact layout avaiable HERE.

 

 

Shin-ei FY6 Superfuzz MOJO layout

 Compact layout avaiable HERE.

Roland AF-100 Bee Baa MOJO layout

 Compact layout avaiable HERE. 

Electro Harmonix V5 IC Big Muff MOJO layout

 Compact layout avaiable HERE.

 

 

ProCo Rat MOJO layout

 Compact layout avaiable HERE.

 

 

Maestro FZ-1S Super Fuzz MOJO layout

 Compact layout avaiable HERE.

 

 

Maestro Brassmaster MOJO layout

 Compact layout avaiable HERE.

Foxx Tone Machine MOJO layout

 Compact layout avaiable HERE.

 

Ibanez No. 59 Standard Fuzz MOJO layout

 Compact layout avaiable HERE.

 

 

 

 

Fender Blender MOJO layout

It is all about the MOJO!  Got a comission to build a bunch of the larger classic fuzz circuits using "mojo" parts, more preciely 1/2w carbon composition resistors and axial electrolyctics/tantalums. It may not be a huge difference soundwise but it is quite fun to build and it looks cool.:-p.

Power filter caps remains radial as well as the film caps but for true MOJO, tropical fish or mustard caps should be used:-). But I will probably end up with Greenies or ceramics. Also, all transistor pinouts will be CBE but if I manage to source some of the harder to find transistors with BCE pinouts, I will do some leg twisting. Note that none of these layouts is verified at the moment and I will start building most of the stuff in a couple of weeks but if anyone fancy building it now...here you go!

First up....Fender Blender.

Compact layout avaiable HERE.

Monolith Oracle Fuzz

 A simple but heavy germanium fuzz using PNP transistors with normal power supply. What not to like?

The original used fairly high gain OC76 cans but others with less gain will work as well. Just keep the leakage reasonable low when selecting the transistors.

Two layout for this, one normal compact and one MOJO with 0,5w carbon comp resistors and axial electrolyctics.

 

 

 

 

 

 

 

Electro Harmonix V2 Big Muff Ram's Head "White Can version" 1974

 It is Pie Day so here is a layout of an old Ram's Head variant. Rarely cloned and some cap values is not found in any of the other vintage EHX variants. 220pF/680pF caps replaces the standard 470pF/500pF values and the tonestack has less mid scoop. Still added a Mid switch for some sligtly boosted mids.

 Note that the FS36999 was house numbered 2N5133s. These varied in Hfe a lot, ranging between 100-800. So socketing may be a wise decision for the transistors.

 

 

...and a mojo layout with 1,2w carbon comp resistors for the purist...

 

Dunwich Amplification Hybrid Cthulhu - 3 knob version

 Another Dunwich trace by evilarsen, AlexS and fuzzhead.

I believe this one was made on custom order and/or was a on/off product. However, compoent values varied over time but we added some notes at the bottom of the layout and schematic for the most significant changes that is worth experimenting with:

Input capacitors connecting to the input cap blend control (Depth) varied quite a bit. I ended up with a 15nF for C2 and an 1uF for C1 with a 100kC Depth control. 

The other thing is one of the clipping diodes at Q4. Most units had a germanium diode but a few had a silicon transistor in TO-18 casing wired as a diode. Both layouts bellow have slots for both components but remember to use one of them, NOT both.

Two layouts, one normal and one with 1.5W carbon comp resistors. Both is verified.

 

 

 

 

 

Electro Harmonix V1 Triangle Big Muff 66#5 - 1969 perfboard version

 Can't believe I haven't posted this one yet since it is one of the better vintage big muffs I built and played. In the very early days EH, component values varied quite a lot so this layout is based on Kitraes schematic HERE. There is also some notes and info the component values.

Trannsistors is 2N5133 which is almost impossible to source nowadays. Some Big Muff owners have measured their transistors (out of circuit) and reported those varied quite a lot but most of them were in the 150-300 hfe range. 2N2222, 2N3904 or BC547B might be good candidates but a personal favorite is ME4003.

Here is two layouts, one standard and one "Triangle Style" mojo layout. Both are verified.

 

 

 

 

Electro Harmonix V1 Triangle Big Muff 66#11 1971 "Green Cap"

One of the more common of all the Triangle variants, easily identified by large green film caps which usually was 120nF or 100nF.

Compact layout

 

And a "mojo" layout in the vein of vintage units with 0,5w carbon composition resistors. The brave one could fit it in a 1250b enclosure.