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.

Pettyjohn Rail

 Schematic avaiable at PedalPCB.

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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.

 

 

 

 

 

 

 

Suhr Rufus Fuzz

 Schematic avaiable at PedalPCB.

Did one tiny mod; replaced the drain resistor of Q4 (20k) with a trimpot for easier biasing.

 

Maestro OB-1 Octave Box

 Another old octave down circuit with a forest of transistors.... It also have a rare part, MFC-4040 which were a 4.pin divider/flip-flop IC. It went obsoltete in 1975 but according to several sources, NTE754 is a direct replacement. R12 and C21 is marked as "factory tailored component" in the factory schematic so these needs to be socketed and tested. And yes, there is a 1,4uF cap under Q4 but a 1,5uF will do.

Shin-ei Companion WT-1 Wah Wah

 Here is one for the Psychocandy fans. Just put this after your superfuzz clone (or to be more accurate, your "6TR" superfuzz clone) and go to town. The stock transformer part number is unknown but a 42TM013 will do with its 500mH inductance. Both 50k and 100k wah pots were used and input cap were iether 50nF or 10uF.

Schematic avaiable at Tonehome.

Shin-ei OB-28 Octave Box

 Here is an old odd cat. This is an all discrete clean monophonic octave down effect made by Shin Ei back in the early 70s. Initially I though this was a Maestro OB-1 clone but the schematics revealed that's not the case. 

See the notes below the layout for components that needs matching for best result. And I must admit the switching is a bit confusing but I think I got it right. Also worth mentiong is that reducing the horizontal cap right to Q11 will give a more aggressive and louder octave down signal.

It was sold under several brand names like Pax, Rands and Sekova. Colorsound also made their own version called Octivider but it had a quite few value changes so that one deserves an own post.

*Update 240120* Verified by JRuss with a small correction. Pinout of Q77 altered to match the schematic. 

 

 

 

Death by Audio Super Fuzz War - Boost section

Based on schematic avaiable at Deadend Fx.

Layout for the Fuzz section HERE. 

WTF Dist 250

 Pedro (WTFiCanBuildMyOwnPedals) came up with this distortion/overdrive a while ago. It takes elements from both DOD250 and Boss DS1 but it has its own thing going on. A bit less gain than a DS1 and cap values in the signal path is adjusted. The hard clipping diodes are a LED and a silicon diode for assymetric clipping

This one is verified by Pedro.

Ibanez No. 95 Renometer

 This was a request. Appearantly a very powerful booster and eq circuit using inductors for sort of multiband wah sounds. The original ran on two 9v batteries for bipolar power operation but I included an onboard power inverter. Note that sizes of inductors varies a lot but hopefully there is enough room for them, especially the larger ones.

Schematic by Dirk Hendrik HERE.

 

 

And a layout with more accessible 100mH inductors.

 

 

Analog Man King of Tone

 This one is basically two OD circuits in one enclosure so I went with two separate board for the option to only have one in a smaller enclosure. The only differencies between the two channels is the value of the gain limiting resistor at the gain control, the hard clipping diodes and possibly the op amp (the one in the high gain channel was sanded off...).

The layout is based on a schematic avaiable at FSB.

 

Regular channel

 

 

High gain channel

 

 

 

PedalPCB Range Finder

 Just because rotary switches are cool...😎

Schematic avaiable at PedalPCB.