Aion Electronics Phobos Germanium Fuzz Manual Download Page 1

PHOBOS GERMANIUM FUZZ

1

PROJECT NAME

PHOBOS

BASED ON

EFFECT TYPE

PROJECT SUMMARY

DOCUMENT VERSION

Tone Bender Mk. III (3-knob)

A reproduction of the third version of the Tone Bender germanium fuzz sold by Macaris in London in the 
late 1960s.

Germanium fuzz

1.0.0 (2020-07-03)

BUILD DIFFICULTY

Easy

Actual size is 2.3” x 1.86” (main board) and 2.3” x 0.86” (bypass board).

Summary of Contents for Phobos Germanium Fuzz

Page 1: ...RY DOCUMENT VERSION Tone Bender Mk III 3 knob A reproduction of the third version of the Tone Bender germanium fuzz sold by Macaris in London in the late 1960s Germanium fuzz 1 0 0 2020 07 03 BUILD DI...

Page 2: ...and was a contemporary clone The Elka Dizzytone and the Prescription Electronics Yard Box were two others Aside from the Buzzaround all of the rest of these variations can be build on this PCB A note...

Page 3: ...R9 10k Metal film resistor 1 4W R10 220k Metal film resistor 1 4W RPD 1M Metal film resistor 1 4W Input pulldown resistor Can be as low as 1M LEDR 4k7 Metal film resistor 1 4W LED current limiting re...

Page 4: ...C1 S DIP 8 socket IC socket DIP 8 Q1 2B 10k trimmer Trimmer 10 1 4 Bias trimmer for Q1 and Q2 See build notes Q3B 10k trimmer Trimmer 10 1 4 Bias trimmer for Q3 See build notes FUZZ 100kB 16mm right a...

Page 5: ...ne since this stage just boosts the signal a bit This can also significantly reduce the noise since silicon is much quieter than germanium Biasing The Phobos Fuzz project is set up to allow for easy b...

Page 6: ...ed to keep the Fuzz control in place If it s turned all the way up the unit is stock but this way you still have the option to turn it down Prescription Electronics Yard Box C4 4 7uF Fuzz 250kB The Ya...

Page 7: ..._GND 47uF VA PWR_GND GND Ge 1k VA Ge 18k 1k 10k 2n2 GND GND 10kB 10kB 10k 470n 100n GND 220k 220pF VA 3k3 10uF GND GND Ge GND VA 100kB GND 100n GND 220k IN OUT RPD D1 C7 LEVEL 1 2 3 FUZZ 1 2 3 C11 R1...

Page 8: ...ssumes the use of closed frame jacks like the Switchcraft 111X If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the...

Page 9: ...PHOBOS GERMANIUM FUZZ 9 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Page 10: ...AM 125B IN V GND GND N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT Shown with optional 9V battery If battery is omitted both jacks can be mono rather than one being stereo Leave the far...

Page 11: ...as suggestions based on the experience and opinions of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is...

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