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PROJECT NAME
RIFT
BASED ON
Univox Superfuzz
EFFECT TYPE
Octave Fuzz
PROJECT SUMMARY
A classic untamed fuzz from the 1970s that adds an octave-up overtone, famous for its use by Pete
Townshend of The Who.
Actual size is 2.3" x 1.86" (main board) and 2.3" x 0.86" (bypass board).
RIFT OCTAVE FUZZ
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2019-02-01)
1
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Summary of Contents for Aion Electronics RIFT
- Page 1 PROJECT SUMMARY A classic untamed fuzz from the 1970s that adds an octave-up overtone, famous for its use by Pete Townshend of The Who. Actual size is 2.3” x 1.86” (main board) and 2.3” x 0.86” (bypass board). RIFT OCTAVE FUZZ...
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Page 2: Table Of Contents
The new 125B version of the Rift is identical to the previous one, except that the diode clipping switch has been removed in favor of a simpler layout that is easier to build. The previous version of the Rift is still available if you want that option. -
Page 3: Parts List
Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W 100k Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W 100k Metal film resistor, 1/4W RIFT OCTAVE FUZZ... - Page 4 Optional modification - can use a potentiometer instead of a switch to blend between tone settings. TONE SPDT Toggle switch, SPDT on-on Omit if using tone pot. OCTAVE 10k trimmer Trimmer, 10%, 1/4” Adjust for strongest octave. RIFT OCTAVE FUZZ...
- Page 5 DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. BATT Battery snap 9V battery snap Optional. Use the soft plastic type—the hard-shell type will not fit. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. RIFT OCTAVE FUZZ...
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Page 6: Build Notes
50-60 gain range, but the 2N3903 is often under 100 and is a great choice for Q4-6. The Rift PCB layout uses the USA-standard E-B-C pinout (2N3904, 2N5088, etc.) for the transistors, but an extra pad has been provided on each transistor footprint to support the Japanese E-C-B convention. -
Page 7: Schematic
SCHEMATIC FY-6: 1N5817 R1 = 100k C2 = 1n 100uF 100n R9 = jumper R19 = 2k TONE Q4 Q5 2SC828 470R 2SC828 2SC828 2SC828 100n 10uF 10uF OCTAVE 100n RIFT OCTAVE FUZZ... -
Page 8: Drill Template
INCH 0.625” 0.625” ø3/8” ø3/8” ø1/2” BALANCE EXPANDER x: -0.65, y: +1.71 x: 0.65, y: +1.71 ø9/32” ø9/32” TONE x: 0, y: +0.66 ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.20 x: 0, y: -1.20 ø5/16” ø15/32” RIFT OCTAVE FUZZ... -
Page 9: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B RIFT OCTAVE FUZZ... -
Page 10: Wiring Diagram
GND +V +V JACK GND JACK GND GND PCB 125B Shown with optional 9V battery. If battery is omitted, both jacks can be mono rather than one being stereo. Leave the far-right lug of the DC jack unconnected. RIFT OCTAVE FUZZ... -
Page 11: Document Revisions
(In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!) DOCUMENT REVISIONS 1.0.0 (2019-02-01) Initial release. RIFT OCTAVE FUZZ...
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