Aion Electronics RIFT Manuel

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Rift

Based on the Univox Superfuzz

Overview

Controls & Usage

The controls for the Superfuzz are pretty standard:

• Expander controls the fuzz level of the effect. (This acts as a volume control after a fixed-level input

boost stage, very similar to the Sustain knob on a

• Volume controls the overall output level.

• Tone allows you to switch between two fixed tone sections, one with a mid-scoop and another with a

flatter and less aggressive sound. This can be wired as a pot instead of a switch, allowing you to fade

between the two settings.

• Clip allows you to select a different set of diodes or lift the diodes altogether.

Modifications & Experimentation

If you want to use a tone pot instead of the switch, you'll find it convenient that the pot fits in the exact same

pads and you just need to drill the enclosure differently. This allows for blending between the two fixed tone

settings, which makes it a much more flexible control.

The clipping switch lets you choose from two sets of diodes. The stock unit uses germanium, around 0.3V

forward voltage, but lots more sounds can be had by using different diodes with a higher clipping threshold, or

by removing the diodes entirely in the center position. For the second set of diodes, I recommend using two

1N914s in series, but you should socket them and experiment.

Expect to make significant volume adjustments when switching between the different clipping diode options.

This circuit uses hard clipping by way of anti-parallel diodes going to ground. As a result, the volume level is

directly affected by the total clipping threshold (forward voltage) of the diodes being used.

RIFT (BASED ON THE UNIVOX SUPERFUZZ)

The Rift is a modified version of the Univox Superfuzz, a

classic octave fuzz. It was originally developed by the Shin-

Ei company in Japan and called the FY-6, but they also

rebadged the circuit for over a dozen other brands such as

Apollo, Electra and Hohner. However, the Univox Superfuzz

was the most well-known of the brands and is considered

the definitive version of the circuit.

The Rift includes two modifications that lend more flexibility

to this circuit. While the original unit only had a tone switch

to go between two presets, here you have the option of

using a pot instead to blend between them. There is also a

clipping switch to allow you to choose between two different

sets of diodes, or lift them altogether for a different (and

much louder) sound.

Big

Muff.)

Rift Project Link