User Manual

ManualsBrandsIntellijel ManualsAudioRubicon

Intellijel RubiconManual Version1

Page|1



The Rubicon is an analogue triangle core VCO that is capable of through zero frequency modulation. It

is a feature packed VCO with multiple simultaneous waveform outputs including waves that are

multiples or divisions of the base frequency.

Front Panel details

1- COARSE knob- Sets the frequency of the oscillator.

2 - LFO/VCO switch - Changes the base frequency range from very slow (LFO) to audio (VCO)

3 - FINE knob – Allows finer adjustment of the coarse frequency over a range of +/-6 semitones

4- SINE TYPE switch - SINE on the left, SIGMOID in the middle, SIGMOID at double the base

frequency on the right (sine is what you get when you push a triangle wave to a sine shaper, and

sigmoid is what you get when you push a sawtooth wave through a sine shaper -- it sounds a lot like a

saw, but a bit warmer and can be great for creating metallic sounds.

5- SYMMETRY knob - Determines the direction and magnitude of the waveform through the linear FM

circuit -- fully CW gives output at the positive base frequency, fully CCW gives output at the negative

Summary of content (10 pages)

PAGE 1
Intellijel Rubicon Manual Version 1 The Rubicon is an analogue triangle core VCO that is capable of through zero frequency modulation. It is a feature packed VCO with multiple simultaneous waveform outputs including waves that are multiples or divisions of the base frequency. Front Panel details 1- COARSE knob- Sets the frequency of the oscillator.
PAGE 2
Intellijel Rubicon Manual Version 1 base frequency, and in the centre the VCO stops oscillating (zero frequency). If fully CW, then a signal into TZFM gives conventional Linear FM. Ditto for fully CCW, but the output frequencies are negative (which simply means that all of the waveforms are backwards -- except the zigzag, strangely enough). For normal VCO sounds set this at full CW. NOTE: Symmetry affects 1V/Oct tracking! For the best tracking put SYMMETRY in full CW position.
PAGE 3
Intellijel Rubicon Manual Version 1 IO Section Details INPUTS 1 - 1V/OCT - Controls the frequency of the VCO. 1 volt increments double the frequency of the VCO. 2 - INDEX - CV input of the VCA in the TZFM path. There is a mini attenuator on this input. 3 - TZFM - FM input that can be switched LINear or EXPonential with the switch above it. The amount of this input is controlled by the VCA. The VCA is controlled by the TZFM knob and INDEX input.
PAGE 4
Intellijel Rubicon Manual Version 1 D - Double Saw wave - A saw one octave above the VCO frequency E - Zig Zag wave F - Square wave G - Pulse wave - Pulse type selected by the PULSE TYPE switch. Wave types: pulse (center modulated), pulse (edge modulated), double frequency pulse H - SUB - Sends a square wave either one or two octaves below the base frequency to the SUB output. SUB OCT switch selects -1 octave or -2 octave below the VCO frequency.
PAGE 5
Intellijel Rubicon Manual Version 1 The TZFM Section in depth On the Rubicon panel, the "Index" input is the CV input for dynamic control of the TZFM CV input. This TZFM input goes through a linear VCA, and the Index input controls this VCA. (The Symmetry input does not go through a VCA, and therefore cannot be put under dynamic control -- that is the only difference between those two inputs.) Like the other modulation indices, it is 20% per volt.
PAGE 6
Intellijel Rubicon Manual Version 1 sync, etc. You can also self modulate to interesting effect. Try sending the SUB output to HARD or SOFT at various attenuator settings, or the double sigmoid to TZFM, or whatever -- it may be total shite, or it may be the most amazing thing you've ever heard. Experiment!” - David G.
PAGE 7
Intellijel Rubicon Manual Version 1 Patch Examples Patch 1: Basic 2 Operator TZFM This is the most basic FM patch and is known as “Two Operator FM”. It uses The Rubicon, another VCO, two Envelope Generators and a VCA. In FM terminology the Rubicon becomes the Carrier and the second VCO is the Modulator. Because they have similar pitch tracking we recommend the second VCO be a Intellijel Dixie or another Rubicon. You will need a 1V/oct and gate source such as a CV keyboard or MIDI to CV converter.
PAGE 8
Intellijel Rubicon Manual Version 1 Patch 2: Classic DCO style PWM Saw Strings One of the special features of the Rubicon is the double frequency waveform outputs. These waves can be used for FM modulation or combined with the other waves to give a richer sound. PWM saws can be created by using the Double Saw and Pulse outputs into a cross fader creates a saw wave that can be pulse modulated. By setting the cross fader to the center so that both waves are equal the below waveform is generated.
PAGE 9
Intellijel Rubicon Manual Version 1 Web: http://intellijel.com/ email: support@intellijel.com Technical Specifications Width: 18 HP Depth: 45mm Power: 95mA @ -12V, 107mA @ +12V Expected input: 5v peak to peak This modular device is intended to be used in the Eurorack standard modular system and its associated enclosures and power supply specifications.
PAGE 10
Intellijel Page | 10 Rubicon Manual Version 1