Intellijel — Atlantix
Atlantix Manual (PDF)
Atlantix Eurorack Synth Voice Cheat Sheet
Overview
- Standalone analog dual-VCO synth voice (VCO A + B)
- Extensive normalization and modulation routing, full patch override
- Mixer with noise/sub/aux routing, multi-mode filter (VCF/Phaser), ADSR + linear VCA, S&H/T&H, Expander
- All signals and modulations available via jacks.
Quick Reference Guide
1. VCO A (Oscillator 1)
| Control |
Function/Range |
| [1.1] OCTAVE A |
8-position coarse tune (octaves) |
| [1.2] PITCH A |
Fine tune (~±1 semitone), tracks PITCH A IN (1V/Oct) |
| [1.3] IM slider |
FM index mod source amount (default: Envelope) |
| [1.4] INDEX |
Base FM1 amount (depth) |
| [1.5] FM2 |
FM2 depth (Exponential FM, default: Envelope) |
| [1.6] PWM |
Pulse width mod amount, default: VCO B sine or Envelope |
| [1.7] PWM SRC |
PWM modulation source select |
| [1.8] PW |
Pulse width setting (50%–~95%, full mod to 100% = silence) |
| [1.9] PULSE POS |
Center/Edge pulse position switch |
| [1.10] TZFM/EXP |
Linear Thru-Zero FM or Exponential FM |
| [1.11] AC/DC |
DC = deeper, AC = accurate (only for linear FM) |
| [1.12] SYNC TYPE |
Hard / None / Soft sync selection |
| [1.13] SYNC SRC |
VCO B Saw or GATE default for sync src |
VCO A Jacks
| Jack |
Function |
Range |
| [1.A] PITCH A IN |
1V/Oct pitch CV input |
0–+5V typical |
| [1.B] SYNC A IN |
Sync input (Ext overrides norm) |
Logic/Audio signal |
| [1.C] IM IN |
FM index mod CV (FM1 depth) |
±5V |
| [1.D] FM1 IN |
Linear/Exp FM input |
±5V |
| [1.E] FM2 IN |
Exponential FM input |
±5V |
| [1.F] PWM IN |
Pulse width modulation |
±5V |
| [1.G] SINE OUT |
Sine output |
10Vpp |
2. VCO B (Oscillator 2 / LFO)
| Control |
Function/Range |
| [2.1] OCTAVE B |
8-position coarse tune |
| [2.2] PITCH B |
Fine tune, tracks PITCH B IN (1V/Oct) |
| [2.3] PITCH SRC |
Pitch A + B or B only |
| [2.4] VCO/LFO |
Switch: audio rate or LFO (50s cycle) |
| [2.5] Indicator |
Bi-color LED shows polarity/rate |
VCO B Jacks
| Jack |
Function |
Range |
| [2.A] PITCH B IN |
1V/Oct pitch CV input |
0–+5V typical |
| [2.B] FM B IN |
Exponential FM input |
±5V |
| [2.C] SYNC B IN |
Hard sync input |
Logic/Audio |
| [2.D] SPIKE OUT |
Spike waveform out |
10Vpp |
3. MIXER
Mixes: VCO A Pulse/Saw, Sub, Noise, AUX1 (Tri/Square), AUX2 (Sine/Saw, route to MIXER or VCA)
Sub, Noise, and AUX waveforms selectable by switches
| Control |
Function |
| [3.1] PULSE |
VCO A pulse level |
| [3.2] SAW |
VCO A saw level |
| [3.3] SUB |
SUB level, type: -1/-2/OR |
| [3.4] NOISE |
Noise level, type: WHITE/PINK |
| [3.5] AUX1 |
AUX1 level, source: VCO A TRI/B SQUARE |
| [3.6] AUX2 |
AUX2 level, source: VCO A SINE/B SAW, routing |
| [3.7] AUX2 ROUTE |
Route AUX2 pre/post filter (MIXER/VCA) |
| [3.8-3.11] Switches |
Set Noise/Sub/AUX1/AUX2 source types |
MIXER Jacks
| Jack |
Function |
Range |
| [3.A] AUX1 IN |
External input to mixer |
±5V |
| [3.B] AUX2 IN |
External input (pre/post VCA) |
±5V |
| [3.C] MIXER OUT |
Mixed output (default to VCF in) |
10Vpp |
4. VCF / Phaser
| Control |
Function/Range |
| [4.1] FM1 |
FM1 depth (default: MOD Y) |
| [4.2] FM2 |
FM2 depth (default: VCO A pitch), polarity switchable |
| [4.3] ENV |
Envelope FM depth, polarity switchable |
| [4.4] FREQ |
Cutoff freq |
| [4.5] Q |
Resonance (CV offset at Q IN) |
| [4.6] Mode |
LP/BP/HP (High = always 4-pole), PHZ/Filter toggle |
| [4.7] 4P/2P |
2/4 pole (LP/BP mode only) |
| [4.8] PHZ/Filter |
Phaser/Filter switch |
| [4.9] FM2 Polarity |
Invert FM2 CV |
| [4.10] ENV Polarity |
Invert envelope CV |
VCF Jacks
| Jack |
Function |
Range |
| [4.A] FM1 IN |
Filter CV 1 (attenuated) |
±5V |
| [4.B] FM2 IN |
Filter CV 2 (attenuated) |
±5V |
| [4.C] VCF IN |
Main audio in (defaults to mixer) |
10Vpp |
| [4.D] Q IN |
Resonance CV |
±5V |
| [4.E] VCF OUT |
Main filter audio out |
10Vpp |
5. ENVELOPE / VCA
Classic ADSR, routed to VCA, FM, PWM, filter
| Control | Function/Range |
|---------------------------|-------------------------------------------------|
| [5.1] A | Attack time (time varies by RATE switch) |
| [5.2] D | Decay time |
| [5.3] S | Sustain level (0–5V) |
| [5.4] R | Release time |
| [5.5] RATE | Envelope speed: FAST/MED/SLOW |
| [5.6] ENV/GATE | VCA controlled by ENV or GATE |
| [5.7] DRIVE | VCA drive: Sym/None/Asym |
| [5.8] MAN GATE | Manual gate trigger (momentary button) |
Envelope/VCA Jacks
| Jack |
Function |
Range |
| [5.A] GATE IN |
Gate trigger input |
Gate/Trigger |
| [5.B] RETRIG |
Retrigger (while gating) |
Trigger |
| [5.C] LEVEL |
Envelope output VCA (defaults 5V) |
0–5V CV |
| [5.D] ENV OUT |
Envelope out |
0–5V |
| [5.E] INV ENV OUT |
Inverted envelope |
0–-5V |
| [5.F] VCA IN |
VCA signal in (defaults to VCF O) |
10Vpp |
| [5.G] OUT |
Main audio output |
10Vpp |
6. MODS (X, Y, S&H, Noise)
| Control |
Description |
| [6.1/6.5] MOD X/Y SRC |
8-way selector: VCO B (Sine, Tri, Saw, Sq), S&H, Noise, VCF, (X: VCA; Y: Mixer) |
| [6.2/6.6] UNIPOLAR |
UP: unipolar (0–5V); DOWN: bipolar (-5–+5V) |
| [6.4/6.8] POLARITY |
UP: normal, DOWN: inverted |
| [6.9] HOLD SRC |
S&H hold: VCO B Sq or Gate |
| [6.10] S&H/T&H |
S&H (sample-hold rising edge), T&H (track-hold low) |
MOD Jacks
| Jack |
Function |
Range |
| [6.A] S&H HOLD |
S&H sample trigger/gate |
Gate/Clk |
| [6.B] S&H SAMP |
S&H input (default: WhiteNoise) |
±5V |
| [6.C] S&H OUT |
S&H output |
-5V to +5V |
| [6.D] NOISE OUT |
Dedicated noise out |
±5V |
| [6.E] MOD X OUT |
X source out (audio or CV) |
±5V |
| [6.F] MOD Y OUT |
Y source out (audio or CV) |
±5V |
7. ATLX Expander Jacks
- [X.A] LP OUT: Lowpass out | [X.B] HP OUT: Highpass out
- [X.C] BP OUT: Bandpass out | [X.D] PHZ OUT: Phaser out
- [X.E] SUB OUT: Sub osc out | [X.F] RING OUT: Ring mod out
- [X.G/H] X/Y IN: Ring mod inputs (default: A/B Sine)
- [X.I-X.L] A outputs: Sine, Tri, Saw, Pulse
- [X.M-X.P] B outputs: Sine, Tri, Saw, Square
Voltage Ranges
- CV Inputs: Most use ±5V, envelopes/sources generally 0–5V, outputs 10Vpp audio
- Gate/Trigger: Standard 5V logic
- Keep CV within ±12V for safety when patching external gear.
Key Internal Normalizations
- Patch points override normaled routing.
- Envelope, MOD X/Y, and default oscillator and modulator connections pre-wired.
- Mixer output normalled to filter, filter output normalled to VCA, VCA to OUT.
Tips
- Use VCO B as audio or LFO in mod matrix; Exponential/Linear FM available
- Drive switch on VCA for saturation/color
- AUX2 can be routed post-filter (VCA) for parallel processing
- MODS: Noise, S&H, VCO/VCF/MIX sources as mod or audio
- Expander gives direct outs for advanced patching (filter breakouts, ring mod, etc)
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