Intellijel Atlantis Manuel utilisateur
Atlantis Manual
Atlantis
Dual Oscillator Subtractive Synth Voice
Manual Revision: 2018.09.13
Atlantis Manual
Table of Contents
Table of Contents
Compliance
Installation
Installing Your Module
Overview
Basic Features
Sound Generators
Filter
Modulators
Mixing and Output
Getting Started
Quick Start
Make a sound
Audition the waveforms and filter types
Modulate the filter
Add an envelope
Try a little FM
Use a sequencer (or CV keyboard)
Basic Architecture
VCO Overview
MIX Overview
VCF Overview
VCA Overview
ENVELOPE Overview
MOD Overview
Panel Reference
VCO
Controls
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Atlantis Manual
Inputs and Outputs
MOD
Controls
Inputs and Outputs
MIX
Controls
Inputs and Outputs
VCF
Controls
Inputs and Outputs
ENV
Controls
Inputs and Outputs
VCA
Controls
Inputs and Outputs
Tips, Terms & Techniques
Noise
Sample & Hold
FM
Sub Osc
Signal Flow
Technical Specifications
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Atlantis Manual
Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
Changes or modifications not expressly approved by Intellijel Designs, Inc. could
void the user’s authority to operate the equipment.
Any digital equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications.
This device meets the requirements of the following standards and directives:
EMC: 2014/30/EU
EN55032:2015 ; EN55103-2:2009 (EN55024) ; EN61000-3-2 ; EN61000-3-3
Low Voltage: 2014/35/EU
EN 60065:2002+A1:2006+A11:2008+A2:2010+A12:2011
RoHS2: 2011/65/EU
WEEE: 2012/19/EU
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Atlantis Manual
Installation
Intellijel Eurorack modules are designed to be used with a Eurorack-compatible case and power
supply. We recommend you use Intellijel cases and power supplies.
Before installing a new module in your case, you must ensure your power supply has a free
power header and sufficient available capacity to power the module:
● Sum up the specified +12V current draw for all modules, including the new one. Do the
same for the -12 V and +5V current draw. The current draw will be specified in the
manufacturer's technical specifications for each module.
● Compare each of the sums to specifications for your case’s power supply.
● Only proceed with installation if none of the values exceeds the power supply’s
specifications. Otherwise you must remove modules to free up capacity or upgrade your
power supply.
You will also need to ensure your case has enough free space (hp) to fit the new module. To
prevent screws or other debris from falling into the case and shorting any electrical contacts, not
leave gaps between adjacent modules, and cover all unused areas with blank panels. Similarly,
do not use open frames or any other enclosure that exposes the backside of any module or the
power distribution board.
You can use a tool like ModularGrid to assist in your planning. Failure to adequately power your
modules may result in damage to your modules or power supply. If you are unsure, please
contact us before proceeding.
Installing Your Module
When installing or removing a module from your case
always turn off the power to the case and disconnect the
power cable. Failure to do so may result in serious injury
or equipment damage.
Ensure the 10-pin connector on the power cable is
connected correctly to the module before proceeding.
The red stripe on the cable must line up with the -12V
pins on the module’s power connector. The pins are
indicated with the label -12V, a white stripe next to the
connector, the words “red stripe”, or some combination of
those indicators.
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Atlantis Manual
Most modules will come with the cable already connected but it is good to double check the
orientation. Be aware that some modules may have headers that serve other purposes so
ensure the cable is connected to the right one.
The other end of the cable, with a 16-pin
connector, connects to the power bus board of
your Eurorack case. Ensure the red stripe on
the cable lines up with the -12V pins on the
bus board. On Intellijel power supplies the
pins are labelled with the label “-12V” and a
thick white stripe:
If you are using another manufacturer’s power
supply, check their documentation for
instructions.
Once connected, the cabling between the module and power supply should resemble the
picture below:
Before reconnecting power
and turning on your modular
system, double check that the
ribbon cable is fully seated on
both ends and that all the pins
are correctly aligned. If the
pins are misaligned in any
direction or the ribbon is
backwards you can cause
damage to your module,
power supply, or other
modules.
After you have confirmed all
the connections, you can
reconnect the power cable and turn on your modular system. You should immediately check that
all your modules have powered on and are functioning correctly. If you notice any anomalies,
turn your system off right away and check your cabling again for mistakes.
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Atlantis Manual
Overview
Atlantis is a complete analog, monophonic synthesizer voice in a single, skiff-friendly
eurorack module. It contains a carefully matched selection of the most desirable subtractive
synthesis components including: two analog oscillators (VCOs); a sub oscillator; a noise
generator; a multimode, self-oscillating resonant filter (VCF) capable of both 2-pole and
4-pole operation; a 4-stage ADSR envelope; a mixer; a voltage controlled amplifier; and an
overdrive circuit.
These components are all pre-connected behind the front panel, enabling Atlantis to
generate sound without patch cables. Furthermore, these normalized routings can be
changed instantly using any of the numerous routing switches sprinkled across the Atlantis’
front panel. This allows for all manner of useful techniques, such as pulse width modulation,
oscillator sync, linear and exponential frequency modulation (FM), low frequency (LFO)
capabilities, and even sample & hold. Musicians can thus create a tremendously wide sonic
palette without ever connecting a patch cable.
For those seeking maximum sonic control, patch points are provided to all these
components — meaning you can reconfigure Atlantis’ architecture in any way you please —
including the ability to route voltages to or from any other eurorack modules in your system.
In this regard, Atlantis becomes not just a single synth voice, but a collection of independent
modules. Need to filter the sound coming from that Intellijel Shapeshifter? Patch it into
Atlantis’ filter. Want some weirdly slewed pitch wobble injected into one of the oscillators?
Patch in an Intellijel Noise Tools.
So what is Atlantis? It’s all of the following:
● A fully featured, fixed-architecture synth that you can happily use without patch cables,
just like many traditional synthesizers.
● A semi-modular synth that enables you to override the various normalled connections,
and reroute the signal flow for experimental sound design.
● An extensible synth that allows you to enhance its sonic palette by patching in external
modules to further shape and define your sound.
● A collection of individual, high-quality synth modules — ready to combine with any and
all other modules in your eurorack system.
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Atlantis Manual
Basic Features
The following is a quick breakdown of Atlantis’ various synthesizer components, patching
and routing options:
Sound Generators
● VCO (primary): triangle core with Hard Sync, Octave switch, Linear/Exp FM and PWM.
● MOD (second VCO): triangle core with a Hard Sync option, and a Link switch to couple
its pitch to the Primary VCO.
● SUB OSC: additional oscillator with either a square or pulse wave output pitched either
1 or 2 octaves below the primary oscillator.
● NOISE: Noise source with with either Pink and White output.
Filter
● Cascaded 4-Pole multimode (Lowpass; Highpass; Bandpass) OTA filter, switchable
between 2-pole and 4-pole.
● Special LP boost mode.
● Built in soft clipping.
● Allows for inverting ADSR mod source.
Modulators
● ADSR envelope with manual gate, and external level (velocity) control.
● Envelope has looping option, re-trigger, and selectable time range.
● Global modulation bus with four VCO waveforms, noise and S&H options.
Mixing and Output
● 27 jacks for creative and complex patching options — patch points for every synthesis
section.
● Mixer section includes an external source, which is normalled to a sinewave.
● Three position output clipping circuit.
● Output VCA has two stage clipping circuit.
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Atlantis Manual
Getting Started
If your previous experiences with learning to use synthesizers involved stepping through
presets, then you’re in for a shock — and a treat! Atlantis has no presets. Like modules and
synths of yore, the parameters on Atlantis are meant to be tweaked, twiddled and performed
in real time. The sound it generates correlates directly with the settings on its front panel —
there is no such thing as patch memory. What you see is what you hear.
While this makes Atlantis infinitely rewarding to sound designers and synthesists, it can be
slightly daunting to new users, since at least a modicum of basic knowledge is required to
coerce it into making the sounds you hear in your head.
In this Getting Started section, you’ll jump right into making sound, while simultaneously
getting comfortable with Atlantis’ front panel and layout. From there you’ll learn a bit about
Atlantis’ architecture and some fundamentals of subtractive analog synthesis before delving
into the Reference section, where you’ll find a more detailed discussion of Atlantis’ many
features and capabilities.
Quick Start
Make a sound
1. Connect the jack labelled OUT to your system’s audio output.
2. Set all sliders to their minimum (bottom) positions.
3. In the MIX section, set the leftmost slider (PULSE) to its maximum.
4. In the VCO section, make sure SYNC is off (switch position at the bottom).
5. In the VCF section, set the FREQ slider to its maximum.
6. In the VCA section, set the ENV/GATE switch to the “GATE” position.
7. Push the GATE button (small red button beneath the ENV/GATE switch). You should
hear a sound that sustains for as long as you hold the button.
8. In the VCO section, rotate the OCTAVE and FINE knobs to tune the oscillator as you
like.
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Atlantis Manual
Audition the waveforms and filter types
1. In the MIX section, raise and lower all the sliders and make note of how the sound
changes as different waveforms are mixed together in varying amounts.
2. In the VCF section, set the top switch to “LP,” the POLES switch to “2,” and turn on LP
BOOST. Raise and lower the FREQ slider, and notice how the filter is removing high
frequency content.
3. In the VCF section, set the RES slider to its midpoint, then raise and lower the FREQ
slider. Notice how the filter’s cutoff frequency is now more pronounced.
4. While still in the VCF section, experiment with different settings of the LP/BP/HP switch
and the 2-POLE/4-POLE switch. Notice how these change what frequencies are being
filtered and how “steep” the filter sounds.
Modulate the filter
1. In the MIX section, set the leftmost slider (PULSE) to its maximum, and set all the other
MIX section sliders to their minimum.
2. In the VCF section, set the filter type to “LP,” the POLES switch to “4” and set all the
sliders to the bottom, except FREQ, which you should set at the midpoint.
3. In the MOD section, set the VCO/LFO switch to “LFO;” set the RATE fader to the
midway point, and use the TYPE knob to select a triangle wave.
4. Back in the VCF section, raise the MOD slider to its midpoint. Notice that the filter’s
cutoff frequency is now being modulated by the MOD oscillator.
5. Back in the MOD section, raise and lower the RATE slider to change the rate at which
the LFO modulates the filter’s cutoff frequency. When finished, go to the VCF section
and reduce the MOD slider back to minimum.
Add an envelope
1. In the ENVELOPE section, set the CYCLE switch to its OFF position, and the x1/x10
switch to the “x1” position. Set the A (attack) and S (sustain) sliders to the bottom, and
the D (decay) and R (rate) sliders to the top.
2. In the VCA section, set the ENV/GATE switch to “ENV.”
3. Push the red button beneath the ENV/GATE switch and notice how the sound no longer
sustains indefinitely, but decays over time.
4. In the VCF section, set the filter type to “LP,” the POLES switch to “2” and set all the
sliders to the bottom, except FREQ, which should be about one-third of the way up.
Page 9
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