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NEUTRON
NEUTRON Getting started
Step 3: Getting started
(EN)
OVERVIEW
OSCILLATOR SECTION
This 'getting started' guide will
Each oscillator has a tune control
help you set up the Neutron analog
which gives approximately +/-1
synthesizer and briefl y introduce
octave range in 8/16/32 modes or a
its capabilities.
range from 0.7 Hz to over 50 kHz when
all range LEDs are illuminated.
CONNECTION
The OSC MIX control is used to blend
To connect the Neutron to your
between the two oscillators to create
system, please consult the hook-up
rich harmonic sounds.
guide on page 10.
Adjust the SHAPE control
for each oscillator to select
SOFTWARE SETUP
diff erent waveforms.
The Neutron is a USB Class Compliant
The P.WIDTH aff ects the fi rst two wave
MIDI device, and so no driver
shapes, TONE MOD and SQUARE WAVE.
installation is required.
When OSC SYNC is engaged, oscillator
HARDWARE SETUP
1 tracks the midi note and provides
a reference to reset the period of
Make all the connections in your
oscillator 2.
system. Use the rear panel MIDI
switches to set the Neutron to a
When the PARAPHONIC switch is
unique MIDI channel in your system.
engaged, it allows the two oscillators
Connect an external MIDI keyboard
to be independently pitched when
directly to the Neutron MIDI IN 5 pin
more than one MIDI note is played
DIN type input or MIDI over USB.
simultaneously. If only one note is
Apply power to the Neutron using
played, both oscillators will be driven
the supplied power adapter only.
at the same pitch.
Ensure your sound system is turned
The NOISE control injects white noise
down. Turn on the Neutron rear panel
into the fi lter which can be used to
power switch.
add another texture to the sound.
Noise can be used to create percussive
sounds and interesting eff ects.
VCA Bias is used to control the VCA.
It allows the user to 'open' the VCA
without triggering the envelope (e.g.
with a MIDI note), allowing audio to
sound continuously.
FILTER SECTION
The Neutron has 12 dB fi lter with
three modes available: High Pass
Filter
, Band Pass Filter
and Low
Pass Filter
with Resonance control.
The mode button steps through each
fi lter mode.
The FREQ control sets the fi lter cutoff
frequency. By default, the LFO is
patched through the FILTER DEPTH
control. This enables modulation of
the fi lter frequency using the LFO.
The VCF has a second output which is
accessible from the patch bay (VCF 2).
VCF 2 mode is determined by the
selected VCF mode.
The relationship is:
Mode =
, VCF2 =
Mode =
, VCF2 =
Mode =
, VCF2 =
This allows for additional fi lter
modes. For example, a notch fi lter
can be created by summing VCF1
and VCF2 when the fi lter mode is
set to
by summing VCF 1 and
VCF 2 then patching the summed
output into OD IN.
KEY TRACK applies keyboard tracking
to the VCF. This sets the fi lter cutoff
frequency based on the latest midi
note received. The base cutoff
frequency is set using the FREQ
control with midi notes increasing
the cutoff frequency relative to the
note being played. Additionally, this
allows the fi lter to be played like an
oscillator when the resonance control
is turned up.
LFO SECTION
ENVELOPE SECTION
The Neutron LFO has a frequency
The Neutron contains two ADSR
range of 0.01Hz to 10kHz. This allows
(Attack, Decay, Sustain, Release)
low frequency modulation up to audio
envelopes. Both envelopes are
rate modulation using the LFO.
triggered when a midi note is
received, unless the E.GATE 1/2 inputs
The Shape control sets the type of LFO
are used.
waveform. When selecting the LFO
waveform the control can be set to
ENVELOPE 1 is routed to the VCA CV by
select between fi xed types or to blend
default. This allows the signal to pass
between wave shapes.
through the unit when a midi note is
being played and closes the VCA when
With KEY SYNC engaged, the LFO
no note is being played.
is re-triggered when a midi note
is received.
ENVELOPE 2 is routed to the VCF,
via the ENV DEPTH control, by
DELAY SECTION
default. This can be used to create
fi lter sweeps when a midi note is
The Neutron has an impressive analog
being played.
bucket brigade delay. Delay times of
24ms to 640ms can be set. Chorus
SAMPLE AND HOLD
eff ects can be created by modulating
short delay times with an LFO applied
The sample and hold function
to the DELAY TIME input.
generates a random, stepped
waveform by taking a sample of
OVERDRIVE SECTION
the input signal. The sample rate is
governed by the RATE control or the
The overdrive section can be used
SH CLOCK input.
to add subtle warmth to extreme
The GLIDE control limits the rate of
distortion. Turning the drive control
change between samples allowing
to the right increases the amount of
smooth transitions between
distortion added. The Tone control
sample values.
shapes the sound of the overdrive.
As the DRIVE level is increased, the
PORTAMENTO and SLEW
LEVEL control can be utilised to turn
down the volume of the synthesizer
PORTA TIME is the amount of time
without aff ecting the drive or tone of
taken to transition between two
the sound.
midi notes. This feature can be used
to add a pleasing musical slide into
your sounds.
The SLEW Limiter is used to limit
the rate of change of a signal. For
example, Slew can be used to add
portamento to pitch CV's generated
from an external sequencer.
Quick Start Guide
31
ATTENUATORS
ATTENUATOR 1 is an additional
VCA which can be used to reduce
the amplitude of the input signal
based on the Att1 CV control or the
attenuator 1 front panel control (43).
The output of attenuator 2 is routed
to the attenuator 1 input by default.
The assignable output is routed to the
attenuator 1 CV by default.
ATTENUATOR 2 - Reduces the
amplitude of a signal based on the
attenuator 2 control (44).
The BIPOLAR LFO output is routed to
the attenuator 2 input by default.
The attenuator 2 output is also routed
to P.WIDTH 1 and P.WIDTH controls
by default.
EURORACK
The Neutron synthesizer can be
taken out of its factory chassis and
fi tted into a standard Eurorack case
(not supplied). Please see the details
shown in the manual.
UPDATING NEUTRON SOFTWARE
The Neutron DFU (Device Firmware
Upgrade) updater can be downloaded
by going to musictri.be. Please follow
the steps documented in the release
notes accompanying the update.
Need help?
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