This manual assumes that you have some knowledge about subtractive synthesizers, so it does not go
into depth of certain concepts such as how Filter, LFO or ENV work in detail, although the unique
features are described here briefly. There are plenty of resources for information about the theory of
sound synthesis. For more information about Connections, Basic Operation, Global settings, Saving,
loading and renaming patches please refer to Quick Start guide.
SIGNAL FLOW
Xenophone’s signal path is 100% analog. This means that Oscillators, VCAs, Mixer, Filter and Distortion
are based on analog circuits and there is no D/A (digital to analog converter) in signal path. Except for
Digital FX which can be muted and leave the analog signal untouced. DFX stereo outputs are injected to
a pair of VCAs and then mixed with the master VCA output signal.
SYNTH ENGINE:
Xenophone is an analog subtractive synth while it follows a modern semi modular architecture. The
engine is customized in way to provide the important functions via hardwired connections and at the
same time giving you the option to route your own signals via Modulation Matrix. The synth engine
consists of 16 parts. Each part has several parameters which can specifically alter the sound shape,
pitch, timber and color. These parts are categorized in two groups: Audio and Mod.
Audio Group: Oscillator1, Oscilaltor2, Noise Generator/Oscillaotor3, Mixer, Filter, Main
Audio group includes parts that are basically the source of the sound or affect the sound shape or color
directly. The Audio group parameters are controlled by CVs “Control Voltages” that are generated by
Mod group. The Mod group parts do not generate any sound but produce control voltages to modulate
the Audio group parameters. Mod group can also modulate themselves via Modulation matrix. All these
16 parts are described one by one in the next pages of this manual.
Disconnects oscillator from the mixer, reduces background noise
StpSqr
Combined Square and Square (Stepped Square)
Xor1-2
Ring Modulation between oscillator 1 and 2 square wave
OSCILLATOR 1
Semitone: [-60…+60] sets oscillator base frequency over 10
octaves from C-1 to C9: 8Hz-8Khz (C4 is the middle C)
Cent: [-50…+50] fine tune the base frequency; 0 centered.
(50 cents = 1/2 semitone). (Soft Knob E3)
Keytrk: [on, off] enables/disables keyboard tracking for oscillator. For
regular playing it must be on. When [off], the oscillator frequency is
fixed and does not follow the played keys. (Soft Knob E4)
Waveform: see table:
Saw, Square and Triangle are the classic waveforms. Xenophone oscillators are purely analog and not
wavetable based but they can produce new waves out of the classic ones using waveshaper circuit.
These new waves are called combined waveforms:
SawSqr is build from Saw and Square in time domain (not Amplitude). Using Shape parameter you can
morph between these two waveforms like the following example:
Shape 0 Shape 50 Shape 100 Shape 150 Shape 200
Besides Shape value the pulse width setting can also change the Square wave independently which
results in creating of more complex and unpredictable waveforms with rich harmonics. Don’t forget to
tweak the shape and pw to find the sweet spots. You can modulate the shape and pw at the same time
too.
XOR ring modulator is a kind of analog ring modulator that only receives square wave as input,
the output is square wave and result of the input multiplication. It has been used in many vintage
synths like Arp, Korg and etc.
XOR function is internally hardwired, after selection it automatically gets a square wave from OSC 2 while other waveforms can be selected on OSC2 at the same time. Except the OSC 2 Pitch other
settings do not affect the Xor funtion like: waveform, Oscillator level, etc.
TriSqr has the same concept while it is built from a Triangle and Square wave:
Shape 0 Shape 50 Shape 100 Shape 150 Shape 200
StpSqr is a kind of square wave with double steps while the Pulse Width parameter only affects one
part. However, you can get a virtual PWM on the second part with modulating Shape:
Shape 0 Shape 50 Shape 100 Shape 150 Shape 200
Xor1-2: When it is selected, it replaces oscillator 1 output with “ring modulated” combination of
oscillators 1 and 2 square waves. Varying the frequency of oscillator 1 with respect to oscillator 2
produces a wide range of non-harmonic overtones useful for creating crunchy and gritty sounds.
PW: [0…200]determines the amount of Pulse Width for Square waveform.
Shape: [0…200] alters the wave shape for combined waveforms: SawSqr, TriSqr, StpSqr. (Soft Knob E4)
Phase: [0…127] sets the start phase for oscillator. It makes sense when at least two oscillators are used
in the patch (Soft Knob E4). See Phase Mode (page 4)
Subtype: [-1 Oct, -2 Oct, -4Ring, -8Ring, Off] each oscillator has a dedicated sub oscillator which can be
tuned 1 or 2 octave below the base frequency. Sub oscillator output is a square wave with 50% PW. The
sub output can be replaced by ring modulated combination of oscillator 1 and its sub which is tuned 2 or
4 octaves below the base. The ring modulator is XOR based and only accepts square wave, all signal
connections are hardwired internally like the following picture.
Portamento will occur only if you play a second key before lifting up the first key.
Always Fixed
Portamento always occurs regardless of the situation of the next keys.
Legato Scaled
Portamento will occur only if you play a second key before lifting up the first key.
Always Scaled
Portamento always occurs regardless of the situation of the next keys.
C64 type is a pitched noise which can be played by keyboard. it is like a lo-fi white noise while its
harmonics are emphasized by the base frequency of Oscillator 3. This type of noise is inspired from
the famous SID chip noise generator section that was found in old Commodore 64 game console.
When you modulate the pitch of the oscillator 3 it also affects the C64 noise pitch.
OSCILLATOR 3 / NOISE GENERATOR
Oscillator 3 waveform is limited to Square wave. Oscillator 3 output and Noise
generator share a single VCA, you can only use and select one of them. The noise
generator module can produce standard White, Pink, Red and C64 noise.
Semitone: [-60…+60] sets oscillator 3 and pitched noise base frequency over 10
octaves from C-1 to C9: 8Hz-8Khz (C4 is the middle C) (Soft Knob E2)
Noise Type: [white, Pink, Red, C=64, SQR] determines the noise type or replaces the output with
Oscillator 3 signal. (EDIT Button)
Keytrk: [on, off] enables/disables keyboard tracking for the oscillator 3. (Soft Knob E4)
VOICE
Porta:[0…127] determines the Portamento/Glide time. Porta LED=On shows that the portamento time
is more than zero.
The portamento time can be fixed or scaled. In Fixed mode Portamento time is fixed regardless of the
distance between two played keys. In Scaled mode it is variable and represents the amount of time it
takes to glide a distance of one octave. For example if the distance between the first and the second key
is two octaves, the portamento time will be double.
Porta Type: see table.
Bend Range: [0…24] Determines how many semitones the incoming pitch wheel data can bend the
pitch of the oscillators. If you set it to zero, the pitch wheel will have no direct effect on the pitch,
although it can still be used in the Mod Matrix as a source of the modulation.
Analog drift is an algorithm which emulates the analog circuit components tolerance, temperature
effect and power supply noise. These flaws caused instability and tuning issues in old analog
synthesizers that used voltage based pitch control system. On the other hand and in a magical way
these flaws have a significant role in warmth and fatness of the sound when more than one
oscillator is used in the patch.
Voic:Dtune FM* Drft
* 0 740 26
Detune: [0…50] sets the amount of detuning between the three oscillators. The detune function
increases oscillator 1 pitch and decreases oscillator 2 pitch from 1 cent to 50 while leaves the oscillator 3
pitch untouched.
FM: [0…1022] sets the amount of FM depth, Zero means
disable. (Coarse Soft Knob E1, Fine E3)
FM is located in Voice section Page2. [E3] soft knob changes
value ±1 step and [E1] changes it ±10 steps.
Oscillator 2 Triangle signal always modulates oscillator 1 frequency (you cannot change the modulator
waveform here it is hardwired internally). Varying the pitch of oscillator 2 regarding FM depth will result
in frequency modulation of oscillator 1. Except the pitch, other settings of oscillator 2 does not affect on
FM function. For the best result Square should be selected as waveform in oscillator 1.
Drift: [0…127] sets the amount of Analog Drift. (Soft Knob E4)
Although the Xenophone’s oscillators are analog but the main pitch is controlled by a microprocessor
(based on digital tuning word not voltage) which makes the synth always in tune. Analog drift detunes
and modulates oscillators in micro-cents range. If you want to hear the effect of analog drift you should
use more than one oscillator and set the [Phase Reset] parameter to Free-run.
Sync: [Off, On] enables/disables Hard Sync. It synchronizes fundamental frequency of oscillator 1 with
frequency of oscillator 2, producing a “hard sync” effect. In order for synchronization to occur oscillator
2 must be set to some frequency preferably lower than the frequency of oscillator 1.
Phase Reset: [On, Free-run] when “on” forces oscillators to start at specific phase (usually zero) every
time a new note is played. Each Oscillator has a dedicated phase parameter that represents the starting
point in waveform. If OSC1 Phase and OSC2 Phase have the same value, [Phase Reset = On] forces them
to be phase synced. In some sounds like percussive or bass it helps to increase punch and overall audio
level specifically when the waveforms and settings on both oscillators are the same. (Soft Knob E3)
In Free-run mode the oscillators are working freely and the Note-On message does not reset the phase.
In most of the analog synths, oscillators are working in Free-run mode. You can get the best result for
creating vintage synth sounds and fat brasses Using Free- run mode + Analog drift at the same time.
Clipping: Like other analog mixers, Xenophone mixer has the potential to clip the output If the summation of the
input signals exceeds a certain level (clipping level). For example if you set OSC1, OSC2, SUB1 and SUB2 levels all to
127 you should not expect clip-less signal at the output. A good starting point for input levels is 64. If you hear
clipping in a patch, the first thing you should do is decreasing the levels of oscillators, subs, ring, ext and noise.
Beside the mixer, increasing the Feedback level and high resonance on 24db filter can also clip the signal. The
solution is only reducing the source levels or resonance amount.
MIXER
The Xenophone mixer has seven inputs that are categorized in two
pages on the display:
Ring Level: [0…127] Determines analog ring modulator level. Ring modulator
gets the oscillator 1 and 2 audio signal as input and multiplies the levels and
polarity of these signals. Varying the pitch of oscillator 1 or 2 will generate
various non-harmonics overtones at ring modulator output while keeping
fundamental frequencies of the inputs. Ring modulator is useful for creating
metallic and bell type sounds.
EXT/Feedback:[0…127] Determines “External Audio Level” or “Feedback Amount”. You can use only
one function regarding the connection of external TRS jack.
For processing external audio with filter and DFX you can inject an external audio signal into the
Xenophone input located at the back panel. Note that for hearing the audio the Amp Envelope must be
open this means that you must play a note or set the [Amp Env Release] to maximum value (Hold). A
pre-configured patch for this purpose is located in factory Bank0-Program122: MSC-Ext Audio 1.
When external jack is disconnected, Xenophone uses its path for injecting post-filter signal into the
mixer regarding the feedback level. Increasing feedback adds warmth and overdrive to the sound
besides it decreases resonance amount, when filter is set to LP or serial modes. For HP, BP and notch it
increases resonance.
Warning: Using feedback with level higher than 50 may cause self-oscillating with massive level at the
output, in order not to harm your ears and speakers use this parameter with care.
ENV Depth: [-50.0…+50.0] sets how much the filter envelope
modulates filter frequency.
Freq: [0…4095] sets the filter cut off frequency.
Res: [0…100] sets the filter resonance level. The 24dB and serial
filters self-oscillate at high resonance level. See table:
The table is valid only when the Feedback level is zero, non-zero feedback
level alters the resonance amount.
Keytrk: [-100…+100] sets how much the filter frequency tracks
the keyboard. For example, it makes filter frequency higher as
you play higher notes on the keyboard or lower as you play
lower notes. The keyboard tracking signal is the summation of
MIDI note number, portamento and pitchbend signal. A setting
of [0] means the keytracking have no effect on the filter
frequency. A setting of [+100] means the filter cutoff will follow
the keyboard pitch at a 1:1 ratio centered around C4 (MIDI note
60). (Soft Knob E4)
Type: Sets the filter type. see table:
Slope: [-12dB, -18dB, -24dB] sets filter slope. see table above.
FM(OSC1): [Off, On] enables audio rate modulation for filter
frequency via oscillator1. When [FM=On] oscillator1 signal will
be disconnected from the mixer.
History Feature: Xenophone remembers the last edited envelope and shows it by blinking related LED. Thus you
can switch back to the last tweaked envelop only by pressing [ENV] button one time. (For example, imagine the
display shows “Mod Env” page when you use [freq] knob to change filter frequency the display will jump to Filter
edit-page and the “Mod Env LED” start blinking, showing that you can switch back to Mod Env by pressing ENV
button again)
UI-Fixed Mode: As you can only edit envelops with soft-knobs, this feature allows you to edit envelops parameters
and other synth parts at the same time without screen jump. It temporarily enables/disables the “Display Mode = Fixed”, while you are tweaking envelops in “Display Mode = Jump”. For enabling UI-Fixed mode, press [enter]
button in envelop edit-page, then the screen will be locked to env edit-page while you can change other
parameters at the background. For disabling it, press [enter] again.
ENVELOPES
Xenophone has 3 envelopes: Amp, Filter and
Mod. Amp ENV is connected to the master VCA
and Filter ENV is connected to the VCF. Mod
ENV is an auxiliary envelope. All three
envelopes are available as mod source in modmatrix.
Unlike the regular 4 stage ADSR envelopes, here
envelopes have 6 stages DAHDSR:
Delay, attack, decay, hold, sustain, release.
The delay stage provides adjustable wait time
after the envelope trigger, which is useful for
creating delayed-vibrato effect.
The Hold stage freezes the envelope signal level after the attack stage that can be used for increasing
punch in percussive sounds with fast attack and decay. Filter and Mod envelopes have 6 stages, but the
Amp envelope has 5 stages (without delay).
How to change envelopes settings?
Using [E1-E4/ENV] button you can select the envelope edit pages and edit the parameters by soft knobs.
Envelope Style: Besides stage timing, the envelope architecture has a significant role in shaping
and forming the output signal of the envelope. Xenophone features 4 envelopes styles and you can set
different style for each envelope. Linear style is what you can found in most of the digital synths that
has its own linear character. The RC style is based on the vintage envelope design that follows
Legato: For the first key it forces the envelope to start
from the beginning of the attack stage, For the second
key it continues from the current state/level of the
envelope.
Analog1: Always starts the attack stage from the
current level of the envelope without reset to zero
level. It makes sense when long decay or release
time is used.
Analog2: It is the legato version of Analog1.
LFO2SH: Forces the envelope to start from the beginning of the attack stage at each clock cycle of LFO2 when
S&H is selected as waveform.
#FootP: Forces the envelope to start from the beginning of the attack stage, only after receiving MIDI Foot
Pedal message CC#64.
exponential curve of capacitor charge/discharge voltage. RC2 is like RC1 with steeper curve and
Exponential style uses negative slope for attack stage.
Envelope Trigger: Determines where your envelope starts when you play notes:
loop: when [release = 0] the loop function is enabled this means that the envelope will continuously
switch back to the beginning of the attack stage after finishing the decay cycle.
Hold: when [release > 29.0S] it will force the envelope to be opened even without receiving the note-on
message. This feature is useful when you want to hear the external audio without playing a key on the
loop: when [release = 0] the loop function is enabled this means that the envelope will continuously
switch back to the beginning of the attack stage after finishing the decay cycle. In this case the envelope
can be used as LFO with an unusual waveform.
MOD ENVELOPE (DAHDSR)
MOD envelope parameters are the same as filter envelope.
Depth: [-100.0…+100.0] sets LFO depth. Depth represents the
modulation depth at the same time you can set the LFO with
different depth in mod-matrix slot. The depth range covers 1
octave when OSC1/2/3 pitch is selected. (Soft Knob E4)
OSC1/2/3 options can be selected at the same time.
Reset: [Always, Legato, Freerun] sets LFO reset behavior regarding
the played notes. “Always” forces the LFO waveform to start at
zero phase after receiving each note-on message. “legato” only
resets the LFO signal for the first key. “Free-run”never resets LFO.
(Soft Knob E4)
LFO2
For quick accessing to LFO2 settings you can use the [select] button. LFO2 does not have independent
modulation targets, other parameters are the same as LFO1.
LFO3
All parameters of LFO3 are the same as LFO1, except the mod targets:
[none, Filter Freq, Filter Resonance, Noise Level, Main Balance,
Main Volume, DFX Wet Level]
DFX type: sets digital FX type. DFX has three parameters: P0, P1, P2.
These parameters are different for every algorithm: (Soft Knobs E2-4)
Sync: [On, Off] when on, DFX delay time can be controlled with note values between 1/2 and 1/32
notes. The rate is then dependent on the tempo setting. If the selected synced rate for Px is more than
the maximum delay length of the algorithm, it will be marked with an exclamation point “!” on the
screen showing that you must switch to a shorter delay time.(Soft Knob E1)
Distortion: [Light, Dirty, Harsh, Massive] sets the distortion type.
Dry/Wet: [0…127] sets how much the DFX wet (processed) signal is
added to the dry (unprocessed) signal. “0” means 0% Wet (no
effect).
Balance: [-50…+50] sets the amount of balance between Left and
right outputs. (Soft Knob E3)
Volume:[0…127] sets the amount of main volume (program level).
Using The [Select] button you can access the arp/seq edit pages.
The clock settings are shared between the arpeggiator and
sequencer. Arpeggiator and sequencer cannot be used at the same
time. The “Span” option determines which one of them is active.
For both modules, the “gate” value defines note length.
Arpeggiator settings:
Div: [1/32 , 1/16 , 1/8 , 1/4 , 1/2 , 1/32d, 1/16d, 1/8d, 1/4d,
1/2d, 1/32t , 1/16t , 1/8t , 1/4t , 1/2t] sets the duration between
two notes and thus defines the speed, at which the notes are
played. “D” stands for dotted and “T” is for triolic note lengths. (Soft
Knob E2)
Gate:[0…127] defines the gate signal duration.Gate represents the
length of each note. When the gate is set to 64, the length of each
note is half of the time between two successive notes. (Soft Knob E3)
Tempo:[50.0…250.0 bpm] sets the master tempo. Tempo controls
arp/seq speed, LFOs synced rates and DFX synced delay. (fine tune: Soft
Knob E4)
Span: [Off, Up, Down, Up/Down, Step] when off arp/seq function is
off. Up, Down and Up/Down define the arp melodic order. Step
activates sequencer and deactivates arpeggiator. (Soft Knob E2)
Range: [1...3 octave] determines over how many octaves the notes
are spread. (Soft Knob E3)
Latch: [Off, On] When on, latch LED is lit and notes played on the
keyboard will continue to arpeggiate after the keys are released.
The latch function also works when arp/seq is off. (latch button)
Sequencer: can be configured to function as 4 x 16 “analog-style” step sequencer or 4x16 “digital
Sequencer always starts from the first step for each played
note.
No-Reset
Sequencer keeps playing notes from the last step, every time a
new note is played.
Stp-LFO
Free running Step-LFO without reset to first step.
StpLRst
Step-LFO always starts from the first step for each played note.
Seq:Wrap Trigger Ktr
16 Key-RST On
Seq:Velocity
Step
Seq:- ->- - --> -
S4 RST Note:C5 HL
Seq:- ->- - --> -
S1 Velo:100
Each configuration can generate four separate sequence tracks (Note, Velocity, AUX1 and AUX2) at the
same time. When configured as “sequencer” the note track controls voice pitch and the velocity track
controls velocity regarding the “velocity” option. AUX1 and AUX2 are auxiliary tracks and by default they
have no function. All four tracks can be set as a mod source in mod-matrix in order to modulate targets.
When configured as “Step-LFO”, the pitch and velocity control are disabled but all tracks can be used in
mod-matrix. “Trigger” option defines which mode is active.
Wrap:[1…16] sets the loop point for sequencer. When Wrapis set
to 8 for example, the arranged sequence will be restarted every 8
steps. (Soft Knob E2)
Trigger: sets the trigger mode also defines the sequencer or stepLFO mode. (Soft Knob E3)
Ktr: [Off, On] enables/disables key tracking option for sequencer.
When “on” it transposes the arranged sequence regarding the key
you press on your keyboard. When off the pressed key only triggers
the arranged sequence without the pitch transpose. (Soft Knob E4)
Velocity: [Step, Key] When set to “Step” the sequencer uses the
velocity from the velocity track for each step. When set to “Key” it
uses the incoming MIDI note velocity for all steps. (Soft Knob E2)
Sequencer Note Step1…16: [0…127 C0…F#10] sets note number in
sequence track 1 (Soft Knob E3, Symbol “-”). For inserting “rest” in step,
note number must be set to 127 (Soft Knob E2, Symbol “ ”).
Hold Step1…16: [Off, On] activates the hold function for selected
step. When hold is on, the sequencer does not generate gate-off
signal for that step. Hold is useful for generating pitch slide while
portamento defines the slide time.(Soft Knob E4, Symbol “>”)
Sequencer Velocity Step1…16: [1…127] sets the velocity value in
sequencer track 2. (Soft Knob E3)
All sources, whether it is MIDI data or hardware modulator, are converted to the same range. The range
covers [0…+1] for unipolar and [-1…+1] for bipolar sources. Unipolar means that the source is only
increasing (or if applied with negative depth, decreasing) the target’s value. Bipolar means that the source
can increase or decrease the target's value.
LFO1 multiplied by Aftertouch data. (Useful for creating variable depth vibrato)
bipolar
LFO2*AT
LFO2 multiplied by Aftertouch data.
bipolar
LFO3*AT
LFO3 multiplied by Aftertouch data.
bipolar
LFO1*E3
LFO1 multiplied by Modulation Envelope (ENV3).
bipolar
LFO2*E3
LFO2 multiplied by Modulation Envelope (ENV3).
bipolar
LFO3*E3
LFO3 multiplied by Modulation Envelope (ENV3).
bipolar
LFO1*2
LFO1 multiplied by LFO2.
bipolar
LFO1*3
LFO1 multiplied by LFO3.
bipolar
SEQ-T1
Current value of sequencer track1 (note).
unipolar
SEQ-T2
Current value of sequencer track2 (velocity).
unipolar
SEQ-T3
Current value of sequencer track3 (AUX1).
unipolar
SEQ-T4
Current value of sequencer track4 (AUX2).
unipolar
ATouchP
MIDI Polyphonic aftertouch data.
unipolar
Target Name
Description
Target Name
Description
None
No source.
Master Bal
OSC1 Pitch
The tuning of oscillator 1 in semitones (+12…-
12). A mod depth value of +100% transposes the
oscillator one octave up, -100% transposes one
octave down.
DFX Wet
--
OSC2 Pitch
See OSC1 Pitch description
LFO1 Rate
--
OSC3 Pitch
See OSC1 Pitch description
LFO2 Rate
--
OSC1+2 Pitch
Oscillator 1 and 2 pitch
LFO3 Rate
--
Main Pitch
Oscillator 1, 2 and 3 pitch
LFO1 Depth
--
OSC1 PitchW
The tuning of oscillator 1 in octave (+10…-10). A
mod depth value of +100% transposes the
oscillator 10 octaves up, -100% transposes 10
octaves down. (Wide Pitch)
AUDIO INPUT: 1x 1/4" TRS jack (Unbalanced)
MAXIMUM INPUT LEVEL: -5.5dBV (0.53 VRMS)
INPUT IMPEDANCE: 75k Ohm
HEADPHONE OUT: 1x 1/4" TRS stereo jack
CV/GATE INPUT/OUTPUT: 1x 1/4" TRS jack
CV/GATE OUT RANGE: CV=0…+10v DC, Gate=0/5v DC
CV/GATE IN RANGE: CV=-5…+5v DC, Gate=0…12v DC
MIDI CONNECTIONS: MIDI In, MIDI Out
USB PORT: 1x Type B
OPERATING SYSTEM: Flash Upgradeable Via USB
REAL-TIME CONTROLLERS: 26 endless encoders, 27 Buttons
POWER CONSUMPTION: 10 Watts max (12v DC)
DIMENSIONS (WXHXD): 12.9" L x 1.9" W x 6.5" H (32.8 cm x 5 cm x 16.7 cm)
WEIGHT: 2.8 lb (1.3 kg)
Specifications are subject to change without notice.
If you encounter any problems, or you have suggestions for future revisions, don’t hesitate to contact our technical