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Dual Voltage Controlled Oscillator

This module combines two VOLTAGE CONTROLLED OSCILLATOR circuits in one double-width unit. The two oscillator halves enter a symbiosis in that they share some controls which affect both while other functions are individual to each oscillator. Each oscillator has its own octave range switch (32’...2’ plus low frequency and wide settings, ‘wide’ augmenting the range of the tune pots to the whole ten octave span of the oscillators).

The master tune control on the left side affects both vcos while the corresponding pot on the right controls the detune interval beween vco 1 and 2. Bipolar attenuators for frequency and pulse width modulation with their corresponding input jacks are separate as are the two pulse width controls.

The central waveform selector controls both wave outputs 1 and 2 while three additional output jacks provide sine, sawtooth and pulse waves of oscillator 2; the output area is completed by a white noise source. More individual wave outputs can be obtained by adding the 501E expander module. The seven control voltage inputs allow control of fre- quency modulation and pulse width modulation of vco 1 and 2. Two more jacks control frequency (1V/oct) while the central cv input jack controls both oscillators at once.

Oscillator Expander

The OSCILLATOR EXPANDER adds more inputs and outputs to the 501D dual oscillator.
Ten output jacks provide the individual waveform outputs of
oscillator 1 and 2: sine, sawtooth, triangle, rectangular and pulse.
The four inputs expand both vcos by linear frequency modulation and hard sync.

Oscillator Mixer

The OSCILLATOR MIXER blends the combined outputs of oscillator 1 and 2,
plus three individual outputs of oscillator 1 (sine, sawtooth, pulse) and white noise.
The attenuators allow to invert the source signals, too.
Each channel has its own mute switch with a LED.
The three out jacks provide a mixed output of both oscillator sources plus two individual outputs for vco 1 and 2 overriding the six mute switches (always ‘on’).

Dual Voltage Controlled Amplifier

The OSCILLATOR EXPANDER adds more inputs and outputs to the 501D dual oscillator.
Ten output jacks provide the individual waveform outputs of
oscillator 1 and 2: sine, sawtooth, triangle, rectangular and pulse.
The four inputs expand both vcos by linear frequency modulation and hard sync.

Voltage Controlled Multi Mode Filter

The MULTI MODE FILTER features low pass, high pass, band pass (12 dB/oct each) and notch mode (6 dB/oct), which are available simultaneously as well as combined at the mixed output, where the filter mode is voltage controlled.

Voltage Controlled Modifier

The MODIFIER module is a combination of voltage controlled low pass filter and voltage controlled amplifier connected in series.
The VCF is a ladder type lowpass filter featuring switchable slopes (12/18/24 dB/oct) and voltage controllable regeneration. In addition to the manual frequency and resonance dials there are three attenuated control voltage inputs for filter cutoff (bipo- lar), resonance and amplifier gain. The vca bypass switch opens the amplifier.

511 AC
Quad Voltage Cotrolled Gate Delay

he QUAD GATE DELAY combines four voltage controlled gate delay circuits in one module, which delay the incoming gate signals in a range from ca. 1 ms up to 20 seconds. Each delay unit hat its own pair of display LEDs.
The four gate in/ outputs are internally connected like this: Output 1 goes into input 2, output 2 goes into input 3 and output 3 goes into input 4. The ‘Manual Gate’ button affects delay input 1. The time control voltage inputs are daisy chained. Input 1 is internally connected to +10 volts. 

Voltage Controlled Envelope Generator

The VOLTAGE CONTROLLED ENVELOPE GENERATOR in typical ADSR-Style with five voltage controlled parameters with associat- ed attenuator knobs: attack time, decay time, sustain level, release time and envelope amplitude. The input jack for the amount of contour control is internally connected to +10 volt.
The time parameters range from 1 ms to ap- prox. 20 s (at full mo- dulation). The time control voltage inputs are daisy chained. Control range is 0-10 v. Two LEDs serve as indicator lamps for ’gate pulse present‘ and for the envelope output.

Dual Envelope Generator

The DUAL ENVELOPE GENERATOR module in typical ADSR-Style.
Time ranges from 1 ms to approx. 20 seconds. Gate button for manual triggering (both envelopes).
LEDs for ’gate pulse present‘ and for each stage of the envelope. “Normal” and “Retrig” Mode.

NEW: 517
Coupled Dual Voltage Controlled
High Pass/Low Pass Filter

This module combines two VOLTAGE CONTROLLED FILTER circuits in one triple-width unit.
The two identical filters are switchable high pass/low pass filters with independent controls for cutoff frequency and regeneration.
The four-mode combinator allows using the filters as – two separate filters (”stereo mode“) – two filters in series (”maximum slope“) – notch/band reject mode – band pass mode.
The balance between filter 1 and 2 and the bandwidth are voltage controllable.
An additional jack combines both filters' audio outputs.
Release date to be confirmed

NEW: 517S
Voltage Controlled
High Pass/Low Pass Filter

The SINGLE VOLTAGE CONTROLLED FILTER is one half of the 517 module without the combinator part, featuring a single high pass/low pass filter with voltage controllable cutoff frequency and regeneration.
Available from end of February 2017

Quad Low Frequency Oscillator 

The QUAD LOW FREQUENCY OSCILLATOR module combines four voltage controlled low frequency oscillators.
Each oscillator produces triangle and rectangular waveforms, has a frequency controller, control voltage attenuator (bipolar) and switchable frequency range (“Audio” approx. 0.5 Hz to 4500 Hz, “LFO” approx. 5 minutes/cycle to 40 Hz; these ranges can be expanded vastly via additional control voltages).
Even though the LFOs are V/oct controllable, they are not recommended for serious vco applications.

LFO Assistant

The QUAD LOW FREQUENCY OSCILLATOR ASSISTANT adds three additional waveform outputs to each of the four LFOs of the attached 524 module: sine, positive sawtooth, negative sawtooth.
The four reset input jacks allow syncing of the LFO frequency to external sources as clock pulses, gates outputs etc.
In gate mode each LFO can be gated by external signals

Quad Reversible Attenuators

The QUAD REVERSIBLE ATTENUATOR module features four active bipolar attenuators for audio signals and control voltages.
„0“-position = no output signal present
“+10” position = output signal equals input signal (unity gain)
“-10” Position = output signal equals input signal (unity gain), but inverted
The four input jacks are “chained“, input 1 is internally connected to +10 volts if nothing ist patched.
So the module doubles as single to quad variable voltage source.

525M CP

The M 525M ATTENUATOR/MIXER combines the functionality of the 525 Reversible Attenuator und the 526 Reversible Mixer: Four input channels with mute switches and LEDs, doubling as separate attenuators.
Master outputs with inverting and non-inverting output jacks and master level knob.

Reversible Mixer

The REVERSIBLE MIXER is an active bipolar three channel mixer for audio signals and control voltages with master level control and both inverting and non inverting outputs.
In addition each channel has a dedicated on/off (‘mute‘) switch with its own status LED.
„0“-position = no output signal present
“+10” position = output signal equals input signal (unity gain)
“-10” position = output signal equals input signal (unity gain), but inverted.

544 CP
Utility Module

The M 544 CP UTILITY MODULE incorporates a couple of useful control voltage and logic functions.
· Two attenuators which double as 2-channel mixer and inverter
· Slew limiter
· Gate delay
· 3-input voltage summer/inverter
· 3-input gate summer/inverter

Midi-to-CV Interface

The MIDI TO CONTROL VOLTAGE converts MIDI data into analog control voltages.
A MIDI note-on command gets converted into a keyboard control voltage and gate signal, the third output turns the note-on velocity into a corresponding control voltage.
Three more output jacks on the left generate voltages from pitch- and modulation wheel controllers. The jack labeled “Controller” puts out a voltage from one of 9 selectable MIDI controller sources, e. g. after touch · breath controller pedal · sustain pedal panorama · master volume.
Three toggle switches enable
(a) pitch bending to be added to keyboard cv
(b) change of note priority (highest, lowest, last note)
(c) legato mode.
The MIDI channel is selectable from 1-16.

Control Voltage to Midi Converter

The CONTROL VOLTAGE TO MIDI CONVERTER module enables the user to integrate modern midi- and even computer-generated instruments and effects into his modular environment.
Control your midi-equipment from your analog sequencer or from other control voltage generating devices.
This module features four input pairs for control voltages (0 -10 volts) and gate signals to be transformed into midi-compatible control data. Each input pair can be indepentently transformed into one the following types of midi data:
· Note-on/note-off · Velocity (w/note-on) · Pitch bend · Modulation wheel (CC1)
· Breath controller (CC2) · Pedal (CC4) · Volume (CC7) · Panorama (CC10)
· Special (CC20) · Channel after touch · Sustain Pedal · Program Change
Note output can be transposed via midi information or control voltage.

Midi-to-Clock Interface

The MIDI TO CLOCK converts a MIDI clock into analog clock and gate-signals,
to synchronize e. g. anaog step-sequencers to MIDI-hardware- or software-sequencers.
The M553 derives clock signals from the native MIDI clock resolution of 1/96 notes up to 1/4 notes.
The right clock-output supplies a fixed clock signal of 1/16 notes.
The start/stop jacks supply relevant trigger-signals from MIDI start/stop commands
while the two „note-on...” jacks supply gate signals, derived from MIDI note-on commands.
The MIDI channel is selectable 1-16.

Octal Clock Divider

The OCTAL CLOCK DIVIDER combines 8 divider circuits in one module.
Each of the dividers offers twelve division factors: 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 10 · 12 · 16 and 32.
The input jacks are normalized to allow complex divider combinations without external patching:
Input 1 is daisy chained to input 3, input 3 to 5, input 5 to 7. Output 1 is daisy chained to input 2, output 3 to input 4, output 5 to input 6, output 7 to input 8.
Input 8 can be configured (jumper on the main circuit board) to serve as master reset input for dividers 1 to 7.

Trigger Sequencer

An EIGHT STEP/FOUR ROW TRIGGER SEQUENCER with built-in clock-oscillator.
The 32 switches (with associated LEDs) have three positions each: gate-on, gate-off and reset. Switch-on time (adjustable width of the gate pulse) is independently variable for each of the four busses.
Two buttons to shift and reset the trigger position manually (all four rows); two buttons with associated trigger inputs to start and stop the internal oscillator.
One input to reset the sequencer to position 1 via trigger pulse.
Four independent trigger inputs, one for each bus. The jacks are „switched“, so that, if e. g. only input 1 is used, inputs 2/3/4 are affected as well. If none of the sockets is used, the built- in clock oscillator is active. There are four trigger/gate-outputs for the four rows of switches. The module is four units wide.

Trigger Sequencer Expander

The TRIGGER SEQUENCER EXPANDER MODULE for the M563 V2 Trigger Sequencer.
Each of the 32 step positions of the connected M563 V2 has now his own dedicated output jack.

Sequential Divider Switch

The SEQUENTIAL DIVIDER SWITCH is a combination of a sequential 4-to-1/1-to-4 bidirectional electronic switch with clock divider.
Each switch has its own set-button for manual activation, trigger input (positive edge) and classic style indicator lamps. One output/input-jack, four output/input jacks, clock input to shift the switch position.
Four counter circuits, doubling as clock dividers, are connected in series with adjustable divider ratios.
Ratio switch positions:
SKIP = skip step - 1 = shift after 1 clock pulse - 2 = shift after 2 clock pulses - 3 = shift after 3 clock pulses
- 4 = shift after 4 clock pulses - 8 = shift after 8 clock pulses.
Each switch has its own gate output: ‘on‘ as long as step is active).

565 v3
Quad Quantizer

QUAD QUANTIZER featuring four independent quantizer circuits forces variable control voltages into semitone intervals (1/12 volt) over a bipolar input voltage range of more than twenty octaves (255 semitones).
Gate pulses fed into the “Gate In“- jack trigger the quantizer. An “open“ gate input quantizes, i. e. if no gate jacks are patched. The four gate-ins are passed through, one plugged IN 1 feeds IN 2 to IN 4 as well.
The gate outputs supply a pulse, when- ever the (quantized) output voltage changes. The most recent quantized value remains preserved until the next quantization will occur.

Quantizer Controller

The QUANTIZER CONTROLLER allows to limit the output voltages generated by the M 565 v3 Quad Quantizer to any desired key, chord or note interval. Using the array of 12 keyboard-like arranged LED buttons,
notes can be activated or deactivated in any combination. Up to two M 565 D Quantizer Controller modules can be connected to a single M565v3. If only one M565D is connected, all 4 channels are forced to its settings.
If two M 565 D are connected channels 1 and 2 are controlled by the first and channels 3 and 4 by the second. Multiple quantization settings can be stored if a M 567 Universal Programmer is connected to the M 565 v3.

Universal Programmer

The UNIVERSAL PROGRAMMER MODULE enables the user to save and recall settings from the 568 sequencer, 565D quantizer controller and future modules. The 567 can save 2 x 8 settings in its non volatile memory. Operation is simple. Via the push buttons the user selects one of 8 memory slots. Two memory banks are selected via the bank buttons. Four push buttons control the memory operations. With the lower “go to” buttons/ jacks one can step through memory positions in either direction, even by trigger pulses from external sources (or from a 568 itself).
This way extremely long trigger sequences could be made possible.

Quad Sequential
Trigger Source

The QUAD SEQUENTIAL TRIGGER SOURCE is a trigger sequencer featuring four tracks of trigger positions, each with 32 steps, which can be combined to one long sequence of up to 128 steps: 4 sequences up to 32 steps, 2 sequences up to 64 steps or 1 sequence up to 128 steps. The gate positions are activated by pushing the associated button. The LED lights up. Pushing the button again deactivates the respective gate position. More than one reset position per row can be set. The active reset buttons are displayed by means of blinking LEDs. In 2 x 64 mode the gate outputs 1 and 2 respectively 3 and 4 deliver the same output, while the switch-on times of both parallel outputs may be different. This means: E. g. output 1 with a short gate time provides all active gates, while output 2 with a really long gate time provides only a few „long“ gate signals. In 1 x 128 mode the four gate outputs provide four times the same signal in parallel. This time with individual gate lengths, as desired, as well.

QSTS Assistant

The QSTS ASSISTANT MODULE expands the basic M 568 by more inputs and outputs. The four left jacks are reset inputs to have the four sequencer rows of the 568 be reset independently from external sources. The central eight jacks provide trigger outputs, which can be assigned to selectable positions - two on each row of the 568. The rotary switches on the right side of the module allow to change the running direction of the four rows indepentently: forward, backwards, ping-pong and random order.

Quad Sequential
Voltage Source

The QUAD SEQUENTIAL VOLTAGE SOURCE is an analog step-sequencer with up to 32 positions, arranged in four rows. Each row can be controlled absolutely inde- pendent from each other, so that the user has practically up to four separate sequencers at his disposal, each with its own clock- and reset- input jacks, and – at the same time – different running directions (up, down, random and “ping-pong“).
In addition the control voltage outputs can be switched between three ranges (2V, 5V and 10V), with the 2V and 5V ranges supplying a (to 1/12 V) quantized output voltage.
Each step position has its own “step-mode“- switch to toggle the gate signal of the respective step position on or off. In the “Function“ position it (again separately for the four rows) can defined as skip, reset or stop-command. 

569 EGB and 569 ESB
Basic Sequencer Expander Modules

The M 569 ESB and M 569 EGB EXPANDERS are basic companion modules to the M 569 Sequencer.
The M 569 ESB expands the M569 by four switchable set inputs, one position per row can be specified. The M 569 EGB expands the M 569 by four switchable gate outputs, one position per row can be specified.

569EG and 569ES
Sequencer Expanders

The M569EG and M569ES EXPANDERS are similar companion modules to
the M 569 Quad Sequential Voltage Source.

The M 569 EG expands the M 569 by 32 individual gate outputs and allows
direct access to every single step position.

The M 569 ES expands the M569 by 32 individual
set inputs and allows the direct positioning to each step.

NEW: 569LE
Quad Lag Expander

The M569LE EXPANDER is another companion module to the M 569 which expands the sequencer's four rows by four lag voltage outputs (aka portamento). Each row has its own lag rate control as well as switchable on/off/gated mode and switchable lag function for rising or falling edge only or both.

Quad Switch Matrix

The QUAD SWITCH MATRIX ROUTER is a passive module, where 2 x 4 output jacks (“destinations“) can be routed in pairs to 2 x 4 signal inputs (“sources“) using four 6-way rotary switches with two “off “-positions.
This simple device is intended as a companion module to the M552, but suitable for a multitude of applications, where audio- and control-signals have to be routed fast and with immediate visual feedback. 

Reversible Modulation Matrix

The REVERSIBLE MODULATION MATRIX combines six attenuator-units, consisting of three elements each:
· 12 position input selector to choose one of 12 signal inputs
· reversible attenuator, which attenuates or amplifies the input signal in a range from -200 % to +200 %; in zero-position the signal is suppressed completely
· 12 position output selector to chose one of 12 signal outputs
The complete modulation matrix consists of three (or in one special case two) modules – the central active control unit M 592 and the sub-modules M 592i/592o with 12 in- and 12 output-jacks.
The inputs are connected via switching jacks: one single modulation source can – without any extra patchcord – routed to several different outputs at once, via independent attenuators.


MULTIPLE MODULE with 3 x 4 sets of jacks.
By using the two additional ‘break’-jacks, one can use this module as one,
two or three independent four-jack- multiple areas.

Jack Interface Module

INTERFACE MODULE with eight sets of jacks:
· 1/4” (6,35 mm)
· Banana
· 1/8” (3,5 mm).

Blank Faceplates

BLANK FACEPLATES with or without the ’Moonface‘ logo,
in one or two unit widths.