Module A-117 is a combination module, including a digital noise generator and an 808 source.

The digital noise generator uses random sequences of square waves (18 step shift register with multiple feedback), whose rate can go from random clicks to pure noise. The colour of the noise is very different from the analog noise produced by the A-118. In addition to a manual setting, the rate can be controlled by an external clock - eg. VCO, LFO or MIDI clock. The 808 Source aims to re-create the sort of multi-oscillator array that was used in Roland's TR-808 and 606 drum machines as the basis of the sound of the hi-hat, cymbals and cowbell. The cowbell mix uses two oscillators, and the cymbals mix six.

Merk:

Doepfer

Type:

Noise

Nummer:

A-117

Diepte:

40mm

Breedte:

8HP

Power:

20mA @ +12V, 10mA @ -12V

Module A-150 (Dual VCS) contains two separate voltage-controlled switches.

Each switch has a control voltage input, a common Out / Input, and two In / Outputs. The switches are bi-directional: they can work in both directions, so can connect one input to either of two outputs, or either of two inputs to one output.

Voltages in the range -12V...+12V at the O/I resp. I/O sockets can be processed by the module.

Two LEDs show which in / output is active (ie. which is connected to the common out / input).

Merk:

Doepfer

Type:

(Sequential) Switch

Nummer:

A-150

Diepte:

30mm

Breedte:

4HP

Power:

30mA @ +12V, 10mA @ -12V

Module A-151 (Quad Sequential Switch) is like an electronic four-position rotary switch.

It includes trigger and reset inputs, four in / outputs, and a common out / input. Each time a pulse is received at the trigger input socket, the common out / input is connected to the next in / output. After the fourth in / output, the next trigger makes it step back to the first again, and so on. A positive pulse at the reset input switches the out / input immediately back to the first in / output.

Voltages in the range -12V...+12V at the O/I resp. I/O sockets can be processed by the module.

Four LEDs indicate the active in / output (ie. the on that is connected to the out / input at any particular time).

From spring 2005 a revised version of the module is available. With an additional switch the number of steps can be set to 2, 3 or  4.

Merk:

Doepfer

Type:

(Sequential) Switch

Nummer:

A-151

Diepte:

35mm

Breedte:

4HP

Power:

20mA @ +12V, 10mA @ -12V

Module A-160 is a frequency divider for clock/trigger/gate signals, designed to be a source of lower frequencies, particularly for rhythm uses.

The Trigger input will take clock signals from, eg., an LFO, MIDI sync, or the gate from a MIDI-CV interface. At the outputs, you have access to the sub-divided clock signals, from half the clock frequency down to 1/64. The low/high levels of the output signals are 0V and about +10V.

The A-160 also has a reset input. Whenever a reset signal is sensed, all outputs are set to zero, until the reset voltage disappears.

The Clock Divider can be used in combination with the A-161 Clock Sequencer to produce stepped sequences with a length from one to eight events.

Merk:

Doepfer

Type:

Clock Divider, Frequency Divider, Clock & Trigger

Nummer:

A-160-1

Diepte:

40mm

Breedte:

4HP

Power:

40mA @ +12V, 0mA @ -12V

Module A-160-2 is an enhanced version of the standard clock divider A-160. The module is a frequency divider for clock/trigger/gate signals, designed to be a source of lower frequencies, particularly for rhythm uses.

The Clock input will take any digital signal from, eg., an LFO, MIDI sync, or the gate from a MIDI-CV interface. At the outputs, you have access to three sets of seven different sub-divided clock signals, from half the clock frequency down to 1/128. The low/high levels of the output signals are 0V and about +10V.

The A-160-2 also has a reset input. Whenever a reset signal is sensed, all outputs are set to certain levels which depend upon the selected mode.

Merk:

Doepfer

Type:

Clock Divider, Clock Multiplier, Clock & Trigger

Nummer:

A-160-2

Diepte:

35mm

Breedte:

4HP

Power:

50mA @ +12V, 0mA @ -12V

Module A-160-5 is a voltage controlled clock multiplier.

The incoming clock signal (socket Clock In) is multiplied by a factor that depends upon the control voltage on socket CV In (0...+5V) and the position of the Mode switch. The multiplied clock signal is available at the socket Clock Out. According to the position of the Mode switch different clock multiplying factors are assigned to the control voltage. With 0V CV no clock output is generated. This state is indicated by "all LEDs off". With increasing CV integer factors (left position of the mode switch), power of two factors (middle position) or a mix of both (right position) are obtained. Eight LEDs are used to show the currently selected multiplying factor. In addition two LEDs are used to display the incoming and outgoing clock signal.
A manual control is used to adjust the clock multiplication factor manually without the need of an external control voltage. The voltage generated by this control ("Manual") is normalled to the CV In socket. As long as no plug is inserted into the CV In socket the clock multiplication factor is adjusted by means of the manual control knob and displayed by the LEDs. For dynamic applications (like the Ratcheting function described below) the manually generated CV is overwritten by the external CV which has to be fed into the CV In socket.
The module can be used for all kind of clock multiplying applications. One important example is the generation of so-called Ratcheting Sequences. The band Tangerine Dream is famous for this kind of sequences. A normal sequencer generates only one gate signal per step. A ratcheting sequence may have also more than one gate pulses per step. This function can be obtained by using the A-160-5: one CV output of the sequencer is used to define the number of gate pulses per step. If the control of the step in question is fully CCW the generated CV is 0V and no gate signal is generated (mute of the step). When the control of the step in question is turned clockwise one, two or more gate pulses are generated depending upon the position of the mode switch and the voltage generated by the CV at this step.

Merk:

Doepfer

Type:

Clock Divider, Clock Multiplier, Clock & Trigger

Nummer:

A-101-2

Diepte:

50mm

Breedte:

8HP

Power:

20mA @ +12V, 20mA @ -12V

Module A-161 is an eight-step Clock Sequencer which is internally connected to the Clock Divider (A-160). The A-161 requires an Clock Divider A-160 and has to be mounted directly to the right of the A-160.

Eight outputs are sequentially switched by the clock signals from the A-160 and can act, for instance, as sequential rhythmic triggers for an envelope. The reset on the A-160 also works on the A-161 (instant return to Step 1).

The low/high levels of the output signals are 0V and about +10V.

In combination with a mixer (A-138) short analog sequences can be generated.

Merk:

Doepfer

Type:

Trigger Sequencer

Nummer:

A-161

Diepte:

40mm

Breedte:

4HP

Power:

20mA @ +12V, 0mA @ -12V

Module A-162 contains two identical circuits that generate a trigger signal with adjustable delay and lenght from an incoming rectangle signal (e.g. gate, trigger, rectangle output of an LFO or VCO).

The rising edge of the incoming signal is used to trigger the new trigger signal. This module makes it possible to delay the onset of a trigger pulse, and also change its length. On each of the two units, two controls can alter the onset time and duration of triggers, from about 2 ms up to more than 10 seconds.

A control LED shows the generated signal.

Merk:

Doepfer

Type:

Clock, Trigger Modifier

Nummer:

A-162

Diepte:

45mm

Breedte:

8HP

Power:

40mA @ +12V, 0mA @ -12V

Dual logic module with 3 inputs for each unit. The logical states of the inputs ("1" = high / "0" = low) are linked together in 3 ways: AND, OR, EXOR (exclusive OR).

The three functions are available simultaneously at three outputs with LED display of the output states. Additionally two inverters are avaliable to obtain the inverted functions NAND, NOR and NEXOR. The sockets of each triple unit are "normalized", i.e. the switched contact of socket 2 is connected to input 1 and the switched contact of socket 3 is connected to input 2. Provided that no plug is inserted into socket 1 resp. socket 2 the socket is connected to the input above it. This simplifies the usage of the module when only 2 signals are combined. E.g. the logic functions AND and OR have different neutral input levels ("1" is the neutral state for AND, "0" is the neutral state for OR). In case of a fixed input level for the unused input one of the functions (AND or OR) would work no longer.

Applications: combination of digital signals of the A-100 (e.g. gates, clocks, triggers), e.g. to obtain "gated" clocks or certain rhythmic patterns.

Merk:

Doepfer

Type:

Logic, Min/Max, Clock, Trigger

Nummer:

A-166

Diepte:

50mm

Breedte:

8HP

Power:

40mA @ +12V, 20mA @ -12V

Module A-190-8 is a Midi/USB to Sync interface.

The main application of the module is the control of clocked A-100 modules like sequencers (A-155), sequencer controllers (A-154), trigger divider (A-160 or A-163), trigger sequencer (A-161) and similar units. It may be used also to reset or sync LFOs (e.g. A-145, A-147, A-143-4) or to trigger envelope generators (A-140, A-141-2, A-143-1, A-143-2) with a fixed clock rate.

Merk:

Doepfer

Type:

Midi/USB to CV/Gate/Sync

Nummer:

A-190-8

Diepte:

50mm

Breedte:

6HP

Power:

50mA @ +12V, 0mA @ -12V

The fourMulator is a quad digital, voltage controllable LFO with Tap-Tempo and LFO synchronisation to an external clock. Synchronisation to an adjacent LFO is possible as well and gives you the possibility to shift the LFO’s phase.

The fourMulator contains four (digital) LFOs with following waveforms: rising and falling sawtooth, square, triangle, sine and random (S&H) and it works beyond this as a clock generator with tap-tempo function.

Each LFO can be free-running, synchronized to the master clock or synchronized to the preceding LFO. When synched to the clock the LFO can oscillate in a fraction or multiplicator of the clock. When synched to the preceding LFO you can shift it´s phase (and the start of the wave form) continuously up to 180°. Each LFO (called "modulator" in fourmulator language) has a reset input and CV input that always affects the function of the Speed/Phase control, either frequency, clock divisor, clock multiplier or phase. Each modulator has a wave form output and a trigger output that fires a trigger at each start of a waveform. Furthermore you´ll find a master reset input affecting all modulators that don´t use the individual reset input. The Trigger Sequence output carries the sum of all synchronised trigger impulses. By shifting the modulators´ phases you can generate rhythmical structures.

Merk:

Vermona

Type:

LFO

Naam:

FourMulator

Diepte:

25mm

Breedte:

34HP

Power:

120mA @ +12V, 10mA @ -12V

The core of randomRHYTHM is a superb random generator that creates values for each event. Event is the term for the individual note values - randomRHYTHM offers quarter-, eighths-, sixteenth- and triplet-events.

Beside the random value, each event has its own threshold-slider to set a probability whether the event generates a trigger-impulse at the output or not.

randomRHYTHM has two modes: REALTIME and DICE. In REALTIME-mode, new random-values for all events are being generated all the time. In DICE-mode on the other hand, you can dice the random-values for a complete bar which will then be continuously repeated. In short: DICE is for generating cycling and more predictable random results whereas in REALTIME-mode randomness comes out on top.

Merk:

Vermona

Type:

Clock, Trigger, Sequencer

Naam:

RandomRhythm

Diepte:

25mm

Breedte:

24HP

Power:

110mA @ +12V

Metron is a 16-channel trigger and gate sequencer for Eurorack with extensive functions, expansion possibilities and the tools you need to create long sequences with many variations in a very short time.

The sequencer allows pattern lengths of up to 256 steps, and the number of steps per channel can be varied to create interesting and varied rhythmic structures. These patterns can be quickly stored and exchanged between units via the SD card slot. Metron also offers a random function per step and a ratcheting function.

With the optional WMD Voltera, Metron can be expanded with four additional bipolar voltage outputs.

 Features:

• 16 Channels of trigger and gate signals
• intuitive drum sequencer 
• View 4 channels at a time and easily switch views
• Single track view lets you zoom in on a single track and see 64 steps at a time
• Up to 256 step pattern length
• Different pattern lengths per channel
• Five instantly recallable, editable variations
• View and edit variations that are not playing for easy cue and non stop performance play
• Save patterns to SD memory for easy recall on power cycle
• No-stop loading from memory
• Easy view memory previews lets you see a pattern before loading from memory.
• SD allows for easy update as well as easy back up / file transfer from unit to unit
• FX / Fills for instant / momentary variation
• 2 assignable inputs for external CV control
• Tap in patterns with quantized recording with the buttons or external source
• Quick copy / paste / clear functions
• Internal clock with Swing
• dedicated reset output
• MIDI Preset mode lets you send MIDI messages to other modules on the Doepfer CV bus.  (for use with WMD SSM, Malekko Voltage Block, and more)
• Random Pattern Generation
• Probability per step and group probability functions
• Burst per step for ratchet / roll sounds
• Custom Fill Patterns for instant fills
• Trigger Mutes
• Step looping
• Manual gates

Merk:

WMD

Type:

Clock, Trigger, Sequencer

Naam:

Metron

Diepte:

31mm

Breedte:

36HP

Power:

180mA @ +12V, 0mA @ -12V

Voltera is an expander for the Metron trigger and gate sequencer, adding 4 bipolar voltage tracks. Up to 16 Volteras can be connected to a Metron, providing up to 64 CV outputs.

With independent voltage ranges and quantisation settings per track, Voltera allows simultaneous real-time control of 4 different parameters, so you can set the track to the parameter you are sequencing.

When used in conjunction with Voltera, it is possible to easily sequence melodies and parameters with the Metron.

Features

• 4 bipolar voltage outputs in 4HP
• Integrated user interface with Metron
• Quantised and unquantised voltages
• Up to 16 Voltera modules can be connected simultaneously to a Metron
• Independent voltage ranges for each output
• Analogue programming
• Digital accuracy
• Fast haptic operation

Merk:

WMD

Type:

Sequencer

Naam:

Voltera

Diepte:

43mm

Breedte:

4HP

Power:

60mA @ +12V, 15mA @ -12V

The Drum Sequencer is easy to use, classical X0X style live performance oriented sequencer module that provides the ultimate control over your system. Erica Synths Drum Sequencer might be the last modular sequencer for drums and basslines you will ever have to buy!

• 16x trigger outputs
• 12x accent outs
• 1x CV track with scales
• 1x Gate track
• 2x LFO with independent or synced to the BPM frequency
• LFO attenuation per out
• Max pattern length = 64 steps 
• Time signature per Track
• Direction per track/pattern
• Pattern length per Track
• Shuffle per track
• Probability per step
• Retrigger per step
• Time shift per step
• Instant pattern switching
• Solo/Mute tracks
• Step/Tap record modes
• 8 Banks of 16 Patterns
• Quick Copy/Paste per tracks & patterns
• Pattern linking
• Song mode
• MIDI sync in with Start/Stop
• External 4PPQ clock in
• Firmware upgrade via MIDI SysEx​​

Merk:

Erica Synths

Type:

Clock/trigger, sequencer, drum/percussion

Naam:

Drum Sequencer

Diepte:

30mm

Breedte:

42HP

Power:

152mA @ +12V, 56mA @ -12V