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Items 1 to 14 of 14 on page 1 of 1
Cat: 732843 Rel: 08 Oct 19
 
Vactrol based low pass gate - 3HP
Notes: Erica Pico LPG is our take on classical Don Buchla LPG designs. We use vactrols in the circuit for that signature sound, and we added some more features, like configurable resonance and built-in decay envelope.
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 1 in stock $115.23
Cat: 745794 Rel: 10 Sep 19
 
3-way logic module featuring two internal signal inverters - 8HP
Notes: 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 available 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.
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 1 in stock $104.76
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Cat: 745776 Rel: 09 Sep 19
 
12HP random voltage generator for Eurorack, with 4 CV outputs
Notes: Module A-149-1 is the first module of the A-149-x range. In this group we present by popular request several functions of Don Buchla's "Source of Uncertainty 265/266" (SOU) modules that cannot be realized with existing A-100 modules. Many functions of Buchla's 265 and 266 SOU can be realized with existing A-100 modules. For details please refer to A-100 patch examples.

Module A-149-1 has available four different analogue random control voltages that are generated in different ways.

The "Quantized Random Voltages" section has available 2 CV outputs: "N+1 states" and "2N states". N is an integer number in the range 1...6 that can be adjusted with the manual control (Man N) and an external control voltage CVN with attenuator. Whenever the rising edge of the input clock signal (Clk In) appears a new random voltage is generated at the N+1 resp. 2N output. The N+1 output is capable to generate N+1 different voltage levels (or states), the 2N output up to 2N different states. If for example N is set to 4 the N+1 output generates up to 5, the 2N output 16 different states. The voltage steps of the 2N output are adjusted to 1/12 V in the factory. Consequently, exact semitones can be obtained in combination with a VCO. The voltage steps of the n+1 output are adjusted to 1.0 V in the factory corresponding to octave intervals in combination with a VCO. For each output a trimming potentiometer is available on the pc board that enables the user to select other voltage steps for the output in question.

Even the "Stored Random Voltages" section has 2 stepped CV outputs available: one with even voltage distribution of the max. 256 output states and second one with adjustable voltage distribution probability. The distribution probability is adjusted by a manual control (Man D) and an external control voltage CVD with attenuator. With the control set fully counter-clockwise most of the random voltages will be low magnitude but even medium and high magnitude voltages may appear but with smaller probability. As the control is turned to the right (or a positive control voltage appears at the CVD input) the distribution moves through medium to high magnitude voltage probability. The symbol at the lower jack socket shows this coherence graphically. The voltage range is 0...+5V for both outputs of the "Stored Random Voltages" section. For each output a trimming potentiometer is available on the pc board that enables the user to select another voltage range for the output in question.

The A-149-1 can be extended by 8 random digital voltages with the A-149-2 Digital Random Voltages module.
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 2 in stock $103.71
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Cat: 745785 Rel: 10 Sep 19
 
Dual quantizer for CV's, converting a continuous positive input voltage into a stepped output voltage - 8HP
Notes: Module A-156 is a Dual Control Voltage Quantizer. A quantizer converts a continuous control voltage in the range 0...+10V into a stepped output voltage in the same voltage range (i.e. only certain voltages occur). Normally 1/12 V steps are used to obtain semitone steps. Quantizer 2 of the A-156 allows has more sophisticated quantizing modes like major scale (i.e. only voltages corresponding to the major scale), minor scale, major chord, minor chord, fundamental + fifth and addition of seventh or sixth when chords are selected. Only those voltages appear at the CV output which comply with the selection rule (e.g. minor chord with seventh). The mode setting of quantizer 2 is done with 3 switches (1-0-1 type with middle position). From the factory quantizer 1 is working in the semitone mode. But there is a jumper on the pc board that can be changed so that even quantizer 1 uses the same scale as quantizer 2.

For each quantizer the following in/outputs are available:

- Control voltage input (CV In): The input for the continuous voltage to be quantized
- Control voltage output (CV Out): The output of the quantized voltage
- Trigger input (Trig.In): If this jack is left open the quantizer is working permanently. If a rectangle voltage is applied quantisation happens only at the rising edge of the signal (e.g. from an LFO or MIDI-to-Sync interface). Thus the quantizing can be synchronized with other events
- Trigger output (Trig.Out): Whenever a quantisation happens (i.e. a new voltage is generated at the CV Out) a positive pulse occurs at this output. It may be used to trigger an envelope generator (ADSR) or for triggering other modules (sequential switch A-151, trigger divider/sequencer A-160/161, trigger delay A-162, ...). If none of these functions are used the jack is left open

On top of that the A-156 is provided with a common transpose CV input having an additive effect on both quantizers. This input is quantized in semitone steps. A typical application is the transposition of a sequence generated by the A-155 by a second control voltage (e.g. coming from the MIDI-CV interface A-190).

Typical applications:

- Quantizing the CV sequence generated by an A-155 (semitone, only major scale, only minor scale and so on)
- Quantizing the voltage coming from the Trautonium Manual / Ribbon Controller A-198, Theremin A-178 or Light-to-CV module A-179 to get accurate semitones or major/minor scale tones
- Arpeggio-like effects with LFO, random, noise, envelope generators as CV sources (for negative or symmetrical voltages an offset must be added, e.g. with the offset/attenuator module A-129-3, to obtain positive voltages for the A-156 input)
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 1 in stock $113.14
Cat: 732855 Rel: 10 Sep 19
 
Expanded version of the popular Yocto (808) cowbell
Notes: Latvian modular specialists Erica take on the 808 cowbell. Based on the classic sound, reinvented for Eurorack with tune and decay controls plus tuning CV and accent inputs.

Supplier notes:
Erica Synths Cowbell module is an extended, modular version of Yocto (808) cowbell. For more sonic versatility we have added Tune and Decay controls, as well as Tune CV with an attenuator for nice vibratos. The module is developed in collaboration with a French company e-licktronic.
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 3 in stock $113.14
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MFB Digital Delay Module (synth module)
MFB
Cat: 695614 Rel: 16 Sep 19
 
CV controllable digital delay with delay time from 2ms to 4000ms
Notes: The Digital Delay Module is a CV controllable digital echo with delay times of about 2 ms to 4 seconds.

The circuit comes from the MEGAZWERG has been improved in some points.

The audio signal is connected to the "In" socket and is connected to the "Out" socket again, depending on the Mix knob (left Original, right the Delayed). The signal can be limited with the "In" control. The LED indicates an overload.

The delay time is set with the Time slider and can be modulated via the CV Time input.

With the switch "Freeze" or with a positive voltage at the "Freeze In" the input signal can be frozen.

If the "Time" control is set to max. is equal to the input voltage at CV Time about 1V/oct and the range is 4 octaves.

With the "Range" control the delay can be roughly changed in time steps. The Feedback slider adjusts the amount of signal feedback. Using the FB Send and FB Return jacks, the feedback signal can be tapped separately, routed to another module or external effects unit, and fed back into the delay.

The module is compatible in design and bus power supply to the Doepfer A-100 modular system.

The power consumption is +/- 30 mA. The module has a width of 8 HP (40 mm).
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 4 in stock $118.39
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2hp
Cat: 727389 Rel: 02 Oct 19
 
Digital oscillator module with sub output & wavefolding - black
Notes: Sine is a harmonically pure VCO with two distinct outputs.

The primary output contains a perfect sine wave with a wide frequency range and pristine volt per octave tracking. The Sub output features two sine tones that can be blended together to achieve a mix of one octave below, or a fifth above the primary output's frequency.

In addition, both outputs have an internal wavefolder that adds harmonic content to the signal allowing for spectrally complex tones within a single module. Keep your tones pure (or not!) with Sine.
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 2 in stock $144.57
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Cat: 745781 Rel: 09 Sep 19
 
Complex switch/multiplexer unit - 16HP
Notes: Module A152 is a very useful switching and T&H module. It combines a voltage addressed 1-to-8 multiplexer and 8 fold T&H that can be used as kind of an analogue shift register too. The active in/output is displayed by a LED. The digital output of the currently addressed step outputs "high". The remaining digital outputs are low.

Instead of voltage control even clock/reset controlled addressing of the active step is possible. The rising edge of each clock signal causes an advance to the next state. The rising edge of the reset signal resets to step 1.

The sum of the voltages coming from the manual Address control and the CV input define the currently addressed step of the 3 sub-devices. If the module is controlled by clock and reset the control voltage has to remain unchanged as the CV control has priority over the clock/reset control (e.g. simply turn the CV control fully counter-clockwise and do not touch the Address control knob).

Sub-device #1 is the bidirectional 8-fold multiplexer (kind of an electronical 8-fold rotary switch). Bidirectional means that it works into both directions like a mechanical rotary switch: the common socket may work as an output that is connected to one of the 8 inputs that are e.g. connected to modulation or audio sources. But the common socket may even function as input. In this case the signal applied to the common socket is output to the currently addressed single socket. The voltage range of the in/outputs to be switched is the full A-100 voltage range -12V....+12V. All A-100 signals can be switched without any restrictions.

Sub-device #2 is the addressed 8-fold T&H. The signal at the common T&H input is connected to the addressed T&H output. As soon as a new output is addressed the last voltage is stored at the output (Track&Hold function). The T&H section of the A-152 allows the emulation of the "toggling T&H" function of the Buchla module 266 "Source of Uncertainty". Only the first two T&H outputs of the A-152 are required for this application. This unit can be used also as kind of an analogue (shift) register. The difference to a "real" analogue shift register is that the sampled output voltages are not shifted to the next output but remain allocated to the same output. But in some cases (e.g. controlling the pitch of 3 VCOs by 3 output voltages of the A-152) the result is the same.

Sub-device #3 is the digital output section. The digital output of the currently addressed turns to "high". All other digital outputs are low. The digital outputs can be used to trigger e.g. envelope generators or to control the reset input in the clocked mode to reduce the number of addressed stages.
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 1 in stock $121.52
Cat: 745787 Rel: 10 Sep 19
 
Voltage-controlled clock multiplier with CV or manual control - 4HP
Notes: 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. Nine 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.

Technical note: Due to the nature of clock multiplying it takes a few input clock pulses until the clock output is stable. One has to average a few input clock pulses to generate the multiplied clock output signal. Even when the input clock frequency changes it will take a few cycles until the output clock signal is correct as the module cannot foresee the future of the clock input signal. The generated clock output signal is derived from the last few cycles of the clock input signal. Consequently the module should be driven only by a clock signal with constant or slowly changing frequency.
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 1 in stock $100.57
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Cat: 577757 Rel: 10 Sep 19
 
Dual quantizer for CV's, converting a continuous positive input voltage into a stepped output voltage - 8HP
Notes: Module A-156 is a Dual Control Voltage Quantizer. A quantizer converts a continuous control voltage in the range 0...+10V into a stepped output voltage in the same voltage range (i.e. only certain voltages occur). Normally 1/12 V steps are used to obtain semitone steps. Quantizer 2 of the A-156 allows has more sophisticated quantizing modes like major scale (i.e. only voltages corresponding to the major scale), minor scale, major chord, minor chord, fundamental + fifth and addition of seventh or sixth when chords are selected. Only those voltages appear at the CV output which comply with the selection rule (e.g. minor chord with seventh). The mode setting of quantizer 2 is done with 3 switches (1-0-1 type with middle position). From the factory quantizer 1 is working in the semitone mode. But there is a jumper on the pc board that can be changed so that even quantizer 1 uses the same scale as quantizer 2.

For each quantizer the following in/outputs are available:

- Control voltage input (CV In): The input for the continuous voltage to be quantized
- Control voltage output (CV Out): The output of the quantized voltage
- Trigger input (Trig.In): If this jack is left open the quantizer is working permanently. If a rectangle voltage is applied quantisation happens only at the rising edge of the signal (e.g. from an LFO or MIDI-to-Sync interface). Thus the quantizing can be synchronized with other events
- Trigger output (Trig.Out): Whenever a quantisation happens (i.e. a new voltage is generated at the CV Out) a positive pulse occurs at this output. It may be used to trigger an envelope generator (ADSR) or for triggering other modules (sequential switch A-151, trigger divider/sequencer A-160/161, trigger delay A-162, ...). If none of these functions are used the jack is left open

On top of that the A-156 is provided with a common transpose CV input having an additive effect on both quantizers. This input is quantized in semitone steps. A typical application is the transposition of a sequence generated by the A-155 by a second control voltage (e.g. coming from the MIDI-CV interface A-190).

Typical applications:

- Quantizing the CV sequence generated by an A-155 (semitone, only major scale, only minor scale and so on)
- Quantizing the voltage coming from the Trautonium Manual / Ribbon Controller A-198, Theremin A-178 or Light-to-CV module A-179 to get accurate semitones or major/minor scale tones
- Arpeggio-like effects with LFO, random, noise, envelope generators as CV sources (for negative or symmetrical voltages an offset must be added, e.g. with the offset/attenuator module A-129-3, to obtain positive voltages for the A-156 input)
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 1 in stock $119.42
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MFB
Cat: 695605 Rel: 16 Sep 19
 
Analogue synth module composed of three drum voices - 12HP
Notes: The module CB/RS/MA-522 is an enhanced circuit previously used in the MFB 522, Tanzbar Lite and Tanzbar drum machine.

As a modular concept you have the possibility to control the parameter DECAY and TUNE via CV-signals from Envelopes, LFOs and Step Sequencers.

The unit can be triggered by different signals. Besides sequencer generated analogue and digital trigger-signals drum pads, piezo pickups and dynamic mics may also be used. Here the SENS controls allow individual adjustment of the input sensitivity. Dynamic triggers also change the volume, tone length and pitch.

The functions of Cowbell in detail:
DECAY adjusts the decay time.
TUNE sets the cowbells frequency.
The functions of Rimshot in detail:
DECAY adjusts the decay time.
TUNE calibrates the frequency.
The Maracas owns a DECAY who sets the release time.
The modul provides the new developed M-Bus connection. Midi signals can control following destinations:
Trigger Cowbell MIDI Note #41, MIDI CC for Tune = 21, Decay = 37
Trigger Rimshot MIDI Note #37, MIDI CC, Tune = 19, Decay = 35
Trigger Maracas MIDI Note #70, MIDI CC, Decay = 46

The module has a width of 12 HP (60mm).
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 1 in stock $108.96
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MFB
Cat: 695608 Rel: 16 Sep 19
 
Analogue synth module composed of three drum voices - 12HP
Notes: The module TT/CO/CL 522 is an enhanced circuit was used before in the MFB 522, Tanzbar Lite and Tanzbar drum machine.

As a modular concept you have the possibility to control the parameter DECAY, TUNE and PITCH (only Tom/Conga) via CV-signals from Envelopes, LFOs and Step Sequencers. The unit can be triggered by different signals.

Beside sequencer generated analogue and digital trigger-signals drum pads, piezo pickups and dynamic mics may also be used. Here the SENS controls allow individual adjustment of the input sensitivity. Dynamic triggers also change the volume, tone length and pitch.

The functions of Tom/Conga in detail:

DECAY adjusts the decay time up to one second.
TUNE sets the frequency of the TOM from 80 to 150 Hz (CONGA 120 to 200 Hz).
PITCH controls the duration and intensity of the pitch envelope.
ATTACK sets the click transient of the Tom/Conga.

To switch between Tom and Conga, a trigger impulse is needed.

For the CLAVE, DECAY adjusts the decay time. TUNE calibrates the CLAVE between 800 and 1500 Hz.

The module has a wide of 12 HP (60 mm).
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 2 in stock $103.72
MFB
Cat: 695609 Rel: 16 Sep 19
 
Analogue module composed of three drum voices - 12HP
Notes: The OH/HH/CY module is based upon the cymbal and hihat sound-circuit of the MFB-522 drum-computer, slightly modified and expanded.

The module was developed as a modular component. Therefore, the parameters decay for cymbal and open-hihat and tone can also be controlled by CV-sources like envelopes, LFOs, step-sequencers. Manual adjustment is available for the parameter tune that affects both cymbal and hihat as well as for the closed-hihat's decay.

Triggering open-hihat, closed-hihat and cymbal of the module is possible through various signal types. Besides sequencer generated analogue and digital trigger-signals, drum-pads, piezo and dynamic microphones may also be used. Here, the controls allow individual adjustment of the input sensitivity. Dynamic triggering will not only affect the sound's volume but also attack and sound length slightly. The functions in detail:

HIHAT: The hihat sound is created by several square-oscillators that are fed into a band-pass-filter. Two decay controls allow individual sound-length-adjustments for closed- and open-hihat. In addition, the decay parameter for the open-hihat can be controlled by CV-voltage.

TUNE: Sets the frequency for all square-oscillators simultaneously. Because the cymbal sound accesses the same oscillators, tune also affects this sound.

CYMBAL: The cymbal sound is based upon the same sound source as the hihat, only that it uses two band-pass-filters that individually shape the attack- and decay-phase. However, the decay parameter controls the length of both attack and sound length. This parameter can also be controlled by an external CV-source. Tone sets the balance between the differently filtered signals paths. This parameter is also under CV-control but does not offer an internal attenuator.

A specialty of the cymbal sound is its tone-input. Here, you can connect an external sound source that replaces the internal square-oscillators for the decay phase. The internal oscillators are still in use for the sound's attack-phase.

The module has a width of 12 HP (60 mm).
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 1 in stock $108.96
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Cat: 745617 Rel: 17 Sep 19
 
10HP filter module based on the original parts of a well known Russian Synth
Notes: The Polivoks Filter Module, from Elta Music, utilizes the classic Soviet filter chip for a unique and iconic filter tone, and brings it to the Eurorack modular format. It provides two CV inputs with individual depth pots for ultimate control over cut-off frequency. One input with sensitivity control and four outputs are available simultaneously - lowpass, bandpass, highpass and notch filter types.

Width: 10HP
Current: 20mA
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 2 in stock $139.33
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