Notes: The Hungry Robot Output Module allows users to interface your modular system with headphones, speakers, and recording interfaces. It uses a high quality amplifier circuit to boost the signal to the level you need. It accepts both mono and stereo signals. Plug in you inputs and output however you need, internal switching will automatically route the signal to where it needs to be based on what you have plugged in. As with all Hungry Robot "Modular Boxes" the Output Module can be powered with a simple 9V DC, Negative Center power supply.
-VOLUME: Controls the overall volume of the output. Adjust to taste.
-IN(L/MONO): Left input. Use this if you are running mono and want it split into stereo.
-IN(R): Right Input
-OUT(L/STEREO): Left output. Use this for stereo situations (TRS/Headphones)
-OUT(R): Right Output
Dimensions: 4.7" x 2.6" x 1.5"
Power: 9V DC - Negative Center - 2.1mm Barrel
Notes: This new module should not be judged by it's size, at 6hp it's packed with features.
At its core it features a noise source and two precision Sample & Holds with 0.01% of maximum deviation from the Input which allows for quantized signals to be sent through without any noticeable detuning or the typical voltage drops over time.
The Sample & Hold sections can also be used as a Track & Hold meaning it holds the incoming input while the Trigger input is ON and lets the input flow to the output when the Trigger input is OFF.
Each section also features it's own slew processor with a single control over attack and decay and an ON/OFF switch.
The noise signal is normalled to both sections inputs, meaning that without a jack plugged into the Input the sample and hold function will act upon the incoming noise signal generating random CV values.
The [Trigger A Alternate] switch allows to Link both sections so that any trigger input in Trigger A will alternate between triggering the A and B section.
Besides each section outputs there's also 4 extra outputs: Noise, Difference, Average and Sum. The Noise output is coming from the noise source, the Difference output is the subtraction of section A minus section B, the Average output is the sum of both A plus B and then divided by 2 and finally the Sum output is the sum of both A plus B sections.
Width: 6 HP
Depth: 4 cm
Max current: +50mA/-50mA
Bus Board Cable: 8 × 2 IDC (Doepfer style) connector
Notes: This is our take on a glide/slew circuit. It introduces a time compensation for the glide/slew rate so that any interval have the same glide time.
Normal glides have a fixed speed, they take X time to go up a semitone and X*12 to go up an octave. A compensation circuit was added to detect and dynamically change the speed according to the distance needed to be made, so that in the end it'll take the same time to reach the final destination no matter if the interval is 1 semitone or 3 octaves. This compensation feature (dry/wet) can controlled by the front panel knob or by CV.
. Format: Eurorack
. Width: 4 HP
. Depth: 55 mm
. Max current: 60mA.
. Bus Board Cable: 8 × 2 IDC (Doepfer style) connector.
Notes: Inspired by Twin T-Networks circuits used in many lengendary drum machines, ADDAC system have developed a simple and straight forward 4 voice percussion module with frequency controls for each of its voices.
At each voice input there's a gate to trigger converter so any input source is possible.
Audio inputs can also be used as an input, in this case and due to the nature of the gate to trigger converter, each voice can be used as very destructive filters.
The top 2 channels feature a higher frequency range, the bottom 2 channels feature a lower frequency range.
Notes: ADDAC402B MIDI Expansion allows full I/O Midi control of ADDAC402 plus access to a powerfull midi interface, with:
Allows the module to synchronize with any external MIDI device’s Clock, including transport messages like play, stop and continue.
CV to MIDI:
5 CV inputs (Fills 1 to 4 and Assign) to MIDI Notes and/or CC messages, the Note and CC number can be independently configured via the Configuration Menu.
These CV inputs can be sent on independent MIDI Channels, for ex: Fills 1 to 4 on MIDI Channel 1 and Assign on MIDI Channel 2.
All panel controls (9 knobs, 4 toggle switches and 11 push buttons) can be sent to MIDI Out as CC controls as any standard MIDI controller. The individual CC numbers can be configured through the Configuration Menu.
MIDI to Gate:
All 4 Gate outputs can be controlled/sequenced from an external MIDI device.
For ex: we can configure Gate 1 to be responsive to CC 1, Gate 2 to CC 2 and so on. Everytime CC 1 gets a value of 127 Gate 1 will be turned ON, if it gets a 0 value Gate 1 will be turned OFF.
All panel controls (9 knobs, 4 toggle switches and 11 push buttons) can be controlled/sequenced from MIDI CC controls. This allow full automation of the module via MIDI
The individual CC numbers can be configured through the Configuration Menu and includes a midi learn feature for easier configuration.
Also controllable via MIDI is the change of Presets and Modes.
Notes: Inspired and officially licensed from Teia's Stochastic Function Generator which was introduced in 2013 but is no longer available. This earlier version served as an inspiration, but with a completely rebuilt and reprogrammed mcu to a fully featured 4 voice 2 stage envelope and slew generator.
ADDAC System ADDAC506B VC Stochastic Function Generator Expansion Module (black faceplateADDAC System ADDAC506B VC Stochastic Function Generator Expansion Module (black faceplate
This expansion allows extra I/O to the ADDAC506, namelly:
Notes: The ADDAC111B EXPANSION allows the user to access the first 8 files (a to h) through a trigger.
Files do not play simultaneously, if several triggers happen at the same time top priority goes from top to bottom- meaning that if B E and F triggers are received at once the file that will be played is file B.
The expansion module should be plugged to the back of the Ultra .Wav Player module. There's no connection to the bus boards.
Width: 16 hp
Depth: 3 cm
Control voltage i/o:
CV inputs: i 5v
CV outputs: 0 +10v
Max current: 150ma
Compatible with +-12v and +-15v power supplies
Bus board cable: 8x2 idc (doepfer style) connect
Notes: There are two equal sections in this module labeled A and B.
This module is a peculiar type of mixer that instead of just summing two input signals (X & Y) it also allows the possibility to subtract the two signals.
It works both for audio and CV signals and hence the possibility to get the diference of two CVs or cancel the phase of two audio signals. The resulting signal, of sum or subtraction, is then routed through a switchable (on/off) full rectification circuit labeled: Absolute. After this the gain of the mixed signal goes through another attenuverter labeled: Amplitude to control the resulting signal gain which, being an attenuverter, also allows the possibility to invert the incoming signal. After the Amplitude comes an AC/DC coupling switch followed by an bipolar Offset knob.
Besides the normal output, there's also an inverted output for each of the A & B sections.
The outputs of section A & B are also summed and sent to the Average Output.
Using a single input, just the X or Y input, the module can also be used as a simple dual Attenuverter & Offset CV processor with full rectification and AC coupling options.
Notes: A Comparator is an electronic circuit that compares two voltages and switches its output to indicate which is larger. The Comparator operates between -10 or +10V
The Output is always -10V if below Threshold and +10V if above Threshold.
A Rectifier is an electronic circuit that is used to transform AC signals to an equivalent DC signal while removing one of it's polarities, i.e. Positive rectification excludes negative signals and vice-versa.
Both sections can be used to change the shape of any waveform as well as its harmonic content.
1 Comparator Threshold Knob
1 Comparator Jack Output
2 Comparator Monitor Led1 Common Signal Jack Input
4 Rectificated Outputs
Width: 4 HP
Depth: 2.5 cm
CONTROL VOLTAGE I/O:
CV inputs: i 10v
CV outputs: i10v
Max current: 30mA
Compatible with +-12v and +-15v power supplies
Bus Board Cable: 8 × 2 IDC (Doepfer style) connector
Compact digital oscillator with a resolution of 16Bit/48kHz
Notes: The 'MCO' is a compact digital oscillator. It features a main 'morphing' wavetable output, an additional copy of this output with overlaid variable pulse width segments (ala Alpha Juno style saw wave pwm) and a sub square wave output an octave down to the main output. The waveform and pulse segment width and be both directly and voltage controlled. The pulse segment distribution can also be voltage controlled via the 'type' input.
Expect an early 90s slightly crunchy digital type sound (ala Ensoniq, Kawaii KX synths) rather than something striving for perfect analog emulation.
Notes: The mmMidi is a simple & compact MIDI to CV interface for your Eurorack synthesiser. It translates both MIDI clock and 2 Channels of MIDI note, velocity and gate information to corresponding voltage control signals. The mmMidi is quick to set up and requires minimal configuration.
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).
- 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)
Notes: The LxD, Low Strike Duo, is a dual-response, two channel, direct-coupled, Low Pass Gate, which utilizes vactrols in order to provide simultaneous control over the Amplitude and Frequency Spectrum of an Input Signal.
It is, in essence, a VCFA (Voltage Controlled Filter Amplifier). Unlike the Optomix, the LxD offers two different filter responses. CH. 1 offers a 12db/ Octave response that is mildly-resonant, while CH. 2 offers a 6bd/ Octave that is non-resonant.
The Output of CH. 1 is normalled to the input of CH. 2. This normalization puts the two channels in series, which is similar to the VCF into VCA arrangement made popular by many monosynths of the 1970's.
Notes: Befaco's new Output Module is designed to be the master output for your modular system, providing an extra Cue Input to monitor any signal.
Left IN is routed to both channels when no Right signal is present. Both Outputs are TRS balanced.
A Headphones out is available. You can route Headphone OUT to the main out or an independent signal with CUE switch. Like this you can either pre-listen your sounds with the CUE Input or listen to your main out without disturbing your neighbours!
Level LEDs are available to monitor levels of each signal on the module.
Notes: A-180-9 is another simple but useful tool. It can be used to connect up to 14 signals between different cases by means of standard network cables (RJ45). These cables are available all over world smoothly in different lengths and colours. From the factory two black network cables with 0.5 m length are enclosed.
The upper network connector is wired to the eight sockets 1-8, the lower to the six sockets A-F. That way it's possible to pre-patch different cases and connect signals, that are required in all cases (e.g. clock, start/stop, master CV) by means of one or two cables only instead of 14 individual patch cables. When only eight signals are required only the upper network connector is required and the sockets 1-8 are used. When more than eight signals have to be patched both network connectors have to be used. It's also possible to wire the upper and lower network to different cases (i.e. signals 1-8 to external case #1 and signals A-F to external case#2).
The module is fully passive (no power supply required) and simply wires the 14 sockets to 14 pins of the network connectors.
The A-180-9 comes in pairs for combining two modular systems.
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.
Notes: Tune is a multi-scale pitch quantizer. It features 11 scales ranging from chromatic to octatonic with everything in between. In addition, the bias control allows the user to transpose the melody to a different octave or starting note.
This functionality opens up every musical mode for each of its 11 scales and provides a performable control for transforming melodies on the fly.
Notes: Pluck is a physical modelling synth voice. It uses the Karplus-Strong algorithm to create plucked string sounds. The dampening control sets the size of the string and allows for dramatic timbral shifts.
The decay control changes note length from percussive transients to infinite harp sounds. In addition, four voice polyphony provides complex layered tones; all from a single sound source.
Notes: TM is a probabilistic random sequence generator based on the research of Alan Turing. His Turing machine was a mathematical model of computation that could, in theory, create any output based on a set of instructions and input variables. In a similar way, the TM chooses random values for steps in a sequence based on the user's probability settings. By manipulating probability and sequence length, the module can generate an infinite number of sequences. Whether you're looking for a controlled random source, or an evolving melody generator, TM has you covered.
Notes: Viol Ruina is an all-analogue distortion and lowpass filter with an internal envelope follower and self-modulating cutoff. The four-pole design is reminiscent of the classic filters we all know but with a completely new and slightly ridiculous twist. The independently addressable distortion circuit takes VR into overdriven paradise with a shocking amount of drive. Built-in envelope following makes an easy way to create dynamic patches with the flick of a switch, and feedback FM takes VR to a whole new realm of filthiness. Run a sound through VR, you'll get something cool out of it.
Notes: The Fold Processor is a voltage controlled wave multiplier and sub-octave generator. The circuit is based on a classic diode design that adds odd harmonics by folding the incoming signal, followed by subdivided square waves.
The wave folder creates new waveforms from the standard sine, triangle, sawtooth and square waves, has a dedicated output jack and CV input with an attenuator making it very easy to create beautifully animated folding sounds. Adjustable voltage controlled Inject alters the bias point creating an even wider palette of sounds.
The subdivide generator squares the fold output generating 4 more sounds spaced one octave apart, each with its own gain knob and mixed to the Subdivide output jack. Mixing the four can create anything from discordant square wave swarms to sweet harmonic oscillator stacks, from a stable square version of the folded wave to freaky PLL like glitched slides.
Overall results can sound evil at times and sweet at others, a true multi-faced devil.
Notes: Module A-140-2 contains two ADSR type envelope generators behind a front panel with 8 HP only.
Each ADSR provides these controls and in/outputs:
- LED (displays the envelope output)
- A: manual Attack control
- D: manual Decay control
- S: manual Sustain control
- R: manual Release control
- Gate Input
- Retrigger Input
- CVT Input with attenuator (CVT = CV Time)
- Envelope Output 1
- Envelope Output 2
The output voltage range for each envelope is 0 - 10V. The time range of Attack/Decay/Release is about 1ms to 30s.
By means of internal jumpers one can select which time parameters are controlled by the CVT input (e.g. D only or D+R or A+D+R) and in which direction (i.e. if an increasing CVT shortens or stretches the time parameter in question).
Socket CVT can be normalled to an internal fixed voltage (i.e. the switching contact is connected to an internal fixed voltage). That way it's possible to change all time parameters simultaneously by means of the CVT control.
Another jumper is used to set output 2 to normal or inverted envelope.
And another jumper is used for the normalling of Gate 2 to Gate 1 (i.e. ADSR#2 is also triggered by Gate 1).
Two more jumpers are used for the optional bus access to the gate signal of the bus for each ADSR. Changing the positions of the mentioned jumpers allows to modify the factory settings.
Reverb effects module with spring reverb tank - 8HP
Notes: Module A-199 is a spring reverb module. The reverb effect is electronically simulated by means of 3 spiral springs. Spring reverb systems have a very characteristic sound that is based on the (insufficient) mechanical properties of the springs like signal delays, audio resonances, limited frequency range, acoustic feedback behaviour, sensitivity to mechanical shocks and others.
The 3-spring system used in the A-199 ensures a "dense" reverb because of the different properties of the three springs.
The A-199 implies some special features that are not self-evident for spring reverb units:
The reverb signal can be fed back to the input using the Feedback control. Even self-oscillation of the springs similar to the self-oscillation of filters is available. The feedback loop can lead even via external modules like VCA, VCF, phaser, frequency shifter, vocoder, distortion/waveshaper, ring modulator and others. In this case the reverb output of the A-199 is connected to the input of the external module(s) and the output of the external module(s) is fed back to the Ext. Feedback In socket of the A-199. This socket contains a switch that interrupts the internal feedback loop as soon as a plug is inserted.
Another feature is the Emphasis control. This enables the adjustment of the accentuation of middle frequencies (around ~ 2kHz).
With the Mix control the relation between original and reverb signal appearing at the mix output is adjusted.
Using all these features very extreme and unusual effects can be generated with the A-199.
Notes: Module A-171-2 is a voltage controlled slew limiter with a lot of additional features beyond a simple slew limiter. It's mostly a licensed copy of Ken Stones VCS which is in turn based on the Serge VCS.
Cycle switch = off, no trigger signal applied to Trig socket: Voltage controlled Slew limiter or portamento generator: the signal applied to the signal input is "slewed". The slew up and down times are controlled manually by means of the Up and Down controls, the effect of the CV Up and CV Down control voltages are controlled by the CV Up and CV Down controls, in exponential mode these controls also affect the slew shape (see symbols at the CCW and CW positions of the controls).
If an audio signal is applied an short slew rates are chosen the module works as a simple VCF/VCA combo.
Cycle switch = off, trigger signal applied to Trig socket, no input signal: Simple Attack/Decay envelope Generator, the rise and fall times are controlled like the slew up/down times above, including the shape of the falling/rising slope of the envelope, the exp. CV input can be used to change both attack and decay simultaneously.
At the End output a pulse appears as the end of the envelope is reached (less than about 20mV), this can be used as a pulse delay.
If a series of triggers are applied to the VCS faster than the total rise and fall times, the module will divide the incoming signal by a whole number. In the audio range the output will be the sub-harmonic series.
- VCLFO / VCO:
Cycle switch = on, no trigger signal applied to Trig socket, no input signal: Voltage controlled LFO/VCO, the rise and fall times of the waveform are controlled like the slew up/down times above, including the shape of the falling/rising slope
the exp. CV input can be used like the CV input of a VCO or VCLFO, the response is exponential but not exactly 1V/oct.
Notes: A-135-2 is a miniature version of the A-135-1. Behind a front panel with 8 HP only four linear VCAs (voltage controlled amplifiers) and a voltage controlled mixer based on the VCAs are available.
Controls, In/Outputs and Functions of each VCA:
- Level (manual control of the VCA amplification), small rubberized knob (L1...L4)
- Control voltage input with associated attenuator (CV1...CV4), for the full VCA control range about 0...+5V control voltage are required (attenuator fully clockwise), for higher control voltages the attenuator is used, the attenuators are without knobs, just plastic shafts with white marker
- Signal Input
- Signal Output
- All inputs and outputs are DC coupled. Consequently the VCAs can be used to process both audio and control voltages (e.g. to control the level of LFOs or envelopes)
- The signal input is not equipped with an attenuator. But the VCAs can process all signals up to 15Vpp / -7.5...+7.5V without clipping. In case of higher levels an external attenuator is required (e.g. A-183-1).
- The available amplification range is 0...1, the maximal amplification is 1 (i.e. it "clips" and remains at 1 even if the control voltage goes beyond the value that corresponds to amplification 1)
Functions of the voltage controlled mixers:
- Two outputs ("Selected" and "All")
- Selected output: the ouput if a VCA is removed from this sum signal when a plug is inserted into the corresponding VCA output.
- All output: sum of all VCA outputs, regardless of inserted plugs into the VCA outputs
- The maximal amplification is about 0.6 to avoid clipping at the mixer outputs (otherwise the outputs may distort with 15Vpp signals at each signal input and full amplifications)
Special functions of the voltage controlled mixers (selectable by internal jumpers):
- Dual Stereo VCA: In this case the control unit of VCA1 (L1 + CV1) affects also VCA3 and the control unit of VCA2 (L2 + CV2) affects also VCA4, the control units of VCA2 and VCA4 are out of operation
- Quad VCA: In this case the control unit of VCA1 (L1 + CV1) affects all four VCAs. The control units of VCA2, VCA3 and VCA4 are out of operation. In this mode the module has the same function as module A-132-2. That's why module A-132-2 will be discontinued.
- Normalling of the signal inputs: by means of internal jumpers signal input 1 can be normalled to signal input 2, signal input 2 to signal input 3 and signal input 3 to signal input In 4. That way the same input signal can be distributed to four different channels by means of control voltages (e.g. quadrophonic distribution of audio signals). Suitable control voltage sources are e.g. A-144 (Morphing Controller) or A-143-9 (Quadrature LFO).
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.
Notes: Arp is a gate-driven arpeggiator with a multitude of chord types and playback modes. Voltage control over both root note and chord type allow for sequencing any combination of chords in any key imaginable.
With the rate of the arpeggio and reset capability in your own hands, you're free to create dynamic rhythmic melodies from your favourite chords. Take your tonality for a ride with Arp.
Notes: Kick is a bass drum synthesizer with a dramatic timbral range. Its flexible synthesis engine ranges from 808 to IDM with its punchy kicks and smooth distorted tones. 1V/Octave tracking across five octaves allows for tonal sequencing of the entire frequency range. Drop a beat with Kick.
Dual channel stepped voltage source and adder synth module - 6HP wide
Notes: 'Beast's Chalkboard' is dual channel stepped voltage source and adder for your eurorack modular synthesizer system. It primarily is intended as a dual octave switcher for VCO's but has many other uses including sequence transposition, FM ratio creation, buffered CV distribution and VCO calibration.
Supply: +/-12V (Reverse voltage & polyfuse protection)
Current Draw: ~30ma
Size: 6 HP
Depth: 22mm (including power header)
Offset Error: +/- 10mV
Notes: Row Power is a clean, regulated, and protected power solution for eurorack systems. Row Power 35 provides 35W of power, suited for any typical eurorack row (84HP to 168HP):
+12V @ 1.4A
-12V @ 1.25A
+5V @ 1.0A
Simply plug a universal power supply (laptop style) into either of the barrel plugs on the 4HP panel. Connect your modules via flying-bus cables or the Bus Stick.
Daisy-chain multiple Row Powers to use a single power brick for multiple rows (typically 3-5 rows per power brick). Each row will be independently regulated and protected for ultra-low cross-talk between rows. Rows can also be hot-swapped (plugged/unplugged without powering the whole system down).
Utility module to convert signals to Eurorack level - 6HP
Notes: The Listen IO is a simple module which gets signals in and out of a Eurorack system by converting to and from normal modular levels. The top section converts any external signal to modular levels by providing up to 30x gain (+30dB), allowing you to use table-top synthesizers, keyboards, phones/tablets, computers, toys, microphones, etc. in your patches. The bottom section does the opposite: modular signals are converted to normal line level signals. The bottom two jacks can be used as line outs or as headphone jacks, so you and a friend can listen in stereo at the same time.
Each section has two inputs and outputs for use with a stereo signal or two mono signals. An LED bar graph for each output shows the signal level and clipping.
8 great sounding custom stereo effects in just 3HP
Notes: Pico DSP is a small brother of the popular stereo effects processor Black Hole DSP. It contains eight algorithms, in detail four delays, two types of reverb, Leslie speaker emulation and an Overdrive/Bitcrusher. Each effect is editable in two parameters. One of them can be modulated using the CV input. Pico DSP features clear, high-resolution sound. Alongside the established standards, it is also possible to generate lots of freaky special effects.
Notes: Erica Pico Voice is amazingly versatile sound source in just 3HP. It features 8 sound generation algorithms: Karplus Strong, Chords, Wavetable, TB303 bassline emulation, PWM, Supersaw, Wavefold and Harmonic saturation, with three adjustable parameters per algorithm and CV control over one user defined parameter. Despite the small size, Pico Voice sounds bigger than it is!
Notes: SL3KT (pronounced "Select") is a simple three-channel switch module for Eurorack Modular Synthesizers.
Three independent, two-way switches allow for users two select between different sources or destinations of both CV and Audio Signals. Useful for many tasks in a Eurorack system such as sequence selecting, CV selecting, boolean logic operations, group switching, group routing, gating, waveform mixing, and so much more!
Notes: Stereo effects processing for Tangible's affordable AE modular system. Offers a total of 15 digital effect programs with CV control over three parameters each. Can run in Eurorack via an optional adaptor frame.
The MULTIFX module offers 15 different stereo audio FX programs, a wide variety from common FX like reverb and delay to unique effects like Ring Crusher or Glitch delay. Also a nice shimmer effect is onboard.
Each program has 3 parameters that can be adjusted and additionally be CV-controlled.
With a switch the sample rate can be reduced to half the normal rate, resulting in doubling the effect times (with reverb, delay...) and introducing a nice portion of aliasing.
It is based on the FV-1 DSP chip that is well-known from other FX-modules in the Eurorack world; the MULTIFX module offers the 7 factory programs of the chip plus 8 new and unique ones created by Tangible Waves.
Hands-on signal switching and routing solution - 8HP
Notes: Designed with and for performing artists, Switch 4 delivers a hands-on signal switching and routing solution for your Eurorack modular synthesiser.
Quickly mute audio signals, trigger envelopes live, select modulation sources on the fly... With custom dual-action toggle switches, an intuitive interface and sturdy construction, Switch 4 will prove just as useful on stage as in the studio.
The bottom switching section includes four lever-actuated toggle switches, to make or break the signal path between the inputs and outputs. These switches feature a dual action: latched upwards, momentary downwards.
The four input signals are also sent to the top routing section, where two rotary switches allow you to select the signals to be sent to the matching outputs. Here you'll also find dual-action toggle switches, for added versatility.
Finally, all signal paths are buffered, avoiding signal cuts when shorting a jack during patching or severe loading effects when driving many inputs. The high-end components provide exceptionally low noise and distortion, so Switch 4 can reliably process audio, control voltages and gates/triggers.
Two precision analogue CV processors with input selection, voltage hold and gated polariser functionalities
Notes: A 'Swiss Army knife' for your modular system, Select 2 provides two highly accurate gate-controlled voltage processors in 6 HP. These allow you to create, switch, mute, hold, invert, attenuate, offset, add/mix and subtract voltages, from slow control voltages (CV) up to audio frequencies.
Each processor features two signal inputs, with the left input used by default. A gate on the 'select' input switches to the right signal input instead. The signal inputs are normalised to the precision +5 V reference (left) and 0 V (right).
Following the input section is a hold circuit. A rising edge on the 'hold' input freezes the input voltage at that moment, until the gate input goes low again. While most sample/track-and-hold modules only manage a few seconds, Select 2’s 'low droop' design enables it to store a held voltage accurately for several minutes.
The end of the signal path consists of a gated polariser/attenuverter. Using the knob, the voltage at the output can attenuated and/or inverted: the gain is -1 (inverted) at the minimum setting, 0 at the centre and +1 (unity gain) at the maximum. The polariser can be disabled using the 'unity' gate input. This unique ability enables a variety of interesting gate-controlled signal modulations. Dual-colour LEDs show the output voltage of each processor.
Finally, if the A output socket is left unused, the signal is mixed together with the B output. This enables signal offsetting, CV mixing, pitch transposing etc.
Eurorack multi-waveform syncable Low Frequency Oscillator (LFO) module based on Electric Druid TAPLFO2D family of code - 4HP wide
Notes: Wave Runner LFO:
Wave Runner is a multi-waveform sync-able LFO based on the Electric Druid TAPLFO2D family of code, but with some significant additions and improvements. The TAPLFO2D-FC PIC and code is exclusive to Frequency Central and was developed specifically for the Wave Runner, and is not compatible with similar modules.
- sample and hold
- stepped triangle/sawtooth/ramp
All waveforms can be skewed using the Distort knob, as well as control over pulse width of square, and distortion of the cyclic waveforms, this get you control over Noise freq as well as bitcrushing, bitcrush of S/H down to 1 bit for random triggers.
Tap sync input, for syncing to whatever. Wave Runner measures the last two incoming pulses and syncs itself to these. Multiply knob allows for Wave Runner to run at x0.5, x1, x1.5, x2, x3 and x4 of the incoming sync pulse. Freq is from stupid slow (0.025Hz) into low audio range (50Hz).
The latest version also features Level CV input to control the absolute output level of the LFO.
Notes: Introducing the BD808, part of our new series of drum modules that brings analog percussion into the modular synth world, instantly turning your system into a self-contained music machine. Its small size, minimalist design, and modern production methods have allowed us to bring the world's most famous bass drum sound generator back at a very low cost. The real thing is here again.
The BD808 is the Roland TR-808's Bass Drum circuit adapted for use in Eurorack format and tuned to sound like a machine that comes fresh off the original 80's assembly line. The adaptation to modular format has allowed us to add some special features like independent Accent levels, a high-powered gain stage, dual-input pulse-shaper, and extended decay - all without compromising the signature sound of the TR-808.
A widely used technique with TR-808 machines is to run the drum sounds through outboard amplifiers to add gain and then pass the sound through just about anything to generate additional harmonics caused by clipping and distortion. In the BD808, we have already included this high-powered output gain stage capable of producing signals up to 20Vpp, extending from the original palette of sounds and allowing you to get an assorted array of harmonized bass drums ranging from sharp attacks to crushed tones using this simple yet effective technique! On the inputs, we have also designed a dual pulse-shaper circuit so you can trigger your BD808 with Trigger/Gate signals from step sequencers, clock dividers, or any other pulse/clock sources. This saves you the need to shape the pulses sent to the module and ensuring the same stable sound at its peak power, regardless of differences in your pulse source.
All these little, but unique, features make integrating this legendary sound generator into your modular easy, unleashing the power of real analog drums and making those speaker cones shake.