Four of the outputs are switchable between sine and square LFOs. Their frequencies are jointly set by the Speed and Spread knobs, which control the base speed and the speed difference between the outputs, respectively. Both controls also have CV inputs. These four outputs can also be switched between bipolar (±5V) and unipolar (10V positive or negative), and can be reset to the start of their cycle via the Reset input.

A fifth output offers another, independent, sine LFO with its own speed knob.

The module is 100% analogue.

Specifications

• Width: 8hp
• Depth: 42mm
• Power: +12v 82mA / -12v 80mA

Manufacturer product page here.
Product manual here.

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The effect is essentially one of adding an octave on top of the input note, but this only really applies to pure input tones – for more complex tones, the sound is changed in all sorts of interesting ways. This is combined with the possibility of overdriving the sound for even more edge, while the unique ‘Centre’ control adds asymmetrical clipping.

As a bonus feature, Cicely also includes an envelope follower. The module is 100% analogue.

Specifications
Width: 8hp
Depth: 37mm
Power: +51mA, -43mA

The post Expert Sleepers Cicely Eurorack Analog Octave Fuzz Module appeared first on Elevator Sound.

The shape of the attack and decay sections can be independently and continuously adjusted from exponential, through linear, to logarithmic.

The module is constructed entirely from analogue parts and discrete logic. There is no microcontroller or digital-to-analogue conversion involved and therefore no quantization of voltage levels or of the response time.

Features

• a rich oscillator with 5+ octaves of temperature-compensated V/O and CV over skew
• a quadrature sine wave oscillator
• Cutoff CV attenuverter
• Adjustable post-filter overdrive circuit
• Filter coupler connector

Specifications

• Width: 8hp
• Depth: 42mm
• Power: +43mA / -25mA

Manufacturer product page here.
Product manual here.

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CV control of all envelope times and of the break level is provided. The envelope can be set to auto-trigger, turning it into a complex voltage-controlled LFO.

The shape of the attack and decay/release sections can be independently and continuously adjusted from exponential, through linear, to logarithmic.

Amelia was developed with use with sequencers particularly in mind, where often you only have a trigger output, not a gate of adjustable length. It allows you to create complex, fexible, and modulate-able envelope shapes from that simple trigger signal.

The module is constructed entirely from analogue parts and discrete logic. There is no microcontroller or digital-to-analogue conversion involved (and so no quantization of voltage levels or of response time).

Specifications

• Width: 8hp
• Depth: 42mm
• Power: +33mA / -33mA

Manufacturer product page here.

The post Expert Sleepers Amelia Eurorack ADSR Envelope Generator Module appeared first on Elevator Sound.

Voltage control is provided over the two sides of the filter, the gain, and the filter feedback.

A wet/dry mixer is provided, also under voltage control.

A range switch is provided to drop the filter response several octaves, at which point it becomes capable of synthesizing percussion sounds when fed trigger pulses.

The module is 100% analogue.

Specifications

• Width: 8hp
• Depth: 42mm
• Power: +69mA / -58mA

Manufacturer product page here.
Product manual here.

The post Expert Sleepers Pandora Eurorack Bandpass VC Filter Module appeared first on Elevator Sound.

Its two independent MIDI ports can be used with any MIDI device via 5 pin DIN or TRS 3.5mm jack breakouts, or connected directly to other Expert Sleepers modules via their MIDI breakout headers.

Compatible Expert Sleepers modules include the disting mk4, FH-2 and ES-9 (MIDI only) and the disting EX (MIDI and I2C). Compatible breakouts include the MIDI Breakout and the Tiny MIDI Breakout.

The CVM-8 also sends on the Select Bus, so no wiring is required to drive, for example, the disting EX.

A number of standard configurations can be selected using DIP switches on the PCB. Full configuration and firmware update is possible via a browser-based tool.

As an added bonus, the module provides I2C-to-MIDI functionality.

Features

• Input voltage range: ±10.24V
• ADC conversion: 16 bit
• Two complete MIDI ports (in/out/through) for 5-pin DIN or TRS MIDI (via a compatible breakouts) or for direct connection to other Expert Sleepers modules
• One header for an I2C bus connection to compatible devices
• Connection to the Select Bus (as leader)

Specifications
Width: 4hp
Depth: 46mm
Power +66mA, -25mA

Manufacturer product page here.
Product manual here.

The post Expert Sleepers CVM-8 Eurorack CV to MIDI / I2C Converter Module appeared first on Elevator Sound.

It can also be used with modules from other manufacturers e.g. the Michigan Synth Works F8R.

The six sockets can be shared amongst modules as needed. The module is entirely passive, and can be wired up for Type A or Type B 3.5mm MIDI.

The Tiny MIDI breakout’s specifications are as follows:
Panel width: 2HP
Module depth: 30mm (including cables)
Current draw: none

In The Box
The module
Two M3x6mm screws
One four-way ribbon cable

The cable colours may vary from those shown below. The cable may be split into two two-way cables if desired. Extra cables are readily available from e.g. Adafruit, Amazon, Mouser etc. Search for “DuPont cables” or “jumper wires”.

Panel width: 2HP
Module depth: 30mm (including cables)
Current draw: none

The post Expert Sleepers Tiny Midi Breakout (TMB) Eurorack Module appeared first on Elevator Sound.

The module has three waveform outputs, all affected by the same waveshaping controls (a front panel knob and a CV input). The first offers a variable pulse width square wave. The remaining two offer waveforms based on quadrature (i.e. 90 degrees out of phase) sine waves. The waveshape control progressively turns the first sine output into a triangle-like waveform; the second sine output becomes a saw-like waveform.

The cross-modulation input is somewhat like the sync input found on more conventional VCOs, but it has more nuances of operation allowing for a wider choice of sounds.

Tech Specs:

• Panel width: 8HP
• Module depth: 42mm
• Current draw: 55mA on the +12V rail, 54mA on the -12V rail

Product manual here.

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Persephone also includes a zero-crossing detector, which can be used to restrict gain changes to zeros in the audio waveform, preventing clicks and pops that can occur with very fast envelopes, especially on lower pitched sounds. In fact, with the zero-crossing circuit engaged, you can use a simple gate as the CV input without clicks.

Specifications

• Panel width: 8HP
• Module depth: 37mm
• Current draw: 33mA on the +12V rail, 26mA on the -12V rail

Product manual here.

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The module has two audio inputs, one with an attenuator, so it will also mix two signals at the filter input.

Tech Specs:

• Panel width: 8HP
• Module depth: 37mm
• Current draw: 22mA on the +12V rail, 18mA on the -12V rail

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