Behringer 110 VCO/VCF/VCA

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Quick Start Guide

110 VCO/VCF/VCA

Legendary Analog VCO/VCF/VCA

Module for Eurorack

Controls

(1) PW MOD – Accepts a voltage from another module

to control the pulse width. When a jack is inserted the

MOD MANUAL control acts as a MOD input level control.

(2) VCO OUT – Send the VCO signal to another source via

3.5 mm TS cable.

(3) WAVEFORM – Select triangle, sawtooth or pulse

waveforms for the VCO.

(4) MOD MANUAL – Sets the ratio between the upper and

lower portions of the pulse wave.

(5) RES – Boosts the resonance frequencies selected with the

CUTOFF FREQ slider, potentially causing VCF oscillation.

(6) CUTOFF FREQ – Adjusts the cuto frequency of the

low-pass lter.

(7) RANGE – Sets the pitch range of the VCO in octave steps.

(8) PITCH – Fine tunes the pitch.

(9) VCF/VCA SIG IN – Connect incoming signals via 3.5 mm

TS cables.

(10) SIG LEVEL – Adjust the level of the signals connected to

the inputs.

(11) VCA OUT – Sends the VCA signal via 3.5 mm TS cable with

either high or low signal levels.

(12) INITIAL GAIN – Adjusts the initial gain level when there is

no control voltage present. The adjacent LEDs will light to

indicate signal (green) and overload (red).

(13) MOD LEVEL – Adjusts the level of the signal connected to

the associated MOD IN jack.

(14) MOD IN – Accepts voltages that control or modulate the

VCO, VCF or VCA.

Power Connection

The module comes with the required power cable for connecting

to a standard Eurorack power supply system. Follow these

steps to connect power to the module. It is easier to make

these connections before the module has been mounted into

a rack case.

1. Turn the power supply or rack case power o and

disconnect the power cable.

2. Insert the 16-pin connector on the power cable into the

socket on the power supply or rack case. The connector has

a tab that will align with the gap in the socket, so it cannot

be inserted incorrectly. If the power supply does not have

a keyed socket, be sure to orient pin 1 (-12 V) with the red

stripe on the cable.

3. Insert the 10-pin connector into the socket on the back of

the module. The connector has a tab that will align with the

socket for correct orientation.

4. After both ends of the power cable have been securely

attached, you may mount the module in a case and turn on

the power supply.

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V 1.0

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Summary

Module Controls Overview

VCO Output and Tuning

Manages VCO signal output, pitch range selection, and fine-tuning adjustments.

VCF Cutoff and Resonance

Adjusts the low-pass filter cutoff frequency and boosts resonance for oscillation.

VCA Operation and Modulation Inputs

Controls VCA output level, pulse width, waveform, and accepts external modulation signals.

Signal Input and Output Management

Handles signal inputs, VCA output, and initial gain adjustment for signal levels.

Power Connection Guide

Connecting the Power Cable

Step-by-step instructions for connecting the module's power cable to the power supply.

Module Installation

Mounting in Eurorack Case

Guidance on physically mounting the module into a Eurorack enclosure using screws and rails.

Module Specifications

Input Characteristics

Details on types, impedance, and maximum levels for various input signal types.

Output Characteristics

Technical specifications for VCO and VCA output signals, including impedance and levels.

Control Parameters

Specifications for manual control ranges, frequencies, and input level adjustments.

Power and Physical Dimensions

Information on power supply requirements, current draw, and physical module dimensions.

Summary

Module Controls Overview

VCO Output and Tuning

Manages VCO signal output, pitch range selection, and fine-tuning adjustments.

VCF Cutoff and Resonance

Adjusts the low-pass filter cutoff frequency and boosts resonance for oscillation.

VCA Operation and Modulation Inputs

Controls VCA output level, pulse width, waveform, and accepts external modulation signals.

Signal Input and Output Management

Handles signal inputs, VCA output, and initial gain adjustment for signal levels.

Power Connection Guide

Connecting the Power Cable

Step-by-step instructions for connecting the module's power cable to the power supply.

Module Installation

Mounting in Eurorack Case

Guidance on physically mounting the module into a Eurorack enclosure using screws and rails.

Module Specifications

Input Characteristics

Details on types, impedance, and maximum levels for various input signal types.

Output Characteristics

Technical specifications for VCO and VCA output signals, including impedance and levels.

Control Parameters

Specifications for manual control ranges, frequencies, and input level adjustments.

Power and Physical Dimensions

Information on power supply requirements, current draw, and physical module dimensions.

The Behringer 110 VCO/VCF/VCA is a legendary analog module designed for Eurorack systems, combining a Voltage Controlled Oscillator (VCO), Voltage Controlled Filter (VCF), and Voltage Controlled Amplifier (VCA) in a single unit. This module offers a comprehensive set of controls and connectivity for sound synthesis, making it a versatile addition to any modular setup.

Function Description

The module integrates three core components of subtractive synthesis:

Voltage Controlled Oscillator (VCO): Generates various waveforms (triangle, sawtooth, pulse) with adjustable pitch and pulse width. It can be modulated by external control voltages for dynamic sound creation.
Voltage Controlled Filter (VCF): A low-pass filter that shapes the timbre of the sound by adjusting its cutoff frequency and resonance. It can also be modulated by external control voltages.
Voltage Controlled Amplifier (VCA): Controls the amplitude (volume) of the sound, allowing for dynamic expression and envelope shaping. It features initial gain adjustment and can be modulated by external control voltages.

Important Technical Specifications

Inputs:

Pulse Width Mod (PW MOD):
- Type: 3.5 mm TS jack, DC coupled
- Impedance: >70 kΩ, unbalanced
- Maximum input level: 0 V to +10 V, 4% per volt
Signal Input (VCF/VCA SIG IN):
- Type: 4 x 3.5 mm TS jacks, AC coupled
- Impedance: >50 kΩ, unbalanced
- Max input level: +17 dBu @ unity gain
VCO Mod Input (MOD IN):
- Type: 2 x 3.5 mm TS jacks, summed
- Impedance: >50 kΩ, unbalanced
- CV range: 0 V to +10 V, 1 V/oct
VCF Mod Input (MOD IN):
- Type: 2 x 3.5 mm TS jacks, summed
- Impedance: >50 kΩ, unbalanced
- CV range: 0 V to +10 V, 1 V/oct
VCA Mod Input (MOD IN):
- Type: 2 x 3.5 mm TS jacks, summed
- Impedance: >50 kΩ, unbalanced
- CV range: 0 V to +10 V, typically 1 V per 10 dB

Outputs:

VCO Output (VCO OUT):
- Type: 3.5 mm TS jack, DC coupled
- Impedance: 1 kΩ, unbalanced
- Max output level: 10 V p-p
- Frequency range with no external CV: <10 Hz to 500 Hz
- Frequency range using external CV: <1 Hz to 30 kHz
VCA Output (VCA OUT):
- Type: 2 x 3.5 mm TS jacks, AC coupled
- High impedance: 1 kΩ, unbalanced
- Low impedance: 3 kΩ, unbalanced
- High max output level: +18 dBu
- Low max output level: -2 dBu
- High output noise: <-60 dBu, 22 Hz -22 kHz
- Low output noise: <-80 dBu, 22 Hz -22 kHz

Controls:

Pulse Width Manual: 50% to min
Waveform: Triangle, sawtooth, pulse
Range: 32', 16', 8', 4', 2' (octave steps)
Pitch: 2 octave range
Cutoff Frequency: 20 Hz to 20 kHz
Resonance: Off to self oscillation
Sig In Level: -∞ to unity gain
Mod In Level: -∞ to unity gain
VCA Initial Gain: -∞ to unity gain

Power:

Power supply: Eurorack
Current draw: 80 mA (+12 V), 50 mA (-12 V)

Physical:

Dimensions: 81 x 129 x 46 mm (3.2 x 5.1 x 1.8")
Rack units: 16 HP
Weight: 0.19 kg (0.42 lbs)

Usage Features

The Behringer 110 offers a highly interactive and flexible user experience through its array of controls and patch points:

PW MOD (Pulse Width Modulation): This jack accepts a voltage from another module to control the pulse width of the VCO's pulse waveform. When a jack is inserted, the MOD MANUAL control acts as a MOD input level control, allowing for dynamic timbral changes.
VCO OUT: Sends the VCO signal to another source via a 3.5 mm TS cable, enabling complex signal routing within a modular system.
WAVEFORM: A switch to select between triangle, sawtooth, or pulse waveforms for the VCO, providing fundamental sonic building blocks.
MOD MANUAL: This control sets the ratio between the upper and lower portions of the pulse wave, allowing for manual adjustment of the pulse width when no external modulation is applied.
RES (Resonance): Boosts the resonance frequencies selected with the CUTOFF FREQ slider. Pushing the resonance too high can lead to VCF oscillation, creating self-generating tones.
CUTOFF FREQ (Cutoff Frequency): Adjusts the cutoff frequency of the low-pass filter, allowing users to shape the brightness and character of the sound.
RANGE: Sets the pitch range of the VCO in octave steps (32', 16', 8', 4', 2'), providing broad control over the oscillator's fundamental frequency.
PITCH: A fine-tuning control for the VCO's pitch, allowing for precise adjustment within the selected octave range.
VCF/VCA SIG IN: Connects incoming signals via 3.5 mm TS cables to the VCF and VCA sections for processing. This allows external audio or other module outputs to be filtered and amplified.
SIG LEVEL: Adjusts the level of the signals connected to the VCF/VCA inputs, ensuring proper gain staging.
VCA OUT: Sends the VCA signal via a 3.5 mm TS cable with either high or low signal levels, offering flexibility for subsequent modules in the signal chain.
INITIAL GAIN: Adjusts the initial gain level of the VCA when no control voltage is present. Adjacent LEDs indicate signal (green) and overload (red), helping users monitor and prevent clipping.
MOD LEVEL: Adjusts the level of the signal connected to the associated MOD IN jack for VCO, VCF, or VCA, providing precise control over modulation depth.
MOD IN: Accepts voltages that control or modulate the VCO, VCF, or VCA, enabling dynamic and expressive sound design through external control sources like LFOs, envelopes, or sequencers.

Power Connection:

The module comes with a power cable for connecting to a standard Eurorack power supply system. The connection process is straightforward:

Turn off the power supply or rack case and disconnect the power cable.
Insert the 16-pin connector on the power cable into the socket on the power supply or rack case. The connector is keyed to prevent incorrect insertion. If the power supply lacks a keyed socket, ensure pin 1 (-12 V) aligns with the red stripe on the cable.
Insert the 10-pin connector into the socket on the back of the module. This connector is also keyed for correct orientation.
Once both ends of the power cable are securely attached, the module can be mounted in a case, and the power supply can be turned on.

Maintenance Features

Installation: The module includes necessary screws for mounting in a Eurorack case. It's recommended to connect the power cable before mounting. The design accommodates various Eurorack rail types, including those with fixed holes or sliding threaded plates, allowing for precise alignment during installation.
Durability: Built to Eurorack standards, the module is designed for robust performance within a modular synthesis environment.
Warranty: Music Tribe provides a limited warranty for its products. Users can find detailed terms and conditions, along with additional information, on the musictribe.com/warranty website.

The Behringer 110 VCO/VCF/VCA is a powerful and compact module that brings essential analog synthesis capabilities to any Eurorack setup, offering a wide range of sound design possibilities from classic analog tones to complex modulated textures.