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Behringer System 15 Complete Eurorack Modular Synthesizer

Complete Eurorack Modular Synthesizer with 16 Modules, MIDI-to-CV Converter, and Eurorack Go Case

Authentic Eurorack Reproduction of a Mid-sized Modular Monster

A historically accurate interpretation of a legendary 1970s modular synth, the Behringer System 15 is teeming with vintage vibe. With 16 discrete all-analog modules, this power-packed Eurorack system has everything you need to craft authentic old-school synth tones. It features a staggering collection of oscillators, filters, amplifiers, and noise sources — plus all the necessary utilities. On top of that, it’s housed in a Behringer Eurorack Go Case, and it includes enough built-in power to supply the whole system with some juice to spare! With the Behringer System 15, it’s now possible for vintage modular synth lovers — which includes many of us at Sweetwater — to live out their wildest electronic dreams, with the additional perk of integrating these iconic tones with modern Eurorack devices!

1 x 914 Fixed Filter Bank

The 914 fixed filter bank gives you unprecedented control over the timbre and resonance of your synthesized sound creations. The Behringer 914 is loaded with 12 active bandpass filters — ranging from 125Hz to 5.6kHz — and 24dB/octave highpass and lowpass filters. Not simply an EQ, the Behringer 914 has a characteristic sound that adds harmonic richness to any signal.

1 x 923 Analog Dual Filter

The 923 analog dual VCF delivers lush filtering with just enough grit to add massive character to your Eurorack-system oscillators and other audio signals. The 923 comprises a separate highpass and lowpass filter with independent I/O, along with a pink noise generator and white noise generator. Route two discrete signals into each filter to build dense, complex synth tones, or chain the two filters in series for bandpass-like effects and unique soundscaping.

1 x 904A Voltage-controlled Lowpass Filter

The Behringer 904A VCF is a self-oscillating resonant lowpass filter brimming with a thick and gritty vintage character. The 904A’s two primary controls — fixed control voltage and regeneration — carry the names found on the original unit, but, in modern parlance, they translate to filter cutoff and resonance, respectively. And they behave exactly as you would expect, with the unmistakable sound that has cemented its place in synthesis history. A frequency range knob lets you select from three frequency cutoff bands: position one spans from 1Hz to 5kHz, position 2 is 4Hz to 20kHz, and position 3 is 16Hz to 80kHz — giving you have ample control over your filter sweeps. The 904A is equipped with a signal input and output. It also includes three CV control inputs for manipulating the fixed control voltage, which are summed for creating dynamic movements from multiple LFOs or other modulation sources.

1 x 904B Voltage-controlled Highpass Filter

A point-to-point reproduction sized for Eurorack, the 904B Voltage-controlled highpass filter delivers the smooth frequency sweeping, gritty character, and squelching high end that made its predecessor highly coveted by vintage synth collectors. The module consists of two controls: filter control voltage and frequency range. Bearing its historically accurate name, the filter control voltage knob sets the filter’s cutoff point, and the 2-position Frequency Range selector lets you choose between a low (4Hz to 20kHz) band and a high (10Hz to 50kHz) band. Not only does the 904B remove low frequencies, but it also accentuates the high frequencies for ear-blistering leads that slice through a mix. The 904B is equipped with signal inputs and outputs and three summed control voltage inputs for blending modulators that affect the filter’s cutoff point.

2 x 902 Voltage Controlled Amplifiers

The 902 VCA module is the System 15’s workhorse voltage-controlled amplifier, with two signal inputs and two signal outputs for controlling audio signals or control voltages. Use it to generate brain-bending amplitude modulation, silky-smooth tremolo effects, and more.

2 x 911 Envelope Generators

The 911 envelope generator is a powerful sound-sculpting tool. Laid out in a standard ADSR configuration, the 911 envelope generator provides wide-ranging time intervals from 2ms up to 10 seconds, for tight snares and bursts, snappy pitched percussion sounds, epic stabs, and long, liquid drones. When building a Eurorack synthesizer, having an excellent envelope generator is essential — and, with the Behringer System 15, you get two!

1 x 921A Oscillator Driver

The Behringer 921A oscillator driver works in conjunction with the Behringer 921B oscillator module. Using the 921A oscillator driver, you can alter the frequency of the 921B oscillator module according to semitones or octaves, selectable with a rocker switch. Additionally, the 921A outputs an adjustable rectangular waveform for pulse width modulation. The 921A is CV-controllable with two summed inputs each for frequency and pulse width, for wild moving modulations. And unlike the original 1970s unit, the 921A isn’t constrained to affecting one oscillator unit; Behringer has designed it to drive up to 12 parallel oscillators.

2 x 921B Voltage-controlled Oscillators

The Behringer 921B oscillator is filled with vintage bite and growl. This straightforward all-analog VCO simultaneously outputs sine, triangle, sawtooth, and square waveshapes, and it includes two CV inputs for pulse width modulation and AC-Coupled and DC-Coupled inputs for frequency modulation. Sync In with selectable weak and strong modes lets you slave the 921B to another oscillator for deep waveshape manipulation.

1 x 921 Voltage-controlled Oscillator

The Behringer 921 VCO generates massive, gritty tones with its six selectable waveforms that include sine, triangle, saw, inverted saw, square, and inverted square. Or you can switch it into sub-audio mode for use as an LFO. The 921’s frequency control lets you select between stepped octaves or semitones, allowing you to create pseudo-polyphony when paired with one or more additional oscillators. For ultra-thick sounds, the 921 features pulse width modulation with two separate CV inputs, and you can add a heaping helping of dirt by adjusting the module’s clamping point, a type of old-school clipper.

1 x CP3A-M Mixer

The CP3A-M mixer’s straightforward controls offer extensive flexibility for building complex patches and creating never-before-heard sounds. The CP3A-M contains four channel inputs with channel gain knobs, a master gain knob, two sets of outputs with negative and positive polarity, and two sets of multiples with four outputs each. All of this adds up to vast routing options that will blow open your System 15’s creative potential.

1 x CP35 Attenuator

The Behringer CP35 attenuators module massively expands the creative possibilities of your Eurorack system. This 26HP unit comprises four passive attenuators, eight multiples, and +6V/-6V reference voltage outputs. The attenuators have an attenuation range of infinity to unity gain, and they are normalized from left to right. So, you can use them as an additional bank of four multiples or break the chain by patching into input jacks two, three, or four. Multiples are split into two banks, each with one input and three outputs. The Behringer CP35 is able to pass audio and CV signals, allowing considerable flexibility for creating complex patches within your Eurorack system.

1 x 961 Interface

The 961 interface is a utility device that converts the vintage V-trigs to S-trigs for compatibility with other Behringer System 15 devices and third-party Eurorack modules. The 961 has 24 V-trig inputs split into two banks of two columns, marked A and B. It offers flexible control over input signal gain and the ability to manually set the length of time for a trigger’s “On” duration on column B inputs. With the 961 installed in your Eurorack, you get to enjoy the historically accurate character of the System 15, with easy integration with other Eurorack modules.

1 x CM1A MIDI to CV Converter

The CM1A is a high-quality 16-bit MIDI to CV converter that lets you control your System 35 with any MIDI keyboard, hardware sequencer, or your DAW. It includes traditional 5-pin din MIDI In and Thru ports and a USB-MIDI port. Plus, it allows you to switch between V-trig, S-trig, or use both simultaneously!

Behringer System 15 Complete Eurorack Modular Synthesizer Features:

Authentic reproduction of a legendary complete modular synth system
Features 16 all-analog Eurorack modules built to vintage spec
Comes pre-installed in a Eurorack Go case with PSU
MIDI-to-CV converter allows you to control the system with any MIDI controller, hardware sequencer, or DAW
96HP of space for additional Eurorack modules, includes 1 x BP28 blank panel and 1 x BP12 blank panel

Specification	Detail
Type	Modular Synthesizer System
Analog/Digital	Analog
Oscillators	2 x 921B VCO, 1 x 921 VCO
Waveforms	Sawtooth, Inverted Sawtooth, Sine, Triangle, Square, Inverted Square, PWM
Filter	1 x 914 Fixed Filter Bank, 1 x 923 Analog Dual Filter, 1 x 904A Voltage-controlled Lowpass, 1 x 904B Voltage-controlled Highpass
Envelope Generator	2 x 911 EG (attack, decay, sustain, release)
Expansion	1 x HP56, 1 x HP28, 1 x HP12 blank panel expansion slots
MIDI I/O	In/Thru/USB
Other I/O	156 x Patch Points
USB	1 x Type B
Power Supply	13V DC power supply (included)
HP Size	2 x 140HP
Height	4.4"
Width	28.5"
Depth	12.2"

RETURN INFORMATION

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