Behringer 921A Oscillator Driver Module for Eurorack

BH #BE921AOSDRVR • MFR #921AOSCILLATORDRIVER
Behringer 921A Oscillator Driver Module for Eurorack
Key Features
  • Modular 55 and 35 Series Circuit Design
  • Control Up to 12 x 921B Osc Modules
  • Two Summed CV Frequency Control Inputs
  • Two Summed PWM CV Control Inputs
The Behringer 921A Oscillator Driver is a Eurorack-compatible oscillator-control module based on the authentic circuit designs from the Moog Modular System 55 and 35. The discrete circuitry of the Moog Modular System has a very distinctive sound and was used by artists like Keith Emerson, Stevie Wonder, Tangerine Dream, and many other pop, rock, and jazz musicians.
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Behringer 921A Oscillator Driver Module for Eurorack

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Behringer 921AOSCILLATORDRIVER Overview

The Behringer 921A Oscillator Driver is a Eurorack-compatible oscillator-control module based on the authentic circuit designs from the Moog Modular System 55 and 35. The discrete circuitry of the Moog Modular System has a very distinctive sound and was used by artists like Keith Emerson, Stevie Wonder, Tangerine Dream, and many other pop, rock, and jazz musicians.

The 921A Oscillator Driver features a frequency knob that can adjust between either octave or semitone frequencies and includes a rocker switch to select between the two types. The width of the pulse/square wave (PWM) is adjusted via a control knob that goes from 10 up to 90%.

Additionally, there are two 3.5mm frequency inputs and two 3.5mm width inputs that allow you to patch in modulation or other control voltage signals. Two high-current outputs for frequency and pulse width are able to drive up to twelve 921B modules for vast flexibility and nuanced waveforms. A ribbon power cable and screws are included.

  • Controls up to 12 parallel 921B Oscillator modules
  • Authentic reproduction of the circuitry from the Modular 55 and 35 Series
  • Artist roster includes world’s most famous pop, rock, and jazz musicians
  • Two summed CV inputs for frequency control
  • Two summed CV inputs for PWM
  • High current outputs for frequency and pulse width to drive up to twelve 921B modules
  • Switchable semitone/octave selector and manual pulse width control
  • 8 HP
  • Power: 15 mA +12 V, 15 mA -12 V
  • Includes power ribbon cable and mounting screws

Behringer 921AOSCILLATORDRIVER Specs

ControlsFrequency: 1 x Rotary Knob, ±6 Octaves / ±12 Semitone, Switchable
Switch: Semitone / Octave Rocker, ±1 VDC or ±6 VDC
Width of Rectangular Wave: 1 x Rotary Knob, <10 to >90%, 0 to +6 VDC
ConnectorsInputs
Frequency Control: 2 x 1/8" / 3.5 mm, Summed, 1 V/Oct
Rectangular Width Control: 2 x Summed 1" / 3.5 mm, 1 V/16%
Input Impedance: 100 Kilohms Unbalanced
Maximum Input Level: -10 VDC to +10 VDC

Outputs
Frequency Control: 1 x 1/8" / 3.5 mm, 1 V/Oct
Rectangular Width Control Output: 1 x 1/8" / 3.5 mm, 1 V/16%
Output Impedance: 10 Ohms Unbalanced
Maximum Output Level: -10 to +10 VDC
Drive Capability: 12 x 921B VCO Modules
PowerPower Supply: Eurorack
Current Draw: 25 mA (+12 V), 25 mA (-12 V)
Horizontal Pitch8 HP
Dimensions (W &#215; H &#215; D)1.6 x 5.1 x 1.4" / 4.0 x 13 x 3.5 cm
Weight0.2 lb / 0.1 kg
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