Behringer 921 VOLTAGE CONTROLLED OSCILLATOR Quick Start Guide

Quick Start Guide

921 VOLTAGE

CONTROLLED OSCILLATOR

Legendary Analog VCO Module

for Eurorack

Controls

(4)

(5)

(6)

(3)

(8)

(7)

(2)

(9)

(10)

(11)

(1)

(13)

(12)

(1)

FREQUENCY

– Use this knob to set the oscillator frequency.

The frequency settings for this knob are controlled by the

COARSE RNG and SCALE toggle switches, as well as the

RANGE rotary switch.

(2)

RANGE

– This knob sets the general frequency range of the

oscillator in one-octave steps, which can then be adjusted

up or down with the FREQUENCY knob.

(3)

SCALE

– This switch controls whether the frequency knob

scale is ±6 octaves or ±12 semitones, which gives ﬁner

frequency control.

(4)

COARSE RNG

– This switch controls whether the oscillator

frequency functions in the audio range or in a lower

frequency range that extends below the audio threshold.

(5)

RECTANGULAR WIDTH

– Use this knob to set a default

width for the rectangular waveform. The width can then be

further controlled and varied by control voltages routed in

via the CNTRL IN jacks.

(6)

CNTRL IN

– These summed jacks allow control voltage and

modulation signals for the rectangular waveform to be

routed in via cables with 3.5 mm TS connectors.

(7)

CLAMPING POINT

– Use this knob to set the point at which

the oscillator waveform resets.

(8)

TRIG (V/S)

– These jacks allow control signals for the

clamping point to be routed in via cables with

3.5 mm TS connectors. The clamping point can be triggered

with a V-Trig (voltage trigger) signal via the

V jack, or a S-Trig (switch trigger) signal via the S jack.

(9)

AUX OUT WAVEFORM

– Use this knob to select a waveform

for the auxiliary output signal, including sine, triangular,

sawtooth, inverted sawtooth, square and inverted

square waveforms.

(10)

AUX OUT LEVEL

– Use this knob to adjust the output level

for the AUXILIARY OUTPUT jacks.

(11)

AUXILIARY OUTPUTS

– Use these jacks to route an auxiliary

waveform signal out of the module via cables with 3.5 mm

TS connectors.

(12)

FREQUENCY CONTROL INPUTS

– Use these summed jacks

to route control voltage and modulation signals into the

oscillator via cables with 3.5 mm connectors.

(13)

WAVEFORM OUTPUTS

– Use these jacks to route oscillator

signals out of the module via cables with

3.5 mm jacks. Four waveforms are available: sine, triangular,

sawtooth and rectangular.

Power Connection

The 921 VOLTAGE CONTROLLED OSCILLATOR 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 oﬀ 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.

Behringer 921 VOLTAGE CONTROLLED OSCILLATOR Quick Start Guide

Behringer 921 VOLTAGE CONTROLLED OSCILLATOR Manual

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