User Manual

OB-6 Operation Manual

Oscillators

Oscillators provide the raw building blocks of the OB-6’s sound by

producing waveforms, each of which has its own inherent sound charac-

ter based on its harmonic content. The OB-6 has two oscillators, plus a

sub oscillator and a noise generator per voice. Level controls for each of

these are located in the Mixer section.

Oscillator 1 is capable of generating sawtooth, and variable-width pulse

waves. Oscillator 2 generates triangle, sawtooth, and variable-width

pulse waves. These waveshapes are continuously variable and smoothly

transition from one shape to the next as you turn the

shape knob. This

provides a variety of “in-between” waveshapes.

The oscillators on the OB-6 are extremely stable. To emulate the random pitch

drift and oscillator instability of vintage instruments, use the

detune parameter (next to

the

unison button) to dial in as little or as much drift as you like.

SYNC

PULSE WIDTH

LOW FREQ

KEYBOARD

FREQUENCY

PULSE WIDTH

FREQUENCY DETUNE

VCO 1 VCO 2

OSCILLATORS

Oscillators 1 and 2

Oscillator 1 can be hard-synced to Oscillator 2 for complex, harmoni-

cally-rich sounds when modulated.

Oscillator 2 features a

detune knob for detuning and thickening sounds,

a low freq switch that allows it to function as an LFO for modulation

purposes, and a keyboard switch that disables keyboard control over its

pitch (useful when used as an LFO, or for drones and other effects).