Moon Modular - 501D: Dual Voltage Controlled Oscillator Moog Unit MU 5U Synthesizers.Com Format

Manufacturer Description:

The M 501D DUAL OSCILLATOR MODULE combines two voltage controlled
oscillator circuits in one double-width unit. The two oscillator halves
enter a symbiosis in that they share some controls which affect both
while other functions are individual to each oscillator.

Each oscillator has its own octave range
switch (32’...2’ plus low frequency and wide
settings, ‘wide’ augmenting the range of the
tune pots to the whole 10-octave span of the
oscillators).

The master tune control on the left side
affects both vcos while the corresponding
pot on the right controls the detune interval
beween vco 1 and 2. Bipolar attenuators for
frequency and pulse width modulation with
their corresponding input jacks are separate
as are the two pulse width controls.

The central waveform selector controls both
wave outputs 1 and 2 while three additional
output jacks provide sine, sawtooth and
pulse waves of oscillator 2; the output area
is completed by a white noise source. More
individual wave outputs can be obtained by
adding the 501E expander module.

The seven control voltage inputs allow
control of frequency modulation and pulse
width modulation of vco 1 and 2. Two more
jacks control frequency (1V/oct) while the
central cv input jack controls both oscillators
at once.