User Manual
37
OB-6 Operation Manual
X-Mod
X-Mod modulation sources:
• Filter envelope
• VCO 2 frequency
X-Mod modulation destinations:
• VCO 1 frequency
• VCO 1 waveshape
• VCO 1 pulse width
• Filter cutoff frequency
• Normal to Bandpass lter mode
• Filter mode (Low-Pass, Notch, High-Pass)
You can control how much the source affects the destination by dialing
in a specic modulation amount with the
filter env or vco 2 knobs.
Modulation amount can either be positive or negative.
Use X-Mod to create complex harmonic effects ranging from FM
(frequency modulation) to audio-rate lter modulation and beyond. Many
classic sounds on the original Oberheim OB-series of synthesizers were
created through clever use of X-Mod.
X-Mod Parameters
Filter Env: Selects the amount of modulation from the Filter Envelope
that is applied to a selected destination. Modulation amount can be either
positive or negative.
VCO 2: Selects the amount of modulation from Oscillator 2 that is
applied to a selected destination. Modulation amount can be either posi-
tive or negative.
When using vco 2 as a modulation source, the modulation character is
affected by the waveshape currently chosen for Oscillator 2 (triangle, sawtooth, or
square/pulse). Try setting Oscillator 2 to low frequency (using the
low freq switch) to
further increase modulation possibilities.