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V-ZERO is a monophonic guitar synthesizer that operates on the principles of subtractive synthesis. Upon playing a
note, the pedal detects the pitch and activates the on-board oscillators. The resulting signals can be mixed and
processed in various ways through filtering and the application of modulations.
Detailed description of every control
Oscillators:
OSC1 Waveform (4P rotary switch): Sine, Saw, Square, Triangle
OSC2 Waveform (4P rotary switch): Sine, Saw, PWM, Triangle
OSC1 Octave (6P rotary switch): 6 octaves range
OSC2 Octave (6P rotary switch): 6 octaves range
OSC 1-2 mix (pot): mixes OSC1 and OSC2
OSC 1 tune (pot): fine tunes OSC1 pitch
Mix and output:
Mix (pot) : mixes dry guitar signal with synthesizer signal
Volume (pot): output level
Output Jack: utilize a standard TS jack plug or TRS for output splitting. The TIP of the jack transmits both the
synthesizer and dry guitar signals, while the RING carries only the dry signal. The TIP signal is influenced by the
MIX and VOLUME controls and can be bypassed, whereas the RING signal remains unaffected by MIX or
VOLUME and cannot be bypassed. The split function enables the option to drive two distinct amplifiers or
route the signal to various external devices.
Modulation:
LFO rate: speed of the LFO
LFO depth: depth of the LFO
VCA mod:
short press: LFO modulates VCA
o
long press: instrument envelope modulates VCA
o
LPF mod:
short press: LFO modulates LPF
o
long press: instrument envelope modulates LPF
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Pressing CONTROL and LPF MOD together toggles "LPF frequency modulation from OSC2."
o
Pitch mod:
short press: LFO modulates pitch of both OSC1 and OSC2
o
long press: applies pitch portamento, portamento time can be set with the LFO rate pot
o
pressing CONTROL and PITCH MOD together toggles the LOW TRACKING FUNCTION
o
LFO Wave: when off the LFO wave is a sine wave, when on the LFO wave is a square wave
short press: toggles between Sine and Square waves
o
long press: turns on Sawtooth wave
o
V-Zero
Monophonic Guitar Synthesizer
www.opfxs.com
User Manual
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Summary of Contents for OPFXS V-Zero
- Page 1 User Manual V-ZERO is a monophonic guitar synthesizer that operates on the principles of subtractive synthesis. Upon playing a note, the pedal detects the pitch and activates the on-board oscillators. The resulting signals can be mixed and processed in various ways through filtering and the application of modulations.
- Page 2 V-ZERO is compatible with any pickup position, but open strings E tracks better with bridge pickups. V-ZERO works with any type of guitar (6 strings, 7 strings, etc.), and different instrument tunings are possible. PITCH mod button VCA mod button...
- Page 3 Please note that the primary functions of CONTROL and PITCH MOD are also activated in LOW TRACKING mode. To return to the previous status, press CONTROL and PITCH MOD separately (not simultaneously). V-Zero saves the status of the LOW TRACKING FUNCTION and will recall it upon the next power-on. By default, it is turned off.
- Page 4 For example, take the LFO Speed, to be able to control it via MIDI you need to set CC number “1” (LFO Speed to MIDI) to “1”. Once the LFO SPEED to MIDI is set to “1” the LFO Speed control knob on V-Zero will stop working cause it’s now handled by MIDI and you can now send to CC number “0”...
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Page 5: Midi Messages Table
MIDI messages table CC number CC data Description Info 0-127 LFO Speed LFO Speed to MIDI 0-127 LFO Depth LFO Depth to MIDI 0: Sine 1: Square 2: Saw 3: Triangle 4: PWM LFO Wave Select LFO Wave Select to MIDI Invert the direction of the LFO sawtooth wave LFO SAW wave Invert 0-127... - Page 6 PURE DATA MIDI PATCH If you have a USB MIDI Controller you can download our Pure Data patch to start playing with V-Zero via MIDI from your computer. To run the V-Zero Pure Data patch you need to install Pure Data, go here to download Pure Data.