8
Control
Overview
The Control section in the Voltage Lab 2 controls several features. MIDI to CV converter, octave
controller, clock source, arpeggiator & note sequencer, and additional MIDI settings. This section
will cover each of these features in detail starting with the MIDI to CV converter but first let’s
discuss the user interface.
User Interface Conventions
Each of the buttons in the Control section perform multiple functions. The main function, written
under each button in white, is performed by pressing the button. The secondary function,
written under each button in yellow is performed by pressing and holding the [EDIT BUTTON] then
pressing the desired button.
MIDI to CV Converter
The MIDI to CV converter allows the Voltage Lab 2 Voice to respond to digital MIDI messages
from a controller or DAW by converting digital MIDI data into analog control voltages. Voltage
Lab 2 utilizes the 1 volt per octave standard and responds to MIDI note on/off, MIDI note number
0-120, MIDI clock, MIDI clock start/stop, MIDI pitch bend, MIDI modulation or control change
messages, and MIDI Velocity. By default, the MIDI channel of Voltage Lab 2 is set to omni,
allowing the synthesizer to respond to all MIDI channels. The Voltage Lab 2 [MIDI INPUT JACK]
uses a standard MIDI “Type A” TRS 3.5mm minijack for MIDI input.
Note pitch can be routed internally from the MIDI section to control the pitch of both oscillators.
MIDI pitch control can be enabled or disabled for each oscillator independently. This allows for
maximum flexibility when patching. To enable or disable MIDI pitch control for an Oscillator, press
and hold the voice section’s [EDIT BUTTON] then press the selected oscillator’s [SEED BUTTON].
This will toggle MIDI pitch control on and off. The [GLIDE KNOB] adds portamento to the MIDI
pitch creating smooth transitions between midi notes. Turning the [GLIDE KNOB] to the right
increases the length of time it takes to slide from one not to the other.
The voice section’s [OCTAVE UP BUTTON] and [OCTAVE DOWN BUTTON] are used to transpose
the output of the MIDI pitch over a 7 octave range. Press [OCTAVE UP BUTTON] to shift notes up 1
octave and [OCTAVE DOWN BUTTON] to shift notes down 1 octave. Transposing the pitch only
affects the pitch of oscillators with MIDI pitch control enabled.
Note on and note off information is converted to a 5v or 0v gate signal. Note on = 5v. Note off =
0v. The MIDI gate signal can be internally routed to the gate input of function generators 1 and
2. This allows these modules to be triggered by the MIDI Gate signal without the need for patch
cables. The [HOLD BUTTON] forces the gate to remain high (on) after a MIDI note off message is
received. The gate remains high until the hold function is disabled.
The MIDI Gate signal can be enabled or disabled for the each function generator
independently. To enable or disable the MIDI gate signal, press and hold the voice section’s
[EDIT BUTTON] then press [F1 MODE BUTTON] or [F2 MODE BUTTON]. This will toggle MIDI gate
signal to each function generator on and off.
3 Voltage Lab 2 Voice Modules
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