Moog Music Minimoog Voyager XL (User’s Manual Addendum) - Manual (Page 2)

Minimoog Voyager XL User’s Manual Addendum
Understanding the LFO2 Module and MIDI Implementation
Specifications subject to change without notice
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Note: The External RATE CV jack is ring-powered which means that you can attach an expression pedal
to the jack and control the LFO2 RATE via this pedal as well as plugging in an active control-voltage
source with a 0V to +5V range.
RATE EXAMPLES
RATE KNOB
RATE CV INPUT FREQUENCY PERIOD
0V (CCW) 0V (no input) 0.02 Hz 50 seconds
5V (CW) 0V (no input) 20 Hz 0.05 seconds
0V (CCW) 5V 20 Hz 0.05 seconds
5V (CW) 5V 20 Hz (*) 0.05 seconds
(*) Any CV sum greater than 5V will be limited to 5V internally
As you can see from the table above, LFO2 can both be used to extend the modulation rates to very slow
rates (i.e. slower than the Voyager LFO module). Faster audio-rate modulation is available on the
Voyager via the standard sources internally (for example using Oscillator 3 as an LFO source) or
externally by patching in audio-rate devices into the XL’s CV IN patch panel.
EXTERNAL CLOCK
There is also an EXT. CLOCK jack on the LFO2 module. When nothing is connected to the CLOCK jack,
the LFO2 module is either free-running or sync’d to MIDI clock (explained later). Using the CLOCK input,
the LFO2 module can also be directly triggered from an external clock (or GATE) source.
Please note that the CLOCK input needs an active signal such as the KBD GATE CV
available from the CV OUTPUT section. It requires a 0V to 5V gate source. Passive
footswitches will not work with this input.
External clocking of the LFO2 module allows you to single trigger LFO events as well as synchronize the
LFO2 to other timing sources. The “envelope” time of the clocked pulse will still be determined by the
RATE parameters. For example, if your RATE is currently set to 1Hz and your waveform is TRIANGLE,
you will be one cycle of triangle every time you clock the LFO2 module (i.e. the triangle period will be one-
second but will not retrigger). Clocking the LFO more frequently than the LFO period is fine – it will just
retrigger the waveform from the current voltage.
MIDI IMPLEMENTATION
The LFO2 module has a basic set of MIDI features that further extends your ability to work with the LFO2
module and to interconnect and synchronize it to external sources such as DAW’s, other MIDI devices, or
controllers like the Moog MP-201 Multi-Pedal.
The LFO2 MIDI input is shared with the main Voyager MIDI input port. The default MIDI channel is 1.
The main Voyager engine and the LFO2 module do not share common MIDI CC’s so they can both
occupy the same MIDI channel. Alternatively, both the main Voyager engine and the LFO2 module can
have their MIDI channels assigned. The LFO2 module’s MIDI channel will always default to channel 1
when powered-up.