Lexicon manual MPX G2 Internal Controllers, Knob, LFO1 and LFO2

MPX G2 Internal Controllers

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This chapter describes all of the MPX G2 internal controllers. Examples of presets which make use of a controller are noted to the side of each description. The controls for making individual adjustments and assignments to the control- lers are available in the Edit menu and are described in Chapter 3: Editing.

The Knob controller allows you to define your own custom patch controller. Once defined, you can place it in the Soft Row with its own label. You can even define the upper and lower limits of the control. Use Knob when you want to manually adjust the values of more than one parameter simultaneously, or when you want to limit the range of control over a single parameter.

Knob (Soft knob assignment for front panel parameter control)

Parameter	Range	Description
Value	0-127	initial setting
Low	0-127	Low point of range
High	0-127	High point of range
Name	9 characters	Custom name

MPX G2 Internal Controllers

Knob

In general an LFO is a source whose output cycles constantly between 0, 127 and 0. Each LFO produces four simultaneous output waveforms: Sine, Cosine, Triangle and Pulse. Rate controls how fast the output cycles — you can set the rate as either a frequency (such as 3Hz) or as a rhythmic value (such as 2:3 cycles per beat). A Depth parameter scales the output range. Several additional parameters make the MPX G2 LFOs very flexible. Mode, OnSrc and OnLvl allow you to turn the LFOs on and off in different ways based on the output levels of other MPX G2 controllers. PW allows you to dynamically modify the shape of LFO waveforms. Phase lets you change the phase of the Cosine relative to the other waveforms (Sine, Triangle, and Pulse).

NOTE: In all modes, the LFO completes its current cycle before stopping. The first press of Tap resets the LFOs.

LFO (1 or 2)

Parameter	Range	Description
Mode	Off, On, Latch, Gate,	Controls behavior of Source
	Once, Reset, RTrig	when OnLvl is reached
Rate	0-50.00/1:24-24:1	LFO speed
(Rate units)		Option of Rate: Hz or Cycles per Beat
PW	0-100%	Varies the pulse width of all shapes
Phase	-120° to +120°	Relative phase difference between Sine and
		Cosine
Depth	0-100%	Controls the amplitude of all shapes
OnLvl	0-127	Start/Stop level for Latch, Gate, Once, Reset
		and RTrig modes
OnSrc	Off, On, any internal	Determines which control source is used to
	or MIDI controller	turn LFO on and off in Latch, Gate, Once,
		Reset and RTrig modes.

LFO1 and LFO2

LFO Modes

Off: LFO is disabled (OnSrc and OnLvl are ignored)

On: LFO is always on (OnSrc and OnLvl are ignored)

In the remaining modes, when the value of OnSrc rises above or falls below the value of OnLvl the LFO is switched on and off as follows:

Latch: LFO toggles on and off whenever OnSrc value rises above OnLvl

Gate: LFO stays on while OnSrc value is greater than OnLvl

Once: LFO sweeps through one complete cycle when OnSrc value rises above OnLvl. (During the sweep, further changes of OnSrc value are ignored.)

Reset: LFO is always on, but its phase resets to 0° whenever OnSrc value rises above OnLvl.

RTrig: LFO completes one cycle when OnSrc value rises above OnLvl. (The phase of the LFO can be reset to 0° if OnSrc value rises above OnLvl during the sweep.)

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