The GNX4 has several options for real-time control over effects parameters in each of its presets.
Parameters can be modified during performance both manually and automatically by several methods. These
are referred to as expression controllers and include the following: the built-in Expression Pedal, Internal
LFOs (low frequency oscillators), and the Control Footswitches. Each of these controllers can be
programmed specifically for each preset,giving you many options for manipulating each in a different manner.
Expression Pedal
The Expression Pedal on the GNX4 can control up to 3 parameters in real time.Each parameter assigned
to the Expression Pedal can have specific ranges of how much the parameter is controlled by using the
minimum and maximum controls. The GNX4’s Expression Pedal includes DigiTech
®
’s exclusive V-Switch.
The V-Switch lets you switch the Expression Pedal assignment on the fly. Apply extra pressure to the toe
of the Expression Pedal to engage the V-Switch, and the Expression Pedal switches between the assigned
parameter and the Wah. The sensitivity or amount of pressure required to engage the V-Switch can be
adjusted to suit your personal taste (or weight of your foot).See page 104 for the V-Switch
Threshold/Sensitivity adjustment procedure.
Expression Pedal Links 1-3
Each preset can have up to 3 parameters assignments to the Expression Pedal. Each assignment has
the following assignment options:
1.Parameter Type (see parameter list on page 48)
2.Min Value
3.Max Value
The procedure for assigning a parameter to the Expression Pedal is as follows:
1.Press either Effect Select button until the Expression Assign row is selected.
2.Press the STATUS button until the display reads
exp pdl1 (Expression Pedal Link 1), exp pdl2
(Expression Pedal Link 2),or exp pdl3 (Expression Pedal Link 3),depending upon which assignment
you want to use or the number of parameters you intend to assign.
3.Rotate Knob 1 until the parameter appears in the display. See the Expression Parameter Assignment
List on page 48 for a complete list of assignable parameters.
4.Rotate Knob 2 to select the minimum value the parameter reaches with the Expression Pedal in the
toe up position.
5.Rotate Knob 3 to select the maximum value the parameter reaches with the Expression Pedal in the
toe down position.
6.Store your Expression Pedal assignment to your preset.See page 58 for more information on storing
presets.
Wah Pedal
The GNX4’s wah effect can be programmed to have specific heel and toe ranges in each preset. These
settings are configured in the Expression Assign row of the matrix. To customize the heel/toe range for
the wah effect,follow these steps:
1.Press either EFFECT SELECT button until the Expression Assign row is selected.
2.Press the STATUS button multiple times until WAH PDL appears in the display.
3.Rotate Knob 2 to set the heel position of the wah effect. Ranges from
0 to 99.
4.Rotate Knob 3 to set the toe position of the wah effect. Ranges from
0 to 99.
5.Press EXIT when finished.
45
Expression Pedal Assignment
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