Reverb Output Level; Modulation; Modulation Depth; Modulation Speed - Alesis GT Reference Manual

Reverb Output Level

The display says:
This mixes the reverberated signal into the master effects output bus.

Modulation

The display says:
This allows you to choose between tremolo or panning.

Modulation Depth

The display says:
This determines the depth of either the panning or tremolo, depending
upon which you have selected.

Modulation Speed

The display says:
This determines the speed of either the panning or tremolo, depending
REVERB LEVEL:
9 9
MODULATION:
T REMOLO
MODULATION DEPTH
0 0
MODULATION SPEED
0 0
76