Korg CX-3 Owner's Manual page 8

Introduction
10.ROTARY section
Here you can control the rotary speaker effect.
For details on each key, refer to "ROTARY section key
settings" (p.13).
11.AMP section
[MASTER LEVEL] knob
This adjusts the volume.
After using the [EXPRESSION/OVERDRIVE] knob to
adjust the volume and distortion, use this knob to set
the final volume.
[TREBLE] knob
This knob adjusts the high frequency
range.
[BASS] knob
This knob adjusts the low frequency
range.
[REVERB OFFSET] knob
This knob adjusts the reverb depth.
When the knob is in the center position,
the reverb depth will be as specified by
the program. If the knob is turned all the
way toward the left there will be no
effect. If the knob is turned all the way
toward the right the effect will be
deeper.
4