Using The Built-In Tuner - Alesis X Owner's Manual

To bypass the effects section entirely, hold down both the
Down
buttons – or press both footswitches – for less than half a second. The screen will
read by ( ) to indicate that the effects have been bypassed.
You may now control the amplifier's volume with the volume knob. Turning any other
knob restores the effects.
Program Up
Press both the
enter both Bypass and Mute mode.
Play the open string you wish to tune. Use the following guide when tuning:
Visual Guide to Tuning
The bottom four segments
rotate counterclockwise if pitch
is low. The top four rotate
clockwise if pitch is high. An 8
means pitch is in tune.
The twelve possible
pitches (a decimal point
indicates a sharp):
If you turn the VALUE knob while using the tuner, the display shows you the setting for the
X Guitar's pitch reference, which is set to 440Hz (shown as
C. The possible range of values for this setting is 35 to 45, which represents 435Hz to 445Hz.
Every time you turn the X Guitar's effects module on, the reference pitch is reset to 440Hz.
16
Bypassing the effects

Using the built-in tuner

Program Down
and
= no pitch detected
Tuning to a pitch other than A=440
Program Up
buttons for more than half a second to
Low
In tune
Program
and
High
) for the A note above middle