GMC Hummer H3 2008 Owner's Handbook Manual page 87

Instrumentation and Controls
Adjusting the Speakers
Press the knob repeatedly to
choose the BAL, FAD or FADE
speaker control.
Choosing BAL allows you to adjust
the sound between the right and
left speakers. Choosing FAD or
FADE allows you to adjust the
sound between the front and rear
speakers.
After choosing the desired speaker
control, rotate the knob to the
right or left to adjust the speakers.
The middle position balances the
sound between the speakers.
The display will show your setting.
. . . 86
To quickly set the speaker controls
to their middle positions, press
and hold the knob while a speaker
control is displayed.
You will hear one beep.
To quickly set all speaker and tone
controls to their middle positions,
do not select a control. Just press
and hold the knob when no tone
or speaker control is displayed.
You will hear one beep.
CEN or ALL CENTERED will
appear on the display.
Manual Tone Adjustment
Press the knob repeatedly to
choose the BAS (bass), BASS,
TRE (treble) or TREB (treble) tone
control.
After choosing the desired tone
control, rotate the knob to the
right or left to increase or decrease
the level of the selected tone.
The display will show your setting.
The middle position balances the
level.
To quickly set the tone controls to
their middle positions, press and
hold the knob while a tone control
is displayed.