Chevrolet 2006 Express Van, Owner'S Manual, Page: 189 / 404

Setting the Tone (Bass/Middle/Treble)
AUDIO: Push and release the AUDIO knob until BASS,
MID, or TREB appears on the display. Turn the knob
to increase or to decrease. The display will show the
bass, midrange, or treble level. If a station is weak
or noisy, decrease the treble.
To adjust the bass, midrange, and treble to the middle
position, push and hold the AUDIO knob. The radio
will produce one beep and adjust the display level to the
middle position.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone
or speaker controls are displayed. ALL CENTERED
will appear on the display and you will hear a beep.
AUTO EQ (Automatic Equalization): Press this button
to select customized equalization settings designed
for country/western, jazz, talk, pop, rock, and classical.
To return to the manual mode, press the AUTO EQ
button until CUSTOM appears on the display. Then
manually adjust the bass, midrange, and treble using the
AUDIO knob.
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the right
and the left speakers, push and release the AUDIO
knob until BAL appears on the display. Turn the knob to
move the sound toward the right or the left speakers.
To adjust the fade between the front and rear speakers,
push and release the AUDIO knob until FAD appears
on the display. Turn the knob to move the sound toward
the front or the rear speakers.
The fade feature may not be available on all radio
systems.
To adjust the balance or fade to the middle position,
push and hold the AUDIO knob while BAL or FAD
is displayed. The radio will produce one beep and adjust
the display level to the middle position.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob while no tone
or speaker controls are displayed. ALL CENTERED
will appear on the display and you will hear a beep.
3-67