GMC 2007 Yukon XL Owner's Manual page 282

Setting the Tone (Bass/Treble)
BASS/MID/TREB (Bass, Midrange, or
Treble): To adjust bass, midrange, or treble,
press the tune knob until the tone control labels
appear on the display. Continue pressing to
highlight the desired label, or press the pushbutton
positioned under the desired label. Turn the
tune knob clockwise or counterclockwise to adjust
the highlighted setting. You can also adjust the
highlighted setting by pressing either the SEEK,
FWD, or REV button until the desired levels
are obtained. If a station's frequency is weak, or if
there is static, decrease the treble.
To quickly adjust bass, midrange, or treble to the
middle position, press the pushbutton positioned
under the BASS, MID, or TREB label for more than
two seconds. You will hear a beep and the level
will be adjusted to the middle position.
To quickly adjust all tone and speaker controls to
the middle position, press the tune knob for
more than two seconds until you hear a beep.
EQ (Equalization): Press this button to choose
bass and treble equalization settings designed
for different types of music. Your choices are pop,
rock, country, talk, jazz, and classical. Selecting
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MANUAL or changing bass or treble, returns the
EQ to the manual bass and treble settings.
Unique EQ settings can be saved for each source.
If your radio is equipped with a Bose
system, your EQ settings are either MANUAL
or TALK.
Adjusting the Speakers (Balance/Fade)
BAL/FADE (Balance/Fade): To adjust balance
or fade, press the tune knob until the speaker
control labels appear on the display. Continue
pressing to highlight the desired label, or press the
pushbutton positioned under the desired label.
Turn the tune knob clockwise or counterclockwise
to adjust the highlighted setting. You can also
adjust the highlighted setting by pressing either the
SEEK, FWD, or REV button until the desired
levels are obtained.
To quickly adjust balance or fade to the middle
position, press the pushbutton positioned under the
BAL or FADE label for more than two seconds.
You will hear a beep and the level will be adjusted
to the middle position.
To quickly adjust all speaker and tone controls to
the middle position, press the tune knob for
more than two seconds until you hear a beep.
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audio