Buick 2007 Terraza Owner's Manual page 263

Setting the Tone (Bass/Treble)
(Bass/Treble/Midrange): Press this knob to
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select BASS, MIDRANGE, or TREBLE. Turn
the knob to increase or to decrease. If a station is
weak or has static, decrease the treble.
To adjust the bass, midrange, and treble to the
middle position, press and hold this knob when the
tone control is on the display. The level changes
to the middle position.
To adjust all tone and speaker controls to the
middle position, press and hold this knob when no
tone or speaker control is displayed. AUDIO
SETTINGS CENTERED appears on the display.
AUTO EQ (Automatic Equalization): Press
this button to select customized equalization
settings designed for country/western, jazz, talk,
pop, rock, and classical. Selecting CUSTOM
or changing bass or treble, returns the EQ to the
manual bass and treble settings.
The radio saves separate AUTO EQ settings for
each preset and source.
Adjusting the Speakers (Balance/Fade)
(Balance/Fade): To adjust the balance
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between the right and the left speakers, press this
knob until BALANCE 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 the rear
speakers, press this knob until FADE appears
on the display. Turn the knob to move the sound
toward the front or the rear speakers.
To adjust the balance and fade to the middle
position, press and hold this knob when the
speaker control is on the display. The level
changes to the middle position.
To adjust all tone and speaker controls to the
middle position, press and hold this knob when no
tone or speaker control is displayed. AUDIO
SETTINGS CENTERED appears on the display.
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