Oldsmobile 2003 Bravada Owner's Manual page 172

AUTO EQ (Automatic Equalizer): Press this button to
choose bass, midrange and treble equalization
settings designed for country, jazz, talk, pop, rock and
classical program types.
To return to the manual mode, press the AUTO EQ
button until MANUAL appears on the display. Then you
will be able to manually adjust the bass, midrange
and treble using the AUDIO button.
If your vehicle has the Bose radio, your audio system
allows you to choose from five different equalization
settings: talk, driver, normal, spatial, and auto eq normal.
These settings can be used while listening to the
radio or the CD player. Press the AUTO EQ button to
select your choice.
TALK: This setting makes spoken words sound very
clear. When listening to non-musical material such
as news, talk shows, sports broadcasts and books
on tape.
DRIVER: This setting gives the driver the best sound
quality.
NORMAL: This setting enhances the stereo effects.
AUTO EQ NORMAL (Automatic Equalization): This
setting will provide the best overall Bose performance.
The radio will save separate AUTO EQ settings for each
preset and source.
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the right
and the left speakers, press and release the AUDIO
button until BAL appears on the display. Press the knob
above the AUDIO button to extend it, then turn the
knob to move the sound toward the left or the right
speakers.
To adjust the fade between the front and the rear
speakers, press and release the AUDIO button until
FAD appears on the display. Press the knob above the
AUDIO button to extend it, then turn the knob to
move the sound toward the front or the rear speakers.
Pressing and holding the AUDIO button for at least
two seconds will return all tone settings, including bass
and treble to flat.
SPATIAL: This setting makes the listening space seem
larger.
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