Pontiac 2005 Grand Prix - Manual (Page 227)

Setting the Tone (Bass/Treble)
AUDIO: Push the AUDIO knob until BASS, MID, or
TREB appears on the display. Turn the knob to increase
or to decrease. If a station is weak or noisy, decrease
the treble.
To adjust bass, midrange, or treble to the middle
position, select BASS, MID, or TREB and push and hold
the AUDIO knob. The display level will be adjusted to
the middle position and you will hear a beep.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone
or speaker control is displayed. CENTERED will
appear on the display and you will hear one beep.
AUTO EQ (Automatic Equalization): Press this button
to select customized equalization settings designed
for country, 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 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 hold the AUDIO knob until FAD appears on
the display. Turn the knob to move the sound toward the
front or the rear speakers.
To adjust the balance and the fade to the middle
position, select balance or fade and push and hold the
AUDIO knob. The display level will be adjusted to
the middle position and you will hear a beep.
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. CENTERED will
appear on the display and you will hear one beep.
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