Ford Grand Marquis Owner's Manual page 60

Adjusting the tone balance and speaker
output of your radio
Increasing or decreasing bass response
Press the top c of the "BASS" button to
increase bass; press the bottom d of the
"BASS" button to decrease bass.
Increasing or decreasing treble response
Press the top c of the "TREBLE" button to
increase treble; press the bottom d of the
treble button to decrease treble.
Adjusting speaker balance
Balance control allows you to adjust the
sound distribution between the right and left
speakers. Press the top c of the "BAL"
button to shift the sound to the right
speakers, and press the bottom d of the
"BAL" button to shift the sound to the left
speakers.
Adjusting speaker fader
Fade control allows you to adjust the sound
distribution between the front and rear
speakers. Press the top c of the "FADE"
button to shift the sound to the front
speakers, and press the bottom d of the
"FADE" button to shift the sound to the back
speakers.
NOTE: Illuminated bars in the display show
relative levels of bass and treble, and
positions of speaker balance and fader
functions (left to right, front to rear).
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