Ford 2003 Mustang Owner's Manual page 32

Controls and features
3. Press and hold a memory preset control until the
sound returns, indicating the station is held in
memory on the control you selected.
Bass/treble adjust
The bass adjust
control allows you to
increase or decrease
the audio system's
bass output.
The treble adjust
control allows you to
increase or decrease
the audio system's
treble output.
Speaker balance/fade adjust
Speaker sound
distribution can be
adjusted between
the right and left
speakers.
Speaker sound can
be adjusted between
the front and rear
speakers.
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BASS
TREB
BASS
TREB
BASS
TREB
BAL
BASS
TREB
BAL
BAL
FADE
BAL
FADE
FADE
FADE