Mazda 2009 Mazda3 4-Door Owner's Manual page 213

2. Turn the audio control dial to adjust the
selected functions as follows:
Indication
NOTE
About 5 seconds after selecting any mode, the
volume function will be automatically selected.
To reset bass, treble, fade, and balance, press
the audio control dial for 2 seconds. The unit
will beep and "CLEAR" will be displayed.
Automatic Level Control (ALC)
The automatic level control is a feature
that automatically adjusts audio volume
and sound quality according to the vehicle
speed.
The volume increases in accordance with
the increase in vehicle speed, and
decreases as vehicle speed decreases.
Turn Left Turn Right
Select mode
Decrease Increase
bass bass
Decrease Increase
treble treble
Shift the Shift the
sound to the sound to the
front rear
Shift the Shift the
sound to the sound to the
left right
OFF ON
OFF ON
12Hr 24Hr
(Flashing) (Flashing)
Select the desired ALC mode.
Mode
Turn the audio control dial to select ALC
OFF or ALC LEVEL1 3 modes. The
selected mode will be indicated.
BEEP setting
The beep-sound when operating the audio
system can be set on or off.
ILLM EFT setting (Illumination setting
during operation)
The audio system illumination during
operation can be set on or off.
Time adjustment
Rotating the audio control dial switches
the display between 12 and 24-hour clock
time (page 6-66).
Interior Comfort
Audio System
Volume change
No change
Minimum
Medium
Maximum
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