Mazda 2 2015 Owner's Manual page 352

Audio sound adjustment
Select the icon on the home screen and
display the Settings screen.
Select the tab to select the item you
would like to change.
Indication
Bass
(Low pitch sound)
Treble
(Treble sound)
Fade
(Front/Rear volume
balance)
Balance
(Left/right volume
balance)
ALC
(Automatic volume
adjustment)
Beep
(Audio operation sound)
ALC (Automatic volume adjustment)
The automatic level control (ALC) 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.
Setting value
Side: Low pitch
enhancement
Side: Low pitch
reduction
Side: Treble
enhancement
Side: Treble reduction
Front: Front speaker
volume enhancement
Rear: Rear speaker
volume enhancement
Right: Right speaker
volume enhancement
Left: Left speaker
volume enhancement
Off—Adjustment at
seven levels
On/Off
Interior Features
Audio System
5–51