Optimal sound reproduction

The audio system is pre-calibrated for optimal sound reproduction using digital signal processing.
This calibration takes into account factors such as the speakers, amplifier, cabin acoustics, the listeners' seating positions, etc., for each combination of vehicle/infotainment system.
There is also a dynamic calibration that takes into consideration the volume level, radio reception, and the speed of the vehicle.
The settings that are described in this manual, (Bass, Treble, Equalizer etc.) are only intended to enable the user to adapt sound reproduction to his/her personal tastes.
See also:
Comfort and convenience
While the interior of the Volvo S40 places an emphasis on style, form has not
been allowed to take precedence over function. The fascia ergonomics have been
carefully designed and drivers will fin ...
Turning off the accessory alarm sensors
In certain situations it may be desirable to turn off the accessory inclination
and movement alarm sensors if, for example, you drive your vehicle onto a ferry
where the rocking of the boat could ...
Day/Night mode
The screens can be set for three different lighting
conditions: Auto, Day or Night.
Press on the remote control and
change
the setting under Day/Night mode on the
screen. See also page 251 f ...
