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:
Phone book
In order to use the hands-free system’s phone
book (list of contacts), PHONE must be displayed
at the top of the center console display
and the symbol must be visible.
The audio system stores a c ...
Driving Dynamics: Chassis
The Volvo S40 combines an engaging, dynamic driving experience with a high
level of active safety, thanks to its sophisticated suspension system, high
level of torsional rigidity, wide track and t ...
Reporting safety defects in Canada
If you believe your vehicle has a defect that
could cause a crash or could cause injury or
death, you should immediately inform Transport
Canada in addition to notifying Volvo Cars
of Canada Corp. ...
