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:
Climate control maintenance
Special tools and equipment are required to
maintain and carry out repairs on the climate
system. Work of this type should only be done
by a trained and qualified Volvo service technician. ...
The alarm system
The alarm is automatically armed whenever the
vehicle is locked with the remote key or
optional Personal Car Communicator.
When armed, the alarm continuously monitors
a number of points on the ...
Overview
Volvo's boldly styled and intelligently configured Volvo XC70 AWD
(all-wheel-drive) estate offers significantly improved levels of
all-road-all-weather ability and an engaging driving experience c ...
