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:
Fuel Formulations
Do not use gasoline that contains lead as a
knock inhibitor, and do not use lead additives.
Besides damaging the exhaust emission control
systems on your vehicle, lead has been
strongly linked ...
General information
Warning symbols in the instrument panel
As an enhancement to the three-point seat
belts, your Volvo is equipped with a Supplemental
Restraint System (SRS). Volvo's SRS
consists of seat belt p ...
Additional fuses in the cargo compartment (XC90 Executive)
The fuses in the cargo area are located behind
the panel on the driver's side of the cargo compartment.
When replacing a blown fuse, be
sure to replace it with a new one of the same
color and ...
