See also:

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, th ...

Recirculation/air quality system
Recirculation This function can be used to shut out exhaust fumes, smoke, etc., from the passenger compartment. The air in the passenger compartment is then recirculated, i.e., no air f ...

Listening to satellite radio
The Sirius satellite system consists of a number of high elevation satellites in geosynchronous orbit. NOTE The digital signals from the Sirius satellites are line-of-sight, which means ...