Infotainment - advanced audio settings
Sound settings for the radio and other media sources can be adjusted to your preferences.
To access the advanced sound settings, press SOUND to open the menu. Turn TUNE, go to Premium sound and press OK/MENU.
Sound stage
Sound reproduction can be optimized for different sections of the passenger compartment. The sound stage can be set for the Driver seat, the Rear seats or the Whole car.
Surround
When switched on, the system will automatically select settings for the best sound quality, which is normally DPL II and 
will appear on the screen. If the recording was made using Dolby Digital technology, playback will be provided with this setting and 
will appear on the screen. If Surround is switched off, audio will be provided using 3 channel stereo.
The Surround level can be adjusted separately when the function is on.
Subwoofer
The subwoofer's sound level can be adjusted separately.
Center speaker
The center speaker's sound level can be adjusted separately. If Surround is on, DPL II center level will be selected; otherwise 3 channel center level is selected.