2009 Volvo XC90 Owner's Manual - Page 241

10 Audio Audio system controls Bass speaker - SUBWOOFER (option) The subwoofer helps the system provide fuller sound and deeper bass. 1. Select AUDIO SETTINGS in the menu and press ENTER. 2. Select SUBWOOFER and press ENTER. See page 239 for information on setting the subwoofer level. 1. Select AUDIO SETTINGS in the menu and press ENTER. 2. Select EQ- REAR and press ENTER. 3. Use the menu selection buttons to set the level or use the SELECTOR control. 4. Press ENTER to select the next frequency. You can select five frequencies 5. Press ENTER until you come to the menu mode to save the changes you have made. 10 Equalizer FR EQ - FRONT (certain audio systems) This function is used to fine-tune the sound from the front speakers. 1. Select AUDIO SETTINGS in the menu and press ENTER. 2. Select Equalizer FR and press ENTER. 3. Use the menu selection buttons to set the level or use the SELECTOR control. 4. Press ENTER to select the next frequency. You can select five frequencies. 5. Press ENTER until you come to the menu mode to save the changes you have made. Optimal sound reproduction The audio system is calibrated for optimal sound reproduction through the use of digital signal processing. This calibration takes into account the speakers, amplifier, cabin acoustics, the seating position of the listener, etc., for each combination of vehicle and audio system. There is also dynamic calibration that takes into account the setting of the volume control, radio reception, and the vehicle's speed. The sound settings described in this manual, such as BASS, TREBLE, and EQUALIZER are only intended to enable the user to adapt sound reproduction to his/her personal preferences. Equalizer RR EQ - REAR (certain audio systems) This function is used to fine-tune the sound from the rear speakers. 241