Volvo XC90 Owner's Manual page 195

Infotainment system
Audio system functions
SURROUND (option) Dolby
Surround Pro Logic II
Dolby Surround Pro Logic II with centre
dashboard speaker provides a more realistic
audio experience. The normal left-right stereo
channels are divided into left-centre-right and
are coupled with surround sound from the
rear speakers. Surround sound can be
described as the types of residual tones
which are audible in a concert hall.
Dolby Surround Pro Logic II functions in CD
and MD modes. 3-Channel stereo is recom-
mended for AM and FM radio broadcasts.
Dolby Surround Pro Logic II is available for
Premium Sound audio only.
NVQ
– Select AUDIO SETTINGS in the menu
and press ENTER.
– Select SURROUND and press ENTER.
– Select Dolby AM/FM or Dolby CD/MD
and press ENTER.
– Select PRO LOGIC II, 3 CHANNEL or
OFF and press ENTER.
• The symbol PL II is shown in the
display if Pro Logic II has been selected.
• 3 CH is shown in the display if
3 CHANNEL has been selected.
• OFF means the audio system is in normal
stereo mode.
Dolby Surround Pro Logic II is a
trademark of Dolby Laboratories Licensing
Corporation. Dolby Pro Logic II Surround
System is manufactured under license from
Dolby Laboratories Licensing Corporation.
Bass speaker – SUBWOOFER
(option)
The subwoofer helps the system provide
fuller sound and deeper bass.
– Select AUDIO SETTINGS in the menu
and press ENTER.
– Select SUBWOOFER and press ENTER.
A check in the box indicates that
SUBWOOFER is activated.
Equalizer FR (certain models)
This function is used to fine-tune the sound
from the front speakers.
– Select AUDIO SETTINGS in the menu
and press ENTER.
– Select Equalizer FR and press ENTER.