GIGABYTE GA-MA790XT-UD4P - Manual (Page 99)

Appendix - 99 -
(Note) When Dolby Digital Live is enabled, only digital audio output (S/PDIF) is working, and you will
not hear any sound from analog speakers or headphone.
1. : Click Dolby Pro Logic IIx. The system will expand 2-channel audio
for a 7.1-channel surround sound playback.
2. : Click Natural Bass to enable speaker bass effect.
Install the Dolby GUI Software driver from the motherboard driver disk. Click the Start icon . Point
to All Programs, Dolby Control Center to access the utility.
(The following illustration demonstrates a 7.1-speaker configuration as an example.)
5-2-3 Enabling the Dolby Home Theater Function
Before Dolby Home Theater is enabled, you get only 2-channel playback output (from
the front speakers) when playing 2-channel stereo sources. You must play 4-, 5.1-, or
7.1- channel content to get 4-, 5.1-, or 7.1- channel audio effects. With Dolby Home
Theater enabled, 2-channel stereo content will be transformed into multi-channel audio,
creating a virtual surround sound environment
(Note) .