Asus HDAV1.3 - Xonar Slim Sound Card User Manual page 67

Dolby Virtual Speaker (Virtualized 5.1 surround sounds over stereo speakers)
. Open TotalMedia Theatre > Setup > Audio.
Select 5.1 Channels in Audio Output Mode.
2.
3. Press Apply first, and then press OK.
4. Open the Xonar HDAV Center.
Select 2 Speakers in Analog Out.
5.
Check Dolby Virtual Speaker.
6.
ASUS Xonar HDAV .3
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