GIGABYTE AMD Socket 939 Processor Motherboard GA-K8NF-9-RH - Manual (Page 81)

Appendix - 81 -
English
STEP 3:
Click "Speaker Configuration" then click on the left
selection bar and select "6CH Speaker" to complete
6 channel audio configuration.
6 Channel Audio Setup
STEP 1 :
Connect the front channels to "Front Speaker Out",
the rear channels to "Rear Speaker Out", and the
Center/Subwoofer channels to "Center/Subwoofer
Speaker Out".
Front Speaker Out
Rear Speaker Out
Center/Subwoofer
Speaker Out
STEP 2:
Following installation of the audio driver, you'll find
a Sound Effect icon on the lower right hand
taskbar. Click the icon to select the function.