Vizio VO47L FHDTV20A_LPL Service Manual page 14

B. Audio: (Bold: Default)
a. Audio Mode (Flat/Rock/Pop/Classic/Jazz)
b. Equalizer
c. Balance (-50~50, 0)
d. Surround (On/Off)
e. Digital Audio Out (PCM/Off/Dolby Digital)
f. Speakers (On/Off)
g. Audio out (Fixed/Variable)
h. Lip Sync (0~5)
i. Reset Audio Mode
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File No. SG-0275