Panasonic TC-55AS530U - Manual (Page 115)

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Advanced settings
MENU Menu > Sound
Surround
(
On/Off)
Enhances audio L/R response when listening to stereo.
Ideal for music and action movies.
● Gray-out when using Home Theater.
TV speakers
(
On/Off)
Enables the TV’s built-in speakers.
Switches to
Off when using external speakers.
A.I. sound
(On/Off)
Equalizes overall volume levels across all channels and external inputs.
● Gray-out when using Home Theater.
Volume leveler
(+/-6)
Minimizes volume disparity after switching to external inputs.
● Gray-out when using Home Theater.
Distance to wall
(
Over 1ft (30cm)/Up to 1ft (30cm))
Setting for wall mounted TV.
Over 1ft (30cm):
TV is on a stand. Keeps current setup.
Up to 1ft (30cm):
TV is mounted. Reduces low frequency level to prevent resonance.
● Gray-out when using Home Theater.