Samsung LT27A750ND-ZA - Manual (Page 60)

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English
■ Speaker Settings
● Speaker Select ( External Speaker / TV Speaker )
A sound echo may occur due to a difference in decoding speed between
the main speaker and the audio receiver. In this case, set the TV to
External
Speaker .
N
When Speaker Select is set to External Speaker , the volume and MUTE
buttons will not operate and the sound settings will be limited.
N When Speaker Select is set to External Speaker .
● TV Speaker : Off, External Speaker : On
N
When Speaker Select is set to TV Speaker .
● TV Speaker : On, External Speaker : On
N If there is no video signal, both speakers will be mute.