Samsung UE40D7000LU E-Manual page 83

Speaker Settings
■
● Speaker Select (External 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
Speaker.
When
N
buttons will not operate and the sound settings will be limited.
When
N
◀
● TV
Speaker Select is set to
Speaker Select is set to
Speaker: Off, External
/ TV Speaker)
External Speaker, the volume and
External Speaker.
Speaker: On
English
External
MUTE
▶