Samsung UN75ES9000F E-Manual page 102

External
are turned off. You will hear sound
through the external speakers only.
When the
Speaker, both the TV's speakers and
the external speakers are on. You
will hear sound through both.
N
When the
External
and mute function will not operate
and the sound settings will be
Speaker, the TV's speakers
Speaker Select
Speaker Select
Speaker, the volume buttons
is set to
is set to
TV