Samsung UE50ES6300U E-Manual page 20

is receiving a DTV signal, the TV will
send 5.1 CH sound to the home theatre
receiver. When the source is a digital
component such as a DVD / Bluray
player / cable box / STB (Set-Top-Box)
satellite receiver and is connected to the
TV via HDMI, only 2 CH audio will be
heard from the home theatre receiver. If
you want to hear 5.1 CH audio, connect
the digital audio out jack from your
DVD / Blu-ray player / cable box / STB