18EnglishConnectionsConnecting to an Audio DeviceUsing an Optical (Digital) or a Headphone ConnectionAvailable devices: digital audio system, amplifier, DVD home theatre, PC✎ DIGITAL AUDIO OUT (OPTICAL)x When a Digital Audio System is connected to the DIGITAL AUDIO OUT (OPTICAL) jack, decrease the volume ofboth the TV and the system.x 5.1 CH (channel) audio is available when the TV is connected to an external device supporting 5.1 CH.x When the receiver (home theatre) is set to on, you can hear sound output from the TV’s optical jack. When the TVis receiving a DTV signal, the TV will send 5.1 CH sound to the home theatre receiver. When the source is a digitalcomponent such as a DVD / Blu-ray player / cable box / STB (Set-Top-Box) satellite receiver and is connected tothe 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 satellite receiver directly to anamplifier or home theatre.✎ Headphones H: You can connect your headphones to the headphones output on your set. While the headphonesare connected, the sound from the built-in speakers will be disabled.x Sound function may be restricted when connecting headphones to the TV.x Headphone volume and TV volume are adjusted separately.OPTICALDigital Audio System