LG CineBeam PF610P-SA Owner's Manual page 106

Playing audio through the projector's internal speakers and external audio
device simultaneously
Audio can be played through multiple devices simultaneously.
• Using [Optical + Internal Projector Speaker]
(Q. Settings)
Projector Speaker]
Audio is played through the projector's built-in speakers and the audio device
connected to the digital optical audio output port simultaneously.
– Only available for models with an optical digital port.
• Using [Wired Headphones + Internal Projector Speaker]
(Q. Settings)
Internal Projector Speaker]
Audio is played through the projector's internal speakers and the wired
headphones simultaneously.
– If you connect the wired headphones while the projector is powered on, it
automatically detects the wired headphones and redirects audio through
them.
– Only available for models with a Wired Headphones port.
– Some models may not be supported.
[Sound] [Sound Out]
[Sound] [Sound Out]
[Optical + Internal
[Wired Headphones +
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