My LG C1 should be installed in few days . Wanted to know if the C1 has an option to play audio on both external & internal speakers ? It would be really useful to have the external subwoofer of my sound bar for that added effect ..
C1 may have an option of "Internal + Optical". C8 has this.
Using an optical cable you may be able to connect it to a soundbar and further to a subwoofer.
This assuming the soundbar has optical input.