How are you connecting the sound bar and the Optik TV box to each other and also to the TV?
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Generally for a sound bar you use the TOSLINK (digital optical cable) from TV (output) to the TOSLINK (digital in) on the sound bar. This way any input your tv is on will always work with the sound bar.
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1) Toslink (optical)
2) Digital coax
3) HDMI ARC
4) RCA analog