I have the same issue with a Samsung F5300 TV connected to a Samsung N450 soundbar via HDMI(ARC). The TV's default audio delay setting is 80ms delay. That's fine when the digital output mode is set to PCM, but when it's set to Dolby, 80ms is too high. And when I dial it back all the way to 0 there's still some audio lag. Also, the TV and soundbar each have their own audio sync functions. The soundbar is set to 0 also. Just wondering whether it's recommended to adjust audio delay at the TV or the soundbar - or does it not really make a difference which I adjust. For what it's worth, adjusting the TV's delay is easier, since the soundbar's sound mode setting options time out very quickly - making it hard to try various settings and evaluate their effects. In ARC mode, the TV has its own equalizer screen that lets you adjust the soundbar's equalizer from the TV'a audio settings menu. I had thought that the audio delay setting might work the same way, but I don't think it does.
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Is there a way to determine what version of firmware is currently loaded on the HW-N450? I just bought a factory refurbished one, and am curious as to whether I should update the firmware. The download site has 2 files, both dated Oct 5, 2018 (i.e. a year ago). Would these already have been installed as part of the factory refurb? If not, should both files be installed?
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