A:AnswerThe port (#5) on the Vizio P65 is for 4K (UHD) content at 60 Hz. It does not provide any of the upscaling functionality that helps with better display of 1080 HD content; use port #1 for your cable box. Your cable box most likely outputs 1080i which is HD, not UHD. Current sources for true 4K are via the USB port (computer downloads) and streaming from some providers such as Amazon Instant Video and Netflix.
A:AnswerI added my Vizio 2.1 soundbar to my UHD Vizio 65 inch tv with the provided cables. The soundbar is bluetooth but not the tv. You can pair other bluetooth devices to the soundbar only.
A:AnswerVizio's 4k HDTVs sound awesome on paper, but when I bought mine I was really disappointed. I upgraded to a Sony 4k for a few hundred more and it is a night and day difference.
A:AnswerNo, this TV does not support Bluetooth. You should be able to connect your sound bar via HDMI or Optical. I've never seen a Bluetooth only sound bar unless your referring to a portable Bluetooth speaker. In that case, you would need a Bluetooth adapter.
