A:AnswerSpec wise these are both the same. The only difference between the two would be the color of the bezel. The KS8000 being silver, and the KS800D being black.
A:AnswerI paired my Bluetooth keyboard to the TV. It works when I use the web browser, but not when i use YouTube or other built in apps.
That being said, the on screen keyboard is a million times faster that the one from my old TV (about three to four years old).
A:AnswerCheck the output of your cable box and any other Source, ensure it is set to 1080P.
On Your TV:
Settings: Picture Size: 16:9 and AUTO, I guess you could set it to ON as well, but I recommend AUTO.
A:AnswerSorry. Not sure. I know the TV is wifi, but I have not seen a Bluetooth setting. I have a bluetooth speaker but it links to my phone.I will try to find an answer and repost.
A:AnswerThere is not a center mount stand. It has 2 sets of legs, 1 on each end. Would send pic however mine is wall mounted. Wall mount needs purchased separately.