You can take THX recommendation as a reference (but just a reference only - you better try yourself in the TV store). THX recommends the subtended viewing angle (the viewing angle between the left edge to the right edge of your screen) is around 36 degree - which means the recommended viewing distance is around 1.5 x screen width (the details of the calculation is omitted here). The screen width of a 46" TV is about 40", and the THX recommended viewing distance is exactly at 60" (1.5 x 40"), which is 5 feet.
But this is for viewing cinemascope movie (e.g. 2.35:1 aspect ratio). For watching 16:9 content (TV or gaming), you may take some time to adjust (meaning you will "adapt" to it after some time).
Zappiti Pro 4K HDR Media Player
Pioneer UDP-LX500
Pioneer SC-LX901
JVC DLA-N5
JL Audio E110
PS Audio Power Plant P10