As long as your MLP is 8 feet or more from the 180, a height of 16" will work very well with no inclination required.
Do you hear a difference between inclined and not inclined?
The stand the speaker sits on is 15.25ā high. My MLP is about 12ā away. Do you think Iām worrying over nothing?
At 12 feet away, the angle subtended by your ears to the baffle's normal of a non-inclined 180 would be 5 to 10 degrees, depending on how upright you sit. That angle falls well within Axiom's design parameters.
Inclining the 180 may result in unnatural sound depending on ceiling height. Try to see what you discover.