@YesI'maEE
I remember this controversy. Note that Audioholics
arbitrarily declare the correct listening axis is -20 degrees and deem it a surround speaker. But the Polk T15 manual and website says nothing about that at all.
Very similar to the Hegel thread right now. Bad specs/technical documentation and some reviewers saying after the fact they have the "true" results and interpretation, which are at odds with the manufacturer's communications.