Ooph, that 1500Hz dip is not nice at all. Now I am more interested in having Amir measure these, so see which is more accurate, the company or that magazine.Some 0-15-30° and decay measurements of a German magazine
https://www.hifitest.de/test/bildergalerie/lautsprecher_surround/arendal-1723-set_14571/7#b
https://www.hifitest.de/test/bildergalerie/lautsprecher_stereo/arendal-1723_tower_15240/6