The dispersion pattern narrows exponentially starting at ~300Hz, and by the time it reaches 1Hkz where it only has decent output to 20 degrees, by 30 degrees it drops by ~20dB
and if you move more that 5 degrees off axis it tanks in output above 4KHz.
A speaker with such a rapidly narrowing polar plot will have an incredibly small sweet spot. it has to be pointed directly at the listener. anyone else even 5 degrees off-axis loses 80% of the treble.