Out of phase compared to what? It is more like they are focussed way back at infinity.
The front and back waves are not in time with each other. Show me an open baffle that has both back and front in time.
It’s the same speaker cone… it is absolutely in time.
It cannot be “not in time” unless the cone has thickness and is somehow an accordion.
It is OK to have a subjective opinion, but an objective opinion should be based in reality and fact.
I am wondering what measurements would tell us whether these speaker are more or less right than a box speaker??
the frequency response is a mess.
OK, use an EQ… then the FR is perfect.
You had the post about time domain, and a IB is about as good as it gets in transcient response.