Tweeter horn meaning when cut very high - 7200hz

[weltersys]

I wonder what might be scientific differences between a flat baffle and proper waveguide. Could I hear it as an average but very interested listener?

Yes.

I would like to try Danley Synergy Horn type construction so the compression driver would come closer to mids.
But as three sides instead of four.
What could be expected from that?

A virtual single point source with the horn wall angles determining the basic pattern, down to the lower range of pattern control determined by the mouth dimensions.