One considertion to ponder here in this discussion of xover box types trying to compete with a higher end FR design is the evident fact that woofers are not so good at fq's above 1500hz and Tweeters not so good at below the critical 3k hz range.
There is this huge gap, falling within the heart and soul of the musical image.
Which is the reason for Dali, Wilson and countless other designs have evolved into complex multi driver designs.
Creating a big problem. A 2 way has always sounded better than a 3,4,5 way.
With each added driver the musical image gets more crop, splice, sliced and butchered. Chop Suey.
Yeah sure its **full range** but full of e xactly what, its not easy to say.