inherent design flaws with a 3 way, 15" / 8" / horn (large tower) speaker?

Horns fell out of favor due to there lack of color and tone .  Others called them shouty as well.  I know from experience and ownership. I own La Scalalas and Heresys  (my first '76) still match ok with small old McIntosh.  But the big ones yep 15 inch non breathable woofeers still a struggle.

A 15 inch woofer can go up to 800hz easily in a two-way system. Altec A7's (VOTT). Same for the Altec 19. Why waste money on car speakers? Vintage Altec 15's can easily be found on EBay and other sites.

i am diving in perhaps before im ready.  i did a perfunctory look around at reviews along the lines of, "musical 15 inch woofers" and didnt get enough guidance to make much sense of it.  i ended up purchasing a pair of woofers that are distinctly designed for car audio, due to their construction quality for the price, their handling capacity, and with a recommendation from a youtuber whose projects have inspired me.  Anyway, after the purchase (still havent received) i realize that i was going away from musicality towards thump.  i am correcting my ways.