I haven’t heard Klipsch in a long time. A good friend of mine had the late 80's Lascala’s and upgraded to the K-horns in 1990, The difference in sound was hard to believe, in fact he almost returned the new horns. That massive mid bass bump from the lascala’s was replaced with true deep bass and it took him awhile to adjust.
IDK if the boom is carried over to the new lascalas, but ’billstevenson’s’ suggestion of pulling speakers out from corners will settle down that massive bass bump while reducing room reflections. Large speakers are a pita to place perfectly, but at least it’s free.

