Trouble is Ked, almost all horns need a box to fill in the lower bass. The lowest note on a piano is around 27.5hz, which *very* rarely is reproduced by horns. Even the beloved WE monsters at Munich have no extension anywhere near that. Full range panels but not hybrids like Martin Logan (other than cls) would work.
Hybrids are not good at it, which is why I said Analysis. Logan full range goes nowhere so low. Around 55hz if I remember right. The Amphitryon goes to 25 or 22. But that's not the only thing, the ribbon tone is great. The bass horns can do it, not as smoothly as analysis but good enough