There's a handful.
Immediately what comes to mind is the TAD equipped, five way, Westlake SM-1. Old school, hand tweaked, essentially no limits in any sane operating scenario. It's high resolving power at realistic, live playback levels, with very little non-linearity. TAD's motors in general, and magnetic designs more specifically, are state of the art. What they've learned in pro designs for live work, and studio monitoring, is offered in their HiFi offerings.
"The SM-1 is a 5-way, high power, phase coincident monitor. Designed as the ultimate in high power monitoring, the SM-1 offers 6 dB more headroom at low frequencies than most studio monitors."
From my understanding, their designer,...with Westlake since early 70's, is high on his proprietary interactive, phase coherent passive design. They bi-amp the thing, having the deep stuff handled separately, however all above that is passive, ideally phase coherent, and by all accounts stunningly real. It's all achieved with hand wound, hand built networks, to high tolerance. Problem is they're expensive,.... they're about $200k a pair, give or take options, etc. Zero cabinet contribution, low HOM, entirely non resonant horns, beryllium diaphragms, etc. All it takes is money.
Some cool pics too.
SM-1 Studio monitor
Soffit mounted SM-1
They're about $200k a pair, give or take options, etc.