Looking for new speakers for large audio room

Common clearthinker, why not!

Given you amplifier's power I think  Atma sphere's recommendation makes the most sense. Without a line source dipole I think horns will work best. However, with subwoofers your amp will drive Sound Labs 845's but you would need two more subwoofers for it to work really well.
I use JC 1's which are Class A to 25 watts and I rarely use more than that. I also believe your Pass will push a lot more power just not in class A.

shawarma, what is the ceiling height? That is certainly a larger room.
To get real low end in a room that size you will need at least four 15" subwoofer drivers. You would need Trios and subwoofers.
8 or 9 foot (depends on ceiling height) Sound Labs with four 15" subwoofers will work but that is pushing you price limits. Magneplanar 20.7s will work well unless you like listening above 95 dB. You could afford those and subwoofers. Line source speakers work better in larger rooms. Their volume does not drop off as fast with distance.