Looking for new speakers for large audio room

Edit: my ceiling works as a baffle with wood going across if it’s affecting the bass.

cant Demo the vandersteen the dealer can only order them;)

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.

Hello,
+1 for the extra subwoofers. If you are not going to go that route I would go with one of the KEF blade 2s. They have side firing woofers that creat a ton of bass. If you don’t believe me go listen to a pair in a room half the size. These things need breathing room and you have it. Also, with such a big room you want the music to sound good outside of the perfect listening chair. These do it in spades. I love the KEF Reference 5s. You would be better off with the blades. KEF has a subwoofer, The KC62 that plays down to 11hz in a one foot square box. It’s like having two of these awesome subwoofers in each speaker. I don’t own KEF Blades but I have heard them at a brick and mortar store close to me. https://holmaudio.com/This store lets you try stuff out in your home on your equipment for free. No buyers remorse. I hope this helped you out. 

Here is a good list for you:

KEF Blades - Gershman - Dynamakkit - Vivid - Estelon - Ascendo - GT Audio in New Jersey - Vandersteen the new model sevens mark IIs are coming out shortly

Happy Listening

Tannoy Canterbury