Wow. Sounds like a nice listening room. I would imagine its filled with goodies, carpet, furniture, tables, etc. I really believe in sound energy. What I mean is the total amount of energy produced by the system minus the amount taken away or absorbed if you will by the room and goodies that are in it. If you want you can try an experiment. Remove at least 50% of the furniture from the room if you can and listen at the same settings. I bet an empty room with Cathedral ceilings will produce more SPL to the ear.
I had to refinish my basement recently and I removed everything except the system and I could not believe the difference. Cheers to TRL and your "BIG ASS ROOM" -:)