In that price range you may want to consider the Intuitive Design Denali's at $65K. I own the Intuitive Design Summits, and they are phenomenal. My room is a little smaller, but not that much. The Summits have very good bass, but do roll off around 40 hertz, so I have them supplemented with a Rel Storm 3. But to give you an idea of their low end output, I've got the Rel crossover set at 27 hertz to avoid overwhelming bass.
I wrote a review about the Summits. If the Denalis are as much better than they are as the price suggests (Summits are about 3500, stands about 1500, total ~5k, plus Stillpoints), then they must be breathtaking. The Denali speakers are said to have great dynamic range and phenomenal soundstaging. If spending that kind of money, I'd certainly give them a listen.
I wrote a review about the Summits. If the Denalis are as much better than they are as the price suggests (Summits are about 3500, stands about 1500, total ~5k, plus Stillpoints), then they must be breathtaking. The Denali speakers are said to have great dynamic range and phenomenal soundstaging. If spending that kind of money, I'd certainly give them a listen.