My room at that time was over 5000 cubic feet.
Let's be clear, I don't recommend the EP175 for movies, not at all, it bottomed out at higher volumes for movies, which is why I moved to the 500. But for critical music listening (and I am not talking about techno or RAP), I liked it much as my EP500.
Again, the M80's handle most of the sound. The EP175 just picked up that last 5% of the bottom end. The 10" driver was very very tight, and accurate.
I would seriously consider two EP175's over a single EP500 for music listening only. This was Alan's recommendation to me also when I talked to him about a music only system.
paul
