Ian commenting on it.[/url]
I don't see any inconsistency between what Ian and I wrote. He was talking about large rooms and a little playing with a calculator will verify what he says.
In a small to moderate room, you will never need a ton of power, but when your room gets big enough, you will run out very quickly
I am willing to bet that if you move from a 1700 cu. ft. room to a 3000 cu ft room, you will loose a few db of room gain. I am also willing to bet that in a concrete bunker like my apartment, you will gain a few DB due to increased reflection.
I still like my calculator post.