My point was, he had maybe an under powered amp and the fact the speakers were placed so far off the back wall.
Amp power is a non issue. In an average room, at a distance of 10', to get to 85 db, you will need somewhere in the range of 4 watts. 85 db is louder than most people listen. Note that this takes into account room gain.
If you want another 12 to 15 db of headroom you are up in the range of 30w. Note that would give you peaks in the range of 100db. Push the average listening level up to 90db (hearing damage territory) and you are up to about 90w.
Back to the short answer. Power is not an issue.
Well, unless you are out on a dock in Muskoka and you wanna hear the music from the other side of the lake
