I'm certainly no beginner to subwoofers but I have some preconceived notions and I'd like to get feedback from others about them. My current subwoofer is a 12" ported unit from B&W. I'm planning to move it upstairs to the bedroom in order to transform the bedroom system into a 3.1 system and to get a new sub for the family room home theater. Here are my preconceived notions: The bigger the box and the bigger the driver, the louder and deeper the result Ported subs are boomier and less musical than sealed ones Subs are high in distortion but rarely publish distortion figures The room is 3000 cubic feet. The sub I have does a perfectly good job with LFE and to me sounds a little loose, slow and boomy with music. In fact I normally don't use it for music listening because of that. I just rely on my mains which are pretty shy in the bass. I'd sure like get a more musical sub. The B&W sub is about 10 years old and I just don't know if they have improved a lot since then. Are the current ported subs tighter and faster than the older ones? Will sealed subs get low enough to do LFE effectively? Should I be concerned about this at all? My preconceived notions lead me to the solution that, perhaps, a sealed 15" is the way to go. That pretty much doubles the price of a sub and adds a much bigger box to what is a pretty normal sized room so I'd rather get a 12" if it will do the job. I would estimate use to be about 70% video and 30% music. Comments?