Bol972s posts, although sincere, are basically bolcrap. Having heard live music doesn't make you an expert on recorded sound. I listen to, perform, and mix live sound (primarily acoustic instruments) professionally but my opinions have no "special" relevance because of that, and only a self important pretentious bonehead would claim that it does. Recorded sound is a completely different animal unless you set up your rig in Carnegie Hall and sit in the 9th row for all your active listening. Also, the amp signal arrives at a sub's voice coil the same exact time as a main speaker (unless your sub cable is 2 million miles long), speaker cone paper is extremely light and stiff, and the time it takes the paper to get moving compared to an aluminum, carbon, or plastic cone is irrelevant and audibly unnoticeable, regardless of the hype you may have been subjected to. Period. Room sound has BY FAR the largest influence on the blending of a sub, and differences in various subwoofer designs obviously do make them sound different, but the term "speed" as an overused catch-all phrase used primarily by people who are actually noticing other acoustic anamolies having little or nothing to do with cone material...or the time they spent listening to guitars in a room full of people.
