What makes a 10 "faster" than a 15? If a ten and a 15 both have the same rated spl levels and same frequency ranges, theoretically, what would make the 15 sound "slower" than the 10? Is "faster" and "slower" a personal qualia thing, a subjective sound opinion, or do the terms apply to something in the figures, like delay or shape of a waveform? What exactly is the definition of punchy as well? What keeps a 15 or an 18 from being "punchy"? Or does "slam" seem like a better qualia word for those sizes of speakers? Just tryin to learn some things.