I was just wondering... if lower Q subwoofers (like .5-.577) have better quality bass with less group delay, then what's wrong with having something like a Q of .4? I've read of low-Q drivers like the Maelstrom and BPD-03 drivers being turned away from IB use because they have 'too low' a Qts. Wouldn't a low Q provide a slower rolloff and hence deeper in-room bass? Wouldn't this slower rolloff cause a flatter phase response and hence, lower group delay? I'm a bit confused, since I've heard of both Q=.5 and Q=.577 as being 'critically damped.' What does that mean, and why would sound quality decrease below such a Q? As a side question, what is the problem with having an overdamped (way low-tuned) vented enclosure? Doesn't that emulate the characteristics of a low-Q sealed box? (In other words, I would think that the low tuning would cause the port output to 'mess up' the quality in the normal bass region less.) Ack thats a lot of questions, but this is something I'm pretty confused/curious about. Even though I have little chance of applying the knowledge anytime soon.