ive seen this thrown around a lot that some woofers get lower than other... im not talking size wise more so company wise... I was just told that the atomic apocalypse 15s dont play well under 40hz even if they are built for a daily setup... I said that it was more enclosure dependent than anything... I know that some woofers may be more efficient or have a lower fs, but I would think that the enclosure will determine what the woofer can play?? am I right or wrong?