From reading posts of hardcore subwoofer users, it is easy to get subwoofer setup wrong and requires more than a little effort to get right. The results should not be plodding or boomy bass, rather it should lay the proper foundation for music and even help the mids and highs as your mains are freed up to produce only those frequencies. And the results should be spectacular! I believe many use technologies such as DSP to help with integration. In addition, multiple subs are used (2-4). These additional subs do not add more bass as many think, they are there to tame the room (canceling bass in some parts and filling in null points in others). Basically, a 2nd, 3rd, or 4th subwoofer will smooth out bass response and I believe even negate the necessity for bass treatments in some cases.