I am actually hoping the monsoon system isn't over board on the bass. The subwoofer doesn't look particulairly huge, which I'm hoping should help keep it more controlable, tight and snappy.
Overblown booming bass is a lot of fun every once and a while when listening to rap, but it's hardly accurate or considered "good" sound by true audiophiles. A lot of people love to crank the bass up in their cars and all they really get is mono tone thuds. Ever notice how all cars with lots of bass all sound exactly the same driving by, no matter how big or small they are? The car itself acts as one big vibrating echo chamber which tends to eliminate smooth bass throughout the full bass frequency spectrum. All you get is a very condensed bass frequency. It's not how the music is supposed to sound or how the artists usually intended it to sound. You and I may like it, but that doesn't make it accurate (or good).
Typically (but not always) a "flat" response provides the truest most accurate sound. I have found that in most cars I've seen with "normal" everyday systems, having the bass turned down (or no higher than around mid-level), and turning the treble up slightly produces the flatest response. This will obviously vary from system to sytem, but I've found it's a good place to start.