Really kind of surprised at some of the nay-sayers on this thread. I may need to reword some of my original points.
Point 1: The room and speaker placement choices act like tone controls. That's not all they do, but this is a very important point. The size of the room and the speakers in them play major roles in the perceived balance between bass, midrange and treble.
Point 2: Balance is what matters, not necessarily absolute levels.
Point 3: I've heard modest 2-way systems with ~ 7" woofers transformed by room treatments in smaller rooms. This isn't just theory, it's practical experience that good room treatment was a wonderful idea.
Point 4: There are other ways to solve your lack of bass, including of course adding a subwoofer. This thread is not trying to claim there is only one way to deal with an issue, but I specifically asked the reader to "think about" room treatments early rather than late in their process.