I had a brand new Rotel RB-1582 (200 watt amp) and RC-1580 preamp with B&W CM7 speakers and even after break in, there just wasn't any bass. Being unwilling to add a subwoofer, I replaced the amp and preamp with an integrated tube amp. The bass increase was so dramatic I had to add bass traps, even after pulling my speakers away from the wall for a total of 24 inches from the wall.
The other posters are correct in saying you should get a sub IMHO.
The other posters are correct in saying you should get a sub IMHO.