I agree with audiokinesis. I have used Thiel 3.5's for years, which with their equalizer are flat down to 16-20hz. The ultimate bass system: 4 or 5 of these in an ITU multichannel configuration. Virtually all room nodes are eliminated. Two of them in stereo, because Jim Thiel designed them for optimum sound in a very room-friendly design, can generally be positioned in a room to minimize their room-node response and at the same time, excellent stereo soundstaging..
Equally important, study the basics of sound physics so you know what you are doing/looking for, and if in a general living area, use furniture, curtains, bookshelves, etc to serve as sound modifiers and even psuedo-bass traps. Good smooth bass can be done, but not in ignorance. It requires knowledge and experimentation and a willingness to find the proper speaker locations and then design the remainder of the room layout around that.
Equally important, study the basics of sound physics so you know what you are doing/looking for, and if in a general living area, use furniture, curtains, bookshelves, etc to serve as sound modifiers and even psuedo-bass traps. Good smooth bass can be done, but not in ignorance. It requires knowledge and experimentation and a willingness to find the proper speaker locations and then design the remainder of the room layout around that.