I've yet to come across any speaker that con produce bass as tightly controlled as hi-end headphones. All speakers I have ever heard had serious issues with room resonance interfering with bass linearity. I've yet to hear a woofer able to create sub bass as tightly as hi-end cans also - the physics of moving a giant cone at high amplitudes, I believe is the main culprit. I'm sure there are stupendously expensive bass drivers with stupendously powered amplifiers out there that can match, though I've yet to hear one in my experiences. Chest thumping bass can produced by any large cone moving in sufficient amplitude and frequency, regardless of how tightly controlled the bass transients are.
Prior to my experiences with the LCD2s...I never believed it was actually possible that current audio reproduction technologies could reproduce, with tonal, timbral and amplitude accuracy, the music from an Italian V12, German V10 or a Detroit V8.