02-21-10: DertonarmAbsolutely, I agree. I'm just pointing out that accurate reproduction of low frequencies(actually all) is probably pretty rare without proper room dimensions and/or extensive acoustic treatment.
we can still strive for perfection in audio reproduction even if we will never approach it...Not sitting in an acoustical perfect room should in no way keep one from trying to bring or lure the best possible performance from its equipment.
What we perceive to be "clean bass" and what actually is, can be two different things. Sounds like Mepearson has done of a good job of getting his room out of the way of the music.
From personal experience, I had a hell of time trying to tame my old 25'x16'x8'living room(just for music) by speaker positioning alone. I had free will to place everything wherever I wanted in the room(being single and all). And that was with dual subwoofers placed non-symmetrically around the room. I never really won the acoustics battle.
After looking a photos of a lot of professional reviewers rooms, I have to seriously question their ability to discern individual audio component frequency reproduction anomalies from their acoustic environment. And when they talk about the accuracy, or inaccuracy, of low frequency reproduction...Well, the brain is obviously a very powerful machine.