I think I understand what you mean by bloom now. Thank you for explaining. And get this, I agree with you that a simple measurement can't capture it. In that sense, it is psychoacoustic in nature.
However, bloom, imaging, soundtage, and acoustic space are completely secondary to the nature of accurate sound reproduction. For, if bloom exists as a musical quality you can perceive after it has traveled the length of your signal path and the air between your speakers and your ears, then it must first be present in the recorded material and on your playback medium of choice, be it CD, LP, or whatever.
Accurate playback is not a voodoo science that pulls musical essence from the ether and infuses it into the signal path before it is converted to sound waves by your speakers. Accurate playback is a simple matter of cleanly converting digital to analog (a trivial process with today's technology), cleanly amplifying it to the desired listing level (again, trivial), and then cleanly converting it into acoustical energy at the speaker (not as trivial, but readily available with speaker such as our beloved Axioms). (By clean, I mean not adding or subtracting anything from the source material.)
