We're very adept at distinguishing real sounds from reproduced one. We've built up a reference memory of sounds, over our entire life, ..and transducers, attempting to recreate these acoustic event really do a poor job at realistically illuminating the room's environment, in a similar manner in which real sound occurrences do.
Also, our systems can never do any better than the source material we feed them. Most recordings are enjoyable, but realistic? The pan-pot imaging offers a high level of control, but only the best attempts with minimalist mic techniques begin to capture an event correctly.
Then there's the loudspeakers, and all the non-linearity that they impart to the process. The best case scenario is a window, listening into the recording event. The manner in which a speaker polar response launches the energy is anything but realistic.
Just the simple limitations of converting electrical energy/impulse into acoustic energy that resembles the actual event. Detail is obscured, no question. Then, LRSE (latent release of stored energy) exposes us to multiple hits of the same impulses, smearing the detail. Open Baffle, and Infinite Baffle help in this regard.
Our boundaries distort the wave launch, walls too close, etc. Another thing, a loudspeaker needs to get out of the way,... just the physical size is often an issue. They need to be small relative to the wavelengths being reproduced. Many of these issues are intertwined, but the physical characteristics and shape interfere and prevent a realistic polar response of the point source.
Also, they need to project their energy uniformly throughout the entire range of the loudspeaker. This reflected energy needs to be spectrally similar to the direct sound. For us to psycho-acoustically accept the playback, these reflections, the reverberant field ... needs to be delayed, or low enough in level to allow the direct energy to be heard... as two distinct events.
Another issue is the way the room's decay characteristics, and treatment needs are so different from one another. The LF needs significant damping, yet the MF/HF needs to be retained to maintain some life sense of envelopment. But many enthusiasts do the opposite, they overly damp the MF/HF, and the LF decay runs wild. Exactly the opposite of what needs to be done.
Flat, Deep, Clean, Linear, and Loud
Active 16.8kw, 7.3 system
(3)Seaton Cat12C up front, (4)QSC K8 sides/rears
(2)Seaton SubM-HP, (4)18" IB