I believed the phasing matter definitely existing in the complete audio chain from recording venue to our ear. To investigate the correct phase issue may need a great amount of "technical" experiment, intensive listening and perhaps further probing to recording industry personnel.
However I like to treat this seriously. To ensure the finding is concrete and general, the phenomenon must be proven on known phasing system.
Do you actually know your electronics and loudspeaker phase correctness?
Some loudspeaker has its tweeter inverting connected in order to obtain a better phase coherence with the woofer because of its higher order crossover network introducing phase shift probably up to 180 deg out of phase at crossover point, that make things much more complicated.
The possible outcome would be like that: if for say four guys own the above loudspeakers individually, for say again, the recording phase issue finding from the B&W guys might different from what by Proac and Martin guys. But might be similar to the Audio Physics guy.
However we would at least verify the fact on reverting phase.
