Originally Posted by cap'n
Your measurement technique is NOT simple, and not relevent unless your point ist hat we can create decorrelated recordings using directional microhones. Measuring at the blocked ears of a human or dummy head is simple and as relevent as you can get.
The dummy recording is only relevant for that dummy (and one that sits very still and is missing some parts of its body). JJ's miking configuration attempts to capture parts of the soundfield that are perceptually interesting. It may not be simple, but it is relevant.
There is a big difference between the goals of these two recording configurations. In theory, if the perceptual miking config does its job, any human can use their entire auditory system to sample the recreated soundfield to extract the perceptual cues that are unique to them. If done well, the recreated soundfield can be large enough to serve human head movements as well.
Dummy head recordings capture sound that has already been processed by the dummy's particular set of anatomical features, and therefore cannot capture perceptual cues that were not anticipated by the dummy's designers.
The first method attempts to recreate enough relevant bits of the original soundfield so that a large number of humans can get useful information out of it, while the second captures it for one very specific head and body configuration.
Originally Posted by Alimentall
IOW, dual mono bass is essentially undifferentiated from stereo bass, except that the dual mono insures that you get some bass mode reduction assistance which may not happen if the bass all came from a single sub at times.
The effects of stereo bass are spaciousness, envelopment, and externalization, not imaging. When you listen to mono bass recordings (most any pop music recording), the bass sounds like it comes from inside your head, assuming you're using good subs that have low distortion.
edit: just to repeat an important point that's been mentioned several times already: it's very hard to hear stereo bass with commercial recordings because the vast majority of them have mono bass, and those few that do have non-mono bass (ie. decorrelated bass) haven't necessarily recorded it correctly. So think about that before buying a second sub!