Curiosity got the better of me so I did the comparison of RAAL vs OW1 as described in post #290. So the OW1 was about 6 inches above the RAAL, and WOW1 speaker tilted down slightly so that I was listening to the OW1 axis about 10' away. Playing pink noise high-passed at 4KHz and gain compensated so they both played at the same level.
I was very surprised; they sounded very different. The OW1 sounded like it had much more very high freq content, and also gave me the sensation that two frequency bands were playing, as if there were a dip between (could just be how my brain processed having more high-end energy?). The RAAL sounded like a single continuous band of noise with less high end compared to the OW1.
This is opposite of the previous impression I have had of the speakers. The BMR with the RAAL I have felt has more sparkle. But this plays in a larger room than the OW1, so that probably has something to do with it.
On dispersion, horizontally they both seem to go all the way to about 90 degrees, just moving around and listening with my ears. But vertically the RAAL falls off fast off axis, of course.
Here are moving microphone measurements, about a one foot box at the listening position. This is with the compensation for pink noise slope, so flat horizontal would be the ideal anechoic.
As for RAAL magic, I have no idea. I think I must just be hearing spectral difference more than I would expect to notice.
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