"This kind of generalized analogy runs dangerously close to the Bose 901 edict that says that if you want to best reproduce a concert hall type of sound, then you must design speakers that have similar reflective characteristics"

The idea of using the reflective surfaces of a room to cause sound to reach the listener from many more directions than you get from a speaker that aims all of its sound directly at you has nothing to do with Q's claim to use a speaker box as a resonant cavity to amplify sound which is exactly what the box in a stringed insturment does. This in effect is also what bi polar flat panel speakers like magnaplanar and electrostatic speakers do. They just use different types of vibrating membranes to launch their sound and the specific radiating patterns are different.

The limitations of the Bose 901 IMO having owned a pair for the last 34 years among other speakers is its poor frequency response. This is due to its inability to reproduce the highest octave with 4 inch drivers and in models since series III the lowest octave. My experiments with using additional direct and reflecting tweeters and bi amping them with series one as well as additional equalization has yielded very satisfactory results. I am very pleased with the outcome.

A/N gives little technical information about what they do or how they do it. I don't have any convenient way to hear these speakers for myself so at this point the whole discussion of them seems a hodgpodge of hype and hooey. There isn't even a consistant design philosophy with the K series being an acoustic suspension design and the J and E series being ported. Visiting their web site doesn't help any. It's worse than technobabble. It's just babble.