That being said, i'm pretty sure teh audiokinesis lines also belong on this distinguished list, have a look guys :
expecially the rethm prism should qualify for this list at 93 db w m sensitivity and 900 watts peak power handling and at 2300 bucks a pair assembled not at all that crazy
AudioKinesis is on the list with the Thunderchild, a pro audio speaker of theirs. This is a company that I hear about once in a while when people are asking about high sensitivity speakers, so it's still been on my mind to go back and add more of their models. Your suggestion pushed me to do this now!
The Rhythm Prism is interesting for several reasons. It subscribes to controlled directivity practices, with a 90 deg horizontal pattern and control down to 1.4kHz. Not quite as low as the Pi Speakers or SEOS designs. It is designed for corner placement, so maybe they're making up for loss of sensitivity in the bass by a eighth-space placement? The shape of the cabinet actually fits it into a corner. It loses sensitivity I suspect due to the deeper extension to 42Hz.
They also subscribe to using pro audio drivers for greater sensitivity and lower distortion, like the 12" neodymium magnet woofer used in this speaker. They do mention power compression of less than 1dB at 110dB (don't know at what frequency or for how long), to their credit.
Pi Speakers also has the Corner-horn line, but with those the woofer is also horn-loaded.
Since they report the sensitivity as "93 dB at 1 watt at 1 meter calculated, based on the Thiele/Small parameters"
and they intend the speaker in the corner, I wonder if this sensitivity is off by 3 to 6db of what would be a more "normal" ground-space measurement? The fact that they have that extension also suggests to me such. If so, I would report their ground-plane as at most 90dB, which is kind of a medium sensitivity.
Edited by Eyleron - 1/9/13 at 11:55am