If anyone subscribes to the AudioXpress "Audio Voice" newsletter,
there's an interesting interview with the guys from Purifi Audio there.
This is a company with some real big engineering talent. A Basic rundown
of what they have going on can be found here:
the interview I gathered that in the research conducted by these guys
over many years, they've determined that variance of inductance over the
voice coil movement range is of utmost importance over anything else.
They've got some interesting new amplifiers in the works, and a very
impressive looking 6.5" midwoofer. They also are including a fair bit
more data in their product literature than what you usually get from
other manufacturers. No mention of price, but I'm sure it's top dollar.
Since the interview is included in a free newsletter, I was going to repost it here, but I get errors about the body of the post being too long.