Stereo Integrity the company behind Obsidian Audio have been developing a shallow 6.5" mid/woofer. The mid/woofer speaker has rumored to be less than
2.36" deep,10mm xmax, low inductance, an solid copper shorting
ring, utilize an XBL^2 motor for linear BL. With an 6 layer voice coil, weather
resistant/treated paper/wool cone, rubber surround, cast aluminum
basket, neo disk magnet motor.
That information was released around July. And, it seems as if Stereo Integrity has keep their word. But, with some chances. As of recent Stereo Integrity has updated, and confirmed the stats on this prototype. This shallow 6.5 prototype stats have now been updated to an dual 4 ohm voice coil, 2.3 inch mounting depth, and rated for 9mm xmax.
Stereo Integrity even released a small excursion video of the prototype. Which can be viewed below. No pre-order information, or pricing has been released yet on the mid/woofer speaker. But, a video of an excursion test has been released. That can also been seen below.