There's quite a bit of info available at Talon's website (www.talonaudio.com). You can direct specific questions to them at: info@talonaudio.com. The following is taken from their website: "The Khorus represents our current reference in our technology. The Khorus utilizes a 10" driver configured with our patented group phase technology. Group phase allows the 10" driver start and stop effortlessly by exhausting the back wave pressure from the rear of the driver. Our compound tweeter uses a 1-1/2" cloth dome tweeter from 2200 Hz - 13kHz. The tweeter naturally rolls off at 13 kHz. We then roll in our 1" titanium super tweeter which goes up to 35 kHz. The compound tweeter simply works less giving effortless high frequency extension. We refer to the Khorus as a 2.5 way because there is no low-pass on the dome mid/tweeter." I read through their entire site one day, and I'm pretty sure they do not use the Esotar tweeter (maybe you were thinking of the Merlin VSM-SE which does). Their drivers are made of paper, but that's all I can remember right now. Good luck.
