Interesting, this sounds familiar from my day job. Seems that textrem (ultra thin carbon fiber sort of tapes) driver diaphragms are made by Composite Sound. I wonder if there is something worth in their claims:Material Trend: TeXtreme Everywhere
One of the things I noticed most was the rise of TeXtreme membranes. Borellsen had them, even Gryphoon did too. I keep spotting this material more and more. Looks like it’s becoming the new state-of-the-art membrane material.

Technology – Composite Sound
The high stiffness and ultralight weight of the engineered Thin-ply Carbon Diaphragms (TPCDs) enable a wide range of pistonic motion, while the concept of distributed break up ensures a controlled break up behavior with low distortion.
