Hi all.
I'm new here. I have owned and operated a small Pro Audio company in NZ since 1973. My forte is R and D and product manufacture but this became very difficult for any NZ Prosumer electronics company way back in 1985 when our govt moved the goal posts in a draconian manner, thus destroying manufacture as we had always known it. Such was their utter stupidity as they could have done things differently in a way that could have worked for everyone involved.
However, since then I have engineered a 6 neo magnet high frequency planar driver, primarily for high performance applications but shelved it prior to the Covid saga for various reasons, one of which were problems acquiring a suitable diaphragm material. We initially tried DuPonts Kaladex which although did tick some of the boxes, the mass was to high and the product rolled off at around 17kHz. I have since reviving this project, learned that ideally we should be testing polymer film, gluelessly laminated to aluminium foil, at 25 x 25 microns. Glue melts which is why its not wanted. High temperature resilience is essential to accommodate the very high SPL's these things produce. Can anyone collaborate this material type and point me in the direction of a suitable supplier for this or equivalent material please? Any assistance would be much appreciated. Please ignore this post if you haven't a clue what I'm talking about.