Synthetic diamond is becoming cheaper and cheaper and will continue to do so, until it’s relatively affordable for any given purpose.
Comes a day when it’ll be efficient to produce, say, a 12" woofer out of diamond. Can it be bested? Will it be the end of materials science development for driver cones?
Since diamond has the highest possible Young’s modulus and isn’t inherently heavy (and can be made as thin as wanted anyway), could there possibly be a better solution for a mechanical driver? Will we be left developing the optimal surround materials after diamond becomes “cheap”? (Might we also find the best surround materials from the family of carbons…?)
The driver development industry’s money has to go somewhere even after the best materials are found, so might diamond eventually shift the development from mechanical drivers to, say, plasma technology?
I sure hope so, given the potential of plasma drivers. While they already exist, they’re inefficient in all means of efficiency. And there’s no available plasma midranges yet! Imagine having the vocal range covered by a single massless driver! While we’re at it, let’s also imagine a plasma subwoofer that takes up merely as much power as New York!
Discuss the future of audio with the idea that soon enough we’ll have “cheap” diamond as a commodity.