Not just for tweeters. Those with damaged eardrums can now have a high fidelity upgrade, straight out of the loudspeaker design book!
http://www.abc.net.au/news/2017-05-...hers-using-silk-worms-to-fix-eardrums/8567238
http://www.abc.net.au/news/2017-05-...hers-using-silk-worms-to-fix-eardrums/8567238