So JVC has this bad-ass new speaker system using wood cones instead of the traditional paper or poly setup. In order to make them, birch wood is soaked in sake. Yes, sake. This apparently makes the wood malleable enough to form into a cone without cracking. Solid wood has vast advatages over pulp-based paper and acrylic polypropelene. It's internal damping gives the speaker a much smoother frequency reponse while remaining low in weight. These speakers aren't available yet in the US, but it's just as well because they're quite expensive. Though by all accounts I think worth the cost. Currently they're available overseas as part of an executive shelf system with a CD/DVD player.