Speaker cabinet materials.


Just wondering what are some of the materials used in building cabinets for speakers? We all know of mdf and solid wood, but how popular is aluminum? Magico and Piega use it. Are there others that use aluminum? And what other materials are used? What about acrylic?
Acoustical wool and mass loaded vinyl is used inside, what else is used?
pedrillo
I think the Ballistic Ceramic (compression wrapped in Kevlar) of my Cerious speakers is an ideal material - it is rigid yet lossy, and requires no internal damping materials. Wrapping ones knuckles on the cabinet is fascinating - the impact from your hand is completely absorbed.

There is a quite a bit of information on their site about the materials used - and the cost is quite reasonable as well.
Pedrillo, Waterfall Victoria Evo is a speaker made of glass, looks terrific and has rave reviews in French Stereo magazine.
the website is waterfallaudio.com. You can see all reviews. Launch in US in may.