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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

Showing 2 responses by rhljazz

rhljazz
1,249 posts
 
Check out Green Mountain Audio. They use cast marble cabinets that are supposedly extremely rigid. Their bookshelf monitors alone weight in around 50 lbs each! There is supposed to be nearly zero box loss contributing to an incredibly clean and coherent sound.
Djembeplay (Threads | Answers)

Even marble flexes. One of the first mods GMA made to the Diamante was adding aluminum ribs bonded to the inside of the cabinet to reduce flexing.
rhljazz
1,249 posts
 
My comment wasn't made to disparage GMA in any way. I just wanted to point out, that a material that one would not think of as being able to flex/vibrate, can do so much to one's surprise. To GMA's credit, they found a problem and fixed it. I have great respect for their designs.
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