Speakers made with unusual cabinet material


There were the Celestions with their Aerolam cabinets. The Green Mountain Audio speakers that had a sort of cast marble cabinet. Were/are there other speaker manufacturers that used some kind of odd or exotic materials for the cabinets? Are there speakers with real wood cabinets (rather than veneer?)
hodu
Some Thiel CS-6s had concrete front baffles. Magico uses 6061 aluminum in their speakers. I have a pair of Green Mountain Audio Europas in my room right now and they seem extremely heavy, dense, and inert.
Sebrof,

X material and M material is just a fancy word for Phenolic board.

Phenolic Board

It is not magic as some want to believe. It is however probably a good material choice for a speaker enclosure because of its inertness, but its not the only one. As previously stated is all a matter of implementation.

Good Listening

Peter
mmm implementation of Wilson also their materials are the primary cause of their horrible sound.
Wilson "horrible sound" = problem(s) upstream !!! Start searching for what is being exposed in system or room !!! IMO!!!....YMMV !!!!
Wilson Benesch use carbon fibre and the veneers done by the guys who make dashboards for Bentleys! Swish.