I've seen a few companies that use precision molded concrete. I'm sure it stops resonance, but it is also difficult to work with and for a large floor speaker it makes the weight nearly unmanageable.
I remember some speakers from one of the "shows" a while back that used a concrete enclosure for the woofer, and an expansion horn created from trans-laminated hardwood for the tweet/mids. The stereophile writer said he wasn't even going to ask how heavy they were.
Joe
I remember some speakers from one of the "shows" a while back that used a concrete enclosure for the woofer, and an expansion horn created from trans-laminated hardwood for the tweet/mids. The stereophile writer said he wasn't even going to ask how heavy they were.
Joe