Granite enclosure

I have my own full lines whether it be bookshelf Tower center speaker and subwoofer the material is 2 cm basically 3/4 in the weight varies from 60 lb all the way up to around 400 lb but the enclosures are immovable they do not flex they do not resonate they do not color the sound but if you're needing something to a certain size and parameter if you're using certain drivers or tweeters or subwoofers I can quickly design enclosures for any of your needs

If you want to know what kind of prices they are research acora except I am here in America akora is Canadian based so they would be more affordable and no tariffs it all depends on what material and color you're looking for and design prices are comparable and competitive with focal Wilson audio b and w etc accept the design is variable and your input makes them customizable

In other words, very expensive.

Expensive sure but less than acora or focal or Wilson audio considerably but with better performance and durability