I've said this before in another similar thread. Somewhere in China there is a factory that cranks out hundreds of thousands of these curved enclosures and anyone who orders a sufficient minimum quantity can customs-spec the cut-outs. Baltic Birch ply? Not a trace. High quality MDF? Nope. The material used is cheap chipboard. How do I know? I know because I used to own a pair of Acoustic Zen Adagio's made with a variation of the same enclosure. Same exact automotive spray paint finish. With the Adagio's, unlike with this speaker, all one had to do is peer into the front-facing port to see the rough finish work and nature of the materials. I also experienced the cheap chipboard when I resorted to rocking the top heavy gangly speakers on the outriggers that I had installed. The threaded inserts broke out of the bottom of the enclosures revealing more crumbly chipboard. There are lots of stories to be found if looked for of how vulnerable these enclosures are to moisture-they will essentially decompose if exposed to water, not that water is healthy for any loudspeaker enclosure. Btw, John of Van L Speakerworks in Chicago makes his own line of loudspeakers using the same enclosure.
There is a concurrent thread right now in this forum about the difference between very expensive loudspeakers and moderately priced ones. This is one of the key differences. Does cheap enclosure construction have a significant impact upon ultimate sound quality? Probably not. Until the drivers work themselves loose or they get subjected to any significant trauma in shipping or otherwise. I don't fault Walter or Robert Lee or John L or anyone else who uses this enclosure to render best bang for the buck loudspeakers. But don't be fooled by the fancy curved exterior and paint job. This is not artisanal work by any stretch of the imagination.