Cool, thanks. I am trying to fugure out why the designer recommends 2" wedge foam or 2" OC703 as a preferred alternative. I've never seen speakers with such robust damping. Isnt the purpose to artificially increase the volume to extend response lower? Seems as though in this case its being used to absorb the woofer backwave and reduce internal issues. I wonder if a different cabinet shape would change things. With so many builders doing things slighly differently with damping, its probably safe to assume its less critical than other factors to the end performance.

I'm starting to realise all of these decisions added up would make a design like this impractical for production without some compromises to reduce weight and cost. It makes me wonder what the retail cost of these would have to be to make it commercially viable, and if anyone would buy them when Axiom and others would be cheaper and perform similarly good. I wish someone with M100s was nearby.