I have the advantage of having iterated on these. All told I've made perhaps 7 or 8 of them in various configs. I also got very much into baltic birch (and other high-end multi-ply plywood) construction on earlier projects (MAME machines, furniture, etc.) so I already had down the joinery. (And built a number of "normal" speakers before as well.)

So I already some wood-working experience before starting these. Still though, not a thing anyone else couldn't learn to build.