DIY speakers of solid/reclaimed wood?

I would think the biggest problem would be cost. Thick dense old growth walnut is very stable. Stable enough to be the preferred wood for gun stocks. But nice, dense tight walnut is insanely expensive.

When I was considering building a pair myself my plan was to make the structure out of MDF and then "skin" it with local red cedar, which I already have. I built the countertops in my cabin with it. It is old growth and quite hard. Very pretty with tongue oil or even just mineral spirits. Would not use it by itself though.

I still might build a pair just for the fun of it. But that will be a ways down the road after a few other wild hares have been tamed.