Picked them up at an estate sale actually. My pro woodworker says they are Mahogany. They needed bracing so I added that. 24w x 36h x 16d so near Golden Ratio proportions when the riser is added on the bottom. I am looking to build similar cabinets, maybe see if I can get away with something a touch smaller. Proper height of tweeter then becomes a design consideration.my word, those enclosures are attractive.