I was surprised to see this title about the Mark Audio 12P. It just so happens that I have built a small set of folded horns and am using this very driver. In short, I couldn't be happier with the results. I wondered if the 12P would be bass shy just because of its size, but in fact it is a very capable driver. The speaker cabinets remain unfinished except for basic use in the house until the weather gets a lot nicer. I used 1 1/2 box elder for the baffles, 3/4" MDF for the cabinet, and will cover most everything with 1/2" baltic birch plywood. Not sure what the tops and bottoms will be using, but i have time to think until spring.