As I sit bored at work, I am wondering if it would be possible to mount a subwoofer (or multiple) in your chimney that would act as an infinite baffle? When you think about it, your chimney is better braced than any enclosure would ever be and the air requirements well, are pretty much infinite. Now I'm not saying I'd try this by any means. I'm just wondering if this would conceptually work. Any takers?