I have a friend who wants a sub that crushes his chest with boomyness durring movies. He has a large room (L shaped about 4300 cubic feet) with an open staircase. Budget is 1k. IB is an option but I dont know if thats the type of bass he is looking for. I think something more like a bass horn or a sealed box with PRs. If anyone has some suggestions please let me know. I know its not the standard request for an HT sub but its what he likes so I might as well make him happy.