4.5x6 is tiny?! ... Maybe for horns ... my room is 4.65 x 3.9 and that's what I call small, but still workable. There is no substitute for a big room though, I'd love to have 8 x 12m but we have to work with what we have. To deal with my small room, I'm treating the buggery out of it. The speakers will go into corners - normally a disaster but I'm designing them to work there, and the speakers will be flush in a big bass trap. So they don't sound like a conventional speaker shoved up against a wall or into a corner, which is usually a sonic disaster. My system would not work at all done "plug and play" style. My horns are coax and inherent to their design is an ability to listen at much closer range than typical big horns. They are also placed to maximise sound stage width and listening distance. There are many things interacting here that need to be understood to make this stuff work. The horns are also designed to reduce the need for many conventional treatments. In fact they would probably work at their best in a very large room. They would probably also work well for someone with a big and difficult room, live and bright, who doesn't have WAF approval for a treated room.