I took the easy way out. I turned one on its side and hooked it up. I walked around in front of it. Did not notice any problems with the sound. I suspect if you have a wide room you might want to turn the horns horizontal. I have never seen one but the original design had the horns in the verticle configuration (Verticle Cornwall). The way my room is arranged, I'm almost sitting directly in front of it anyway. I ran this question past Bob Crites and he did not think the horns would need to be turned either. All that said- I like your design.