I think I know the answer to the question! Here's why I ask! when I am playing music and I just switch between large and small setting I don't like the way it sounds on the small setting. but I was thinking that I could lighten up the load on my receiver if I set it to small and let the sub handle more of the low end!i'm guessing its doesn't sound as good because the system was calibrated with it set to large! Does this sound logical?