On my receiver, Yamaha rxv-440, it has a setting for room size. Small, medium, Large. Now my room is a living room with a break between it and the dining room. The break is a wall with a doorway and a "window". Now do I count the dining room in square footage? Or do I just measure to where that break is? Because if I count it, it sets it as large and it about 500 SQ ft. Which is bigger than large setting.