I want to set up a blue ray player and a surround sound system. I have been reading a lot and keep hearing that the size of the room matters when it comes to buying a system. Home theater system for a small room and component system for larger rooms. How do I determine what is a large room and what is a small room. I live in Florida and have an open floor plan with vaulted ceilings.( living room, family room, kitchen and dining room all under the vaulted ceiling ) The family room is were the system is going. It has 3 sides the 3ed is open to the rest of the house. It is 20' deep by 11 1/2' wide. The TV is a Panasonic Viera TH-46PZ85U. Any help would be greatly appreciated.