no only is the room size important, but the number of doorways, or openings that open into other areas can have a main factor.
Secondly the type of walls you have will make a difference. If you have drywall, celoltex under the drywall helps.
I bought my current house just to get the living room which is 25 x 30 with 9 ft. ceilings. It has plaster walls, which really cut down on the sounding board effect you get from drywall.
And with a larger room you'll need plenty of speaker and plenty of power. You may want to consider using a pair of subs to help out the bottom end. In a large room, its really tough to properly load the whole room equally with all the frequencies. Before you do anything though, I would suggest buying a sound pressure level meter, a test CD adn take some measurements so you can see where you are at.
Secondly the type of walls you have will make a difference. If you have drywall, celoltex under the drywall helps.
I bought my current house just to get the living room which is 25 x 30 with 9 ft. ceilings. It has plaster walls, which really cut down on the sounding board effect you get from drywall.
And with a larger room you'll need plenty of speaker and plenty of power. You may want to consider using a pair of subs to help out the bottom end. In a large room, its really tough to properly load the whole room equally with all the frequencies. Before you do anything though, I would suggest buying a sound pressure level meter, a test CD adn take some measurements so you can see where you are at.