What would you guys reccomend. I need to install speakers that sound farily good and are loud enough in a 10x5 meter room (approx). It will obviously need to have very long cables, and it needs to be loud! Very loud! There could be like 30 people in the room, and it needs to still be loud enough.

I was thinking of the logitech X-540, but I don't think the cables are long enough, and not sure it will be loud enough.