I am looking for a sub maybe two to go in a family room 21 x 20 with one opening going to a bedroom from the family room,Its carpeted over cement floor,What i really like to have when watching movies is that you can feel the subs vibrate you when you hear any deep sounds in the movie,Will you get this in a room that is carpeted over cement?.what kind of subs will give me this effect?,If its a good sub does it actly vibrate you or can you just hear the deep bass,Thanks