A) This is a very important factor to consider to be able to juice out the full potential of home theater systems. Taking the example of 5 speakers which is the most basic, the setup should be as follows: 1. The front right and left speakers should be placed at 30-degree angles to the couch or where the listener is seated. 2. The left and right side speakers of the setup should be placed at 110-degree angles of the listener's right and left respectively. 3. The center speaker should be positioned in front of the viewer, usually right below the TV.