Center speakers should NOT be place closer from the audience than the main speakers. Center speaker and main speakers should be kept in a straight line, preferably at the same height.
In order to reduce the effect from speaker placement and create a wide spread and realistic sound field similar to that in a movie theater and recording studio, hang rear speakers on the walls a little behind the audience and higher than ear level of sitting position. Speaker will face the listening environment; not the audience. Placing the rear surround speakers too much in the front will reduce the background effect; and too much on the back will also affect the surround signal and its integration with the entire system.
We normally do not recommend placing rear speaker directly behind the audience. The subwoofer can be placed virtually anywhere in your room without affecting the stereo image of your main speakers. Placing the unit in a corner of the room will yield the greatest bass output but may not provide the best sound, as this position will cause maximum room mode resonance. You can start with this position and then move the subwoofer to different areas until you find the sound satisfactory. The best method is to try different positions. Keep a clearance of 100mm/4" from the wall or furniture to provide best performance.
Please bear in mind that your room settings and environment can greatly affect total sound quality. The above only provides some general guidelines. If necessary, please consult a professional installer to achieve best result of your system.
Large amount of exposed hard surface in the room can cause reflection so that the sound may appear to be harsh or dialogues will appear unclear. If you experience this, try using soft interior objects such as area rugs or curtains to absorb some of the reflective sound waves.
