American Acoustic Development M Series - Manual (Page 4)

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.
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