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There are typically three reflective surfaces near each speaker: the floor, the rear wall, and the
side wall. Each of these surfaces produces its own reflection, and hence its own cancellation
and reinforcement. By properly selecting the distances to each surface, we can provide a
uniform and extended bass response. Conversely, improper placement of the loudspeakers
can result in uneven frequency response, resulting in diminished bass quality.
In order to take full advantage of bass reinforcement and to provide the most uniform and
extended bass response, it is recommended that the loudspeaker be placed between three and
seven feet from one of the walls (side or rear), and between five and fifteen feet from the
other wall. The measurements are made from the wall to the center of the 9" woofer cone.
The exact distances are not overly critical, although the two distances should not be within
about 33% of each other.
A good rule of thumb in establishing the lateral position of Opus Ceramic is to apply the ratio
4 : 10 : 4. In other words, the distance to the side wall is 4/18 (or about 22.2%) of the room
width, and the distance from speaker to speaker is 10/18 (or about 55.5%) of room width.