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N E W T E C H N O L O G Y
O L D R E L I A B I L I T Y
J.W. Davis & Company
• 3030 Canton Street • P.O. Box 710219 • Dallas, Texas 75371-0219
Sales 800-527-5705 • Fax 800-388-9106 • Corp 214-651-7341 • Fax 214-939-0328 • sales@jwd.com • www.jwd.com
INSTALLATION INSTRUCTIONS
SC SERIES SOUND COLUMNS
Sound columns (also known as line arrays) are speaker systems specifically engineered to meet
the special acoustical characteristics of installations that have highly reflective surfaces and/or
low ceilings. In these circumstances, the objective is to reduce the excessive reverberation that limits
the required sound amplification being attained before acoustic feedback is encountered.
The unique coverage pattern of the columnar speaker system, shown in the idealized drawing
below, reduces the undesired reverberation by concentrating the sound pressure in the listener’s
area and by attenuating the reflections produced from the more reflective ceiling and/or wall
surfaces. Therefore, correct placement and direction of the speakers are
critical for best performance.
In the typical installation, assuming that the room is rectangular shaped, a
single column should be placed in a center-
front location. If the microphone position is
on the long side of a rectangular room, two
columns should be used that arespaced
midway between the microphone position and the side walls.
The minimum height should be slightly above the head of any per-
son standing and speaking into a microphone (See Figure 2). The column should be tilted down-
ward so that the center of the column is aimed at a point approximately two-thirds of the distance
of the audience when seated. This allows the listeners who occupy the front rows to avoid exces-
sively loud sound while permitting listeners located in the rear to hear comfortably.
for
Figure 1
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090717171
Figure 2
