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 • [email protected] • www.jwd.com
The Mark of the Professional...
Mounting Suggestions
Basic mounting hardware is included with each sound column. The hardware for
models SC-30,
SC-50, SC-70
and
SC-100
consists of (1) hanging bracket for surface mounting and of
(2) a henge, chain and hooks to permit forward tilting (Figure 3) for more
precise beaming of the coverage pattern. If the column is being mounted in
a location that requires the cabinet to be swiveled sideways as well as tilted
to properly position the sound intensity, an optional mounting hardware kit
(model NSC-BR) shown in Figure 4 is available.
Transformer Installation
The impedance of each SC Series sound column is indicated in the table above. However,
transformers may be readily added in the cutouts located at the back of the cabinets except for
model SC-408 which requires internal installation.
Note
: If intended to be used in 25V or 70V instal-
lations at the time of purchase, transformers may have been installed at the factory. Therefore, the
impedance of the columns should be checked before applying power from the amplifier.
Model SC-408
hardware consists of a henge, chain and hooks to permit
forward tilting (Figure 3). Optional
hardware kit (model SC-
BR) shown in Figure 5 is available if
the cabinet must be swiv-
eled sideways for proper alignment.
The directional coverage patterns of sound columns require careful alignment. One technique is
to use a carpenter’s square to aim the “on-axis” beam to the desired location. Another widely
used technique is to use a mirror and flashlight. Regardless of the aiming technique, a sound
level meter should be used to verify the resulting coverage.
Figure 3
Figure 4
Figure 5
Mounting hardware must be securely screwed into at least one wall stud
using screws or bolts rated with the loadbearing capacity of the hardware
supplied by the manufacturer.
Note:
Sound columns, or other loudspeakers,
should never be mounted
directly behind and near level with a microphone to avoid feedback.
Model
Power
(watts)
Impedance
(ohms)
Coverage
@ 1 KHz
Sensitivity
(db @ 1wm)
Speakers
Size
Shipping
Weight
Frequency
Range
SC-50
SC-70
SC-408
50
70
50
130-7,000 Hz
±5 dB
105-3,500 Hz
±5 dB
80-9,000 Hz
±5 dB
12
16
8
120° Horizontal
20° Vertical
120° Horizontal
20° Vertical
120° Horizontal
40° Vertical
99.7
102.0
98.2
Six 5”
(DS-505)
Eight 5”
(DS-505)
Four 8”
(DS-810)
7
³⁄₄
” W x 40
³⁄₄
” L x 5
⁵⁄₈
” D
7
³⁄₄
” W x 52
³⁄₄
” L x 5
⁵⁄₈
” D
11” W x 36
¹⁄₄
” L x 11
¹⁄₄
” D
33 lbs.
44 lbs.
48 lbs.
SC-30
30
120-13,000 Hz
±5 dB
8
120° Horizontal
40° Vertical
98.5
Four 5”
(DS-505)
7
³⁄₄
” W x 28
³⁄₄
” L x 5
⁵⁄₈
” D
25 lbs.
SC-100
100
140-8,500 Hz
±5 dB
12
120° Horizontal
20° Vertical
97.3
Six 5”
(DS-510)
7
³⁄₄
” W x 40
³⁄₄
” L x 5
⁵⁄₈
” D
34 lbs.
