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I
I 1 1 1 1 1 1 1
ATTENUATION SWITCH
1
I
1
1 1 1 1 1 1
.""
10
4 0
6 0
W
100
ZOO
400
.00
1 1
Z l
4
S
101
101
FREQUENCY
In21
TYPICAL IMPEDANCE CURVE
FIGURE 3
9 5
m
-
9 0
Z
-
a 5
z
g
80
=
7 5
>
5
7 0
6 5
2 0
M
1 0 0
l W 0
10,000
2 0 , 0 0 0
FREWENCY
I N
HERTZ
TYPICAL FREQUENCY RESPONSE
FIGURE 4
Sound Pressure
. . . . . . . .
Level (SPL)
EIA rating: 48 dB at 9.2m (30 ft)
from 1 milliwatt, equivalent to
97 dB at l m (3.3 ft) with 1-
watt input
Total Harmonic
Distortion
. . . . . . . . . .
Less than 2% at 1 kHz [meas-
ured at 1.2m (4 ft) and 106 dB
SPLI
. . . . .
Phasing (Polarity)
Positive voltage on plus ( + ) ter-
minal (SR11B) or phone jack
tip (SRll6B) produces pos-
itive sound pressure
High-Frequency
. . . . . . . . . . .
Section
.120° radial horn
Horizontal Distribution
.
120" (see Figure 5)
Vertical Distribution
. . .
90"
Directivity Factor
R ,
(Q)
. . . . . . . . . . . .
.6.9 at 2 kHz full octave measure-
ment
Environmental:
Operating
Temperature
. . . . .
- 7" to 43°C (20" to 110°F)
Storage
Temperature
. . . . .
- 29" to 71 "C (-20" to 160°F)
Humidity
. . . . . . . . . . .
SR112B: Moisture-resistant
SR116B: Normal indoor/outdoor
Connectors
. . . . . . . . . .
SR112B: One 2-screw terminal
strip
SR116B: Two parallel-wired
phone jacks
Overall Dimensions
. . .
,400 mm H x 584 mm W x 381
mm D (15% in. x 23 in. x 15 in.)
Weight
. . . . . . . . . . . . . .
SR112B: 17.71 kg (39 Ib)
SR116B: 18.61 kg (41 Ib)
POLAR CHARACTERISTIC
1 8 V
LEGEND
-----
2 0 0 0
HZ
TYPICAL POLAR PATERNS
FIGURE 5
. . . . . . . . .
Construction
15.9 mm (% in.) wood, black
vinyl
covering,
black fabric
grille.
SR112B: All surfaces (internal
and external) and all compo-
nents treated for weather re-
sistance
SR116B: Contains handle and
steel corner protectors.
Supplied Accessories
.
.
SR116B: 15m (50 ft) heavy-duty
cable
with
locking
phone
plugs; grille cover
Optional Accessories
.
.
A1 12A Tilt Bracket
A1 12C Protective Cover
A1 12D Wall Mount Swivel Bracket
A102A 70-Volt Transformer
INSTALLATION
General
I n planning a sound system using the SR112B or SR116B
Speaker System, carefully observe the horizontal (120")
and vertical (90") sound distribution of the units. Max-
imum coverage for source-oriented installations is gen-
erally obtained with Speakers on each side of the sound
source and as far forward as possible, with each Speaker
tilted slightly either downward (for wall- or ceiling-
mounted units) or upward (for floor-standing units). The
angle of tilt (assuming a single Speaker to either side of
the sound source) should be such that an imaginary line
from the center axis of the Speaker runs to the back row
of the audience area. The Shure A112A Tilt Bracket (see
Figure 6) provides complete freedom in the vertical
direction and the A112D Wall Mount Swivel Bracket
provides up to 50" downward tilt and a horizontal pivot
angle of 60 degrees in both directions (see Figure 7). For
"clustered"
installations covering a wide area, each
Speaker should be positioned so that its angle of cover-
age overlaps with that of the Speaker next to it as their
sound output enters the audience area.
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