Shure BETA 58A User Manual page 2

STAGE MONITOR & P.A. LOUDSPEAKER PLACEMENT
For maximum rejection of unwanted sound, place the
stage monitor(s) or P.A. system loudspeaker at a 60 angle
from the rear of the BETA 58A, not directly behind it. See
Figure 1. Always check out the stage setup before a perfor-
mance to ensure that microphone and monitor placement is
optimum.
MONITOR
180
LOUDSPEAKER(S)
120
90
0
RECOMMENDED LOUDSPEAKER LOCATIONS
FIGURE 1
SPECIFICATIONS
Type
Dynamic (moving coil)
Frequency Response
50 to 16,000 Hz (see Figure 2)
NOTE: The curve below shows on-axis response at a
distance of 2 feet from a uniform sound source. Your
response may vary, depending on microphone position.
+10
3 mm
(1/8 IN.)
25 mm
(1 IN.)
0
51 mm
(2 IN.)
–10
0.6 m
(2 FT)
20 50 100 200
TYPICAL FREQUENCY RESPONSE
FIGURE 2
Polar Pattern
Supercardioid, rotationally symmetrical about microphone
axis, uniform with frequency (see Figure 3)
o
180
o o
150 150
o
120 120
o
90
–20 dB
–15 dB
o –10 dB o
60 60
–5 dB
o o
30 30
0
250 Hz
500 Hz
1000 Hz
TYPICAL POLAR PATTERNS
FIGURE 3
P.A. SYSTEM
LOUDSPEAKER
120
500 1,000 2,000 5,000 10,000
o
180
o o
150 150
o o
120
o o
90 90
–20 dB
–15 dB
o –10 dB
60
–5 dB
o o
30 30
0
2500 Hz
6300 Hz
10000 Hz
Output Level (at 1,000 Hz)
Open Circuit Voltage: –51.5 dBV/Pa* (2.6 mV)
*1 Pa = 94 dB SPL
Impedance
Rated impedance is 150 W (290 W actual) for connection
to microphone inputs rated low Z
Phasing
Positive pressure on diaphragm produces positive voltage
on pin 2 with respect to pin 3. See Figure 4.
Case
Silver blue enamel-painted die cast metal with hardened,
matte-finished, spherical steel mesh grille
Adjustable, Stand Adapter
Slip-in microphone mounting, unbreakable, adjustable
through 180 with standard 5/8"-27 thread, black finish
Dimensions (See Figure 5)
20,000
Net Weight
278 grams (9.92 oz)
Certification
Eligible to bear CE Marking. Conforms to European EMC
Directive 89/336/EEC. Meets applicable tests and perfor-
mance criteria in European Standard EN55103 (1996)
parts 1 and 2, for residential (E1) and light industrial (E2)
environments.
FURNISHED ACCESSORIES
o
120
Adjustable Stand Adapter
5/8" to 3/8" (Euro) Thread Adapter
o Storage Bag
90
OPTIONAL ACCESSORIES
o Windscreen
60
Isolation Mount
7.6 m (25 ft.) Cable
REPLACEMENT PARTS
Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grille Assembly
Plug (Connector) Assembly
2
INTERNAL WIRING
FIGURE 4
160 mm
(6.5 in.)
OVERALL DIMENSIONS
FIGURE 5
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. . . . . . . . . . A58WS Series (8 colors available)
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50 mm
(2 in.)
A25D
95A2050
26A21
A55M, A55HM
C25E, C25F
R176
RK265G
90F1984