Shure 527B User manual

5
GENERAL
The 527B microphone is an extremely reliable hand-
held dynamic microphone with an extended low- and high-
frequency response particularly suited to ham radio use,
mobile FM transmission, and top-quality paging systems.
The microphone has a clear, crisp, and natural voice re-
sponse. It features small size, light weight, and modular
construction.
The modular construction of the 527B permits ease of
field serviceability. The design of the cartridge, switch, and
cable makes them easily replaceable. The microphone is
wired to prevent lead breakage or crimping.
The unit fits naturally and comfortably in the hand and
is not affected by heat or humidity. The exclusive
ARMO-DURrcase is immune to oil, grease, fumes, salt
spray, sun, rust, and corrosion and is outstanding in its
ability to withstand mechanical shocks and vibrations. The
“Million-Cycle” leaf-type switch is designed to withstand
severe operating conditions and constant usage.
CARTRIDGE SWITCH CABLE
BLACK
RED
GREEN
WHITE
BLACK
BUTTON MOVEMENT
+
INTERNAL CONNECTIONS
FIGURE 1
Features
DExtended low- and high-frequency reponse
DHighly intelligible voice reponse
DUnparalleled ruggedness and reliability
DMoving coil (dynamic) element
DARMO-DUR case
D“Million-Cycle” leaf-type switch controlling micro-
phone and external relay or switching circuits
DModular construction for easy field service
D“Lifetime” hang-up button and mounting bracket
DLong-life neoprene-jacketed coil cord
APPLICATIONS
The 527B microphone is highly recommended for all
types of mobile communications, ham radios, industrial
and commercial paging systems, and outdoor public ad-
dress systems. The 527B is a low-impedance microphone
and is recommended where long cable lengths are re-
quired.
INSTALLATION
A quick release mounting bracket for permanent
installation is supplied with each microphone. The bracket
has mounting holes with clearance for No. 6 or No. 8
screws (see Figure 4).
CONNECTIONS
The internal switch connections of the 527B are
shown in Figure 1. The 527B has a four-conductor, coiled
cord cable and a double-pole, single-throw, leaf-type
switch to control the microphone circuit and an external
relay or switching circuit. The WHITE and GREEN leads
are the audio conductors for balanced-line connection to
the microphone circuit; the shield is connected to the mi-
crophone circuit ground (see Table 1).
INPUT TYPE WIRE
COLOR FUNCTION XLR CONNECTOR 1/4 IN. PHONE
PLUG
WHITE AUDIO + PIN 2 TIP
BALANCED GREEN AUDIO – PIN 3 RING
SHIELD CHASSIS GROUND PIN 1 SLEEVE
CABLE-TO-CONNECTOR WIRING
TABLE 1
Model 527B User Guide
Dynamic Communications Microphone
27B2083 (AF)
2001, Shure Incorporated Printed in Mexico

The 527B is wired for balanced-line operation and is
recommended for use where long cable lengths are re-
quired, or areas where strong noise fields may exist. The
527B microphone can be fed directly into a standard low-
impedance amplifier, or a Shure A95 Series Line Matching
Transformer can be used for coupling the 527B to the input
of a high-impedance amplifier. A two-conductor shielded
cable can be used for extending only the microphone cir-
cuit. If both the microphone circuit and the remote circuit
are to be extended, a four-conductor cable, having two
shielded conductors for the microphone, should be used.
OPERATION
The 527B will operate satisfactorily under all ordinary
conditions of humidity, heat, and cold. Dropping the micro-
phone or other severe mechanical shocks should be
avoided.
SPECIFICATIONS
Type
Dynamic
Frequency Response
300 to 5,000 Hz (see Figure 2)
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FREQUENCY IN HERTZ
20000100001000
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RELATIVE RESPONSE IN dB
TYPICAL FREQUENCY RESPONSE
FIGURE 2
Sensitivity (at 1,000 Hz)
Open Circuit Voltage* –53 dBV/Pa (2.2 mV). . . . . . .
1 Pascal=94 dB SPL
Impedance
Microphone impedance rating is 150 Ω(200 Ω
actual) for connection to microphone inputs rated at
19 to 300 Ω
Switch
Double-pole, single-throw, leaf-type
Cable
Attached, 1.8 m (6 ft), 4-conductor (2 shielded),
neoprene-jacketed
Dimensions (See Figure 3)
3.688 in.
[9.37 cm]
1.765 in.
[4.48 cm]
.375 in.
[.95 cm]
.750 in.
[1.91 cm]
.093 in.
[.24 cm]
.062 in.
[.16 cm]
.032 in.
[.08 cm]
2.625 in.
[6.67 cm]
OVERALL DIMENSIONS
FIGURE 3
30 mm
36.5 mm
4.7 mm 34.5 mm
10.3 mm
9.5 mm
9.1 mm
(23/64 IN.)
(3/8 IN.)
(1 13/16 IN.)
(1-7/16 IN.)
(3/16 IN.) (1-23/64 IN.)
(13/32 IN.)
MOUNTING HOLES,
CLEARANCE FOR
No. 8 SCREWS
MOUNTING BRACKET
FIGURE 4
Net Weight
337 g (11.9 oz)
Packaged Weight
533 g (18.8 oz)
Certification
Meets European Union EMC Emissions and
Immunity Requirements (EN 50081–1: 1992,
EN 50082–1: 1992).
FURNISHED ACCESSORY
Mounting Bracket (3 in kit) RK6MB. . . . . . . . . . . . . . .
REPLACEMENT PARTS
Cartridge R131. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch RK319S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable C29C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHURE Incorporated Web Address: http://www.shure.com
222 Hartrey Avenue, Evanston, IL 60202–3696, U.S.A.
Phone: [phone] Fax: [phone]
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