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222 HARTREY AVE.. EVANSTON. IL. 60204 U.S.A.
D
Q
MICROPHONES AND ELECTRONIC COMPONENTS
1
DATA
SHEET
MODEL 507B
AREA CODE 3121866-2200
CABLE: SHUREMlCRO
I
TWX: 910-231-0048
TELEX: 72-4381
I
DYNAMIC HAND-HELD PAGING MICROPHONE
GENERAL
The 5078 microphone is a high quality, extremely
reliable dynamic hand-held microphone with an ex-
tended low- and high-frequency response that partic-
ularly suits it for ham use, mobile FM transmission,
and top-quality paging systems. The microphone has a
highly intelligible, clear, crisp, natural voice response.
It features professional design, small size, light weight,
and modular construction, providing extreme depend-
ability and exceptional ease of field service.
The modular construction of the 507B accounts for
its tremendous ease of field serviceability. The car-
tridge, switch, and cable are of modular design which
make them replaceable in a matter of minutes if re-
placement is ever necessary. The microphone wiring
is channeled so that crimping or breaking of wires is
no longer a concern.
The unit fits naturally and comfortably in the hand
and is not affected by heat or humidity. Exclusive
ARMO-DUR@ case is light gray and charcoal, is im-
mune to oil, grease, fumes, salt spray, sun, rust and
corrosion-and
is outstanding in its ability to withstand
mechanical shocks and vibration. "Million-Cycle" leaf-
type switch is double-pole, single-throw, designed to
withstand severe operating conditions and constant
usage. The TRIPLE-FLEX@ cable provides 3 to 4 times
the flex life of any previously available coiled cords-
another Shure first.
Microphone Features:
Extended low- and high-frequency response
Highly intelligible voice response
Unparalleled ruggedness and reliability
Moving coil (dynamic) element
ARMO-DUR@ case
"Million-Cycle"
leaf-type
switch
controlling
microphone and external relay or switching
circuits
Modular construction
Exceptional ease of field service
"Life-time" hang-up button and mounting bracket
TRIPLE-FLEX@ cable provides exceptionally long
life
APPLICATION
The Model 507B microphone is highly recommended
for all types of mobile communications; for hams;
industrial and commercial paging; outdoor public
address systems; and all applications where a rugged
hand microphone is required. The Model 507B is a low
impedance microphone and is recommended where
long cable lengths are required.
l NSTALLATION
A 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 1).
CONNECTIONS
The internal switch connections of Model 507B are
shown in Figure 2. The 507B has a four-conductor
coiled cord cable (two conductors shielded) 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 "hot" conductors for balanced-line connection to
the microphone circuit; the shield is connected to the
microphone circuit ground. The RED and BLACK leads
control the relay or switching circuit. The microphone
circuit of the switch is normally open but may be
easily modified for normally shorted operation.
The Model 507B is wired for balanced-line operation
and is recommended for use where long cable lengths
are required, or conditions where severe hum pickup
may exist. The 507B microphone may be fed directly
into a standard low-impedance amplifier, or a Shure
A95 Series Line Matching Transformer may be used for
MOUNTING HOLES,
CLEARANCE FOR
No.
B
SCREWS
-
MOUNTING BRACKET
FIGURE 1
BUTTON MOVEMENT--r
k,
1
YELLOW
I
INTERNAL CONNECTIONS
FIGURE 2
Copyright
1 9 8 1 ,
Shure Brothers Inc.
27A1170 (UK)
(OVER)
Printed i n
U.S.A.
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