Shure SM53 Techical Data

1 2 H A R T R E Y A V E . , E V A N S T O N . I L . , 60204 U . S . A .
A R E A C O D E 3 1 2 / 8 6 6 - 2 2 0 0 C A B L E : S H U R E M I C R O
GENERAL
The Models SM53 and SM54 are rugged dynamic car-
dioid microphones expressly designed for professional
applications requiring the ultimate in sound quality and
control. The performance and appearance of the two
models are very similar; however, the SM54 is
spe~ifically designed for use in very difficult close-
talking and hand-held situations because of its immu-
nity to "pop" and breath blasts.
Microphone Features:
Broad, smooth frequency response: provides
clean, natural reproduction of both voice and
music.
Cardioid directional pattern: optimum for wide
front working area with excellent side and rear re-
jection; off-axis rejection is uniform with frequen-
cy and symmetrical about axis to prevent sound
coloration and ~ r o v i d e maximum control of un-
wanted sound.
Integral acoustic "pop" filter on the SM54 virtually
eliminates problems of explosive speech and
breath sounds.
Minimal proximity effect: same well-balanced
sound from close talking to distant pickup.
Mechanical noise isolation: cartridge shock-
mounted to minimize stand and handling noise.
Bass rolloff switch: provides a gradual low fre-
quency rolloff in applications where an overall ris-
ing response characteristic is advantageous.
Extremely low hum sensitivity: permits use in ex-
treme hum fields.
Rugged construction: assures dependable opera-
tion with unchanging performance.
The SM53 and SM54 are designed for both stand and
hand-held use. No special precautions are required to
avoid obstruction of the rear entries, since normal
operation is assured even with only one of the small
rear entry holes open.
The reliable performance, outstanding features and
handsome appearance of the SM53 and SM54 make
them extremely versatile and ideally suited for many
demanding applications in television, radio, recording,
motion pictures and sound reinforcement. They may be
intermixed on stage and on camera with near identical
appearance and performance.
VARIATIONS
Models SM53-CN and SM54-CN: Same as models SM53
and SM54, respectively, except supplied with profes-
sional three-pin audio connector on equipment end of
cable. (See Specifications for details on cable.) Models
SM53-LC and SM54-LC: Same as Models SM53 and
SM54, respectively, except supplied without cables.
SPECIFICATIONS
Type
Dynamic
Frequency Response
70 to 16,000 Hz (See Figure 1)
+I0
m
s
l o
i
z
-10
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L
20 XI
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W O
FREMNCY I N
mmz
TYPICAL FREQUENCY RESPONSE
FIGURE 1
Copyright 1981. Shure Brothers Inc.
27A1734 (AL)
Polar Pattern
Cardioid (Unidirectional) Response
-
Uniform with
frequency, symmetrical about axis (See Figure 2)
-
40Hz
-
1600Hz
----
IOOHZ 2MOHl
.......
200 H z
.......
6300Hz
-
800Hz
KJ.Oo0~
TYPICAL POLAR PATTERNS
FIGURE 2
Impedance
Microphone rating impedance is 150 ohms (175 ohms
actual) for connection to microphone inputs rated at
19 to 300 ohms
Output Level (at 1000 Hz)
. . . . . . . . . . . .
Open circuit voltage
-81.0 dB (0.09 mV)
(0 dB
=
1 volt per microbar)
Power level
. . . . . . . . . . . . . . . . . . . -
60.0 dB
(0 dB
=
1 milliwatt per 10 microbars)
Hum Pickup (typical)
13 dB equivalent SPL per millioersted
Bass Rolloff
See Figure 3 for location of response selector switch.
See Figure 1 for rolloff response
U.S. Patent 0218,315
Printed in U.S.A.