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Shure SM57 - General Rules for Microphone Use; Specifications; Frequency Response; Polar Pattern

Shure SM57
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2
GENERAL RULES FOR MICROPHONE USE
1.Aim
the microphone toward the desired sound source and
away from unwanted sources.
2.Locate
the microphone as close as practical to the desired
sound source.
3.Work close to the microphone for extra bass response.
4.Use only one microphone per sound source.
5.Locate multiple microphones at least three times as far
from other microphones as from the sound source.
6.Use as few microphones as practical.
7.Place
microphones away from sound reflecting surfaces.
8.Add
a w
indscree
n w
he
n u
sin
g t
h
e m
icrophon
e o
utdoors,
f
or
closeup speech, or vocals.
9.Avoid excessive handling to minimize mechanical noise.
SPECIFICATIONS
Type
Dynamic
Frequency Response
40 to 15,000 Hz (see Figure 2)
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TYPICAL
FREQUENCY RESPONSE
FIGURE
2
Polar Pattern
Unidirectional (cardioid), rotationally symmetrical about
microphone axis, uniform with frequency (see Figure 3)
TYPICAL
POLAR P
ATTERNS
FIGURE
3
Output Level (at 1,000 Hz)
Open Circuit Voltage: –74.5 dB* (0.19 mV)
Power Level: –56.0 dB**
*0
dB = 1 V/
bar
**0 dB = 1 mW/10
bar
Impedance
Rated
impedance is 150
(310
actual)
for connection to
microphone inputs rated low impedance.
Phasing
Positive pressure on diaphragm produces positive voltage
on pin 2 with respect to pin 3 (see Figure 4)
CARTRIDGE
CODED TERMINAL
TRANSFORMER
GREEN
YELLOW
BLUE
RED
BLACK
1
2
3
INTERNAL CONNECTIONS
FIGURE
4
Connector
Three-pin professional audio connector (male XLR type)
Case
Dark gray, enamel-painted, die-cast steel with a
polycarbonate grille and a stainless steel screen.
32
mm
(1
1
/
4
in.)
157 mm
(6
3
/
16
in.)
23 mm
(
29
/
32
in.)
DIMENSIONS
FIGURE
5
Swivel Adapter
Positive-action, break-resistant, adjustable through 180°,
with standard
5
/
8
in.-27 thread
Net Weight (without cable)
284 grams (10 oz)
Certification
Conforms
to European Union directives, eligible to bear CE
marking; meets European Union EMC Immunity Require-
ments
(EN 50 082–1, 1992); RF radiated (IEC 801–3); ESD
(IEC 801–2); EFT (IEC 801–4).
FURNISHED ACCESSORIES
Swivel Adapter A25C
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Bag 26A13.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPTIONAL ACCESSORIES
Windscreen A2WS
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Desk Stand S37A, S39A.
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Isolation Mount A55M.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Mount A25M, A26M.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable (7.6 m [25 ft]) C25E, C25F.
. . . . . . . . . . . . . . . . . . . .
REPLACEMENT PARTS
Cartridge R57
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen and Grille Assembly RK244G.
. . . . . . . . . . . . . . . . .
For additional service or parts information, please contact
Shures Service department at 1-800-516-2525. Outside the
United
States, please contact your authorized Shure
Service
Center.

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