Manual
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 windscreen when using the microphone outdoors, for
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 PATTERNS
FIGURE 3
Sensitivity (at 1,000 Hz)
Open Circuit Voltage: –54.5 dBV/Pa* (1.9 mV)
*(1 Pa = 94 dB SPL)
Impedance
Rated impedance is 150Ω (310Ω actual) for connection to
microphone inputs rated low impedance.
Polarity
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 polycarbo-
nate 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
Eligible to bear CE Marking. Conforms to European EMC Di-
rective 89/336/EEC. Meets applicable tests and performance
criteria in European Standard EN55103 (1996) parts 1 and 2,
for residential (E1) and light industrial (E2) environments.
FURNISHED ACCESSORIES
Swivel Adapter A25D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 RPM210. . . . . . . . . . . . . . . . . .
For additional service or parts information, please contact
Shure’s Service department at 1-800-516-2525. Outside the
United States, please contact your authorized Shure Service
Center.