Shure 55SH User manual

Model 55SH Series II User Guide
©2003, Shure Incorporated
27B2465 (Rev. 6)
Printed in U.S.A.
This microphone design is a registered
trademark of Shure Incorporated.
GENERAL
The Model 55SH Series II provides the Shure classic
UNlDYNE. II design coupled with modern acoustic compo-
nents to meet today’s performance standards. This micro-
phone is excellent for vocal pickup with its characteristic
Shure presence peak.
The 55SH Series II has a cardioid (unidirectional) polar
pickup pattern that minimizes sound pickup from the rear of
the microphone. This allows the Model 55SH Series II to be
used in close proximity to loudspeakers without creating
feedback problems, and it can perform under adverse
acoustic conditions where omnidirectional microphones
cannot.
The 55SH Series II has a low-impedance balanced output
designed for connection to microphone inputs rated at 75 to
300 ohms. The microphone features a cartridge shock
mount to reduce stand noise, an On/Off switch, and an at-
tached, self-tensioning, 5/8”–27 thread swivel mount.
This microphone is ideal for public address or theater–
stage sound systems, as well as for broadcasting, record-
ing, and other sound applications where a stand-mounted
microphone with a classic look is desirable.
Features
• Classic appearance, modern performance
• Frequency response tailored for speech, vocals and in-
strumental music
• Cardioid directional pattern for optimum performance in
adverse acoustic environments
• Shock–mounted cartridge minimizes stand-transmitted
noise, ensures quiet operation
• Rugged die cast case and mechanical design for reliabil-
ity under rigorous conditions
•Self-tensioning swivel mount, permits tilting through 45
forward and 80
backward
SPECIFICATIONS
Type
Dynamic
Frequency Response
50 to 15,000 Hz (See Figure 1)
TYPICAL FREQUENCY RESPONSE
FIGURE 1
Polar Pattern
Cardioid (unidirectional), uniform with frequency, symmetrical
about axis (see Figure 2)
TYPICAL POLAR PATTERNS
FIGURE 2
20 200001000 1000050 100
98765432 98765432
+10
0
–10
Hz
dB

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Impedance
Microphone rating impedance is 150 ohms (270 ohms actual)
for connection to microphone inputs rated at 75 to 300 ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage. . . . . . . . . . . . . . –58.0 dBV/Pa (1.3 mV)
1 Pascal=94 dB SPL
Polarity
Positive pressure on the diaphragm produces positive voltage
on pin 2 relative to pin 3 of the output connector
Switch
Built–in On/Off switch, integral part of swivel mount, connector
Three pin professional type, designed to mate with Cannon XL
series, Switchcraft A3 (Q.G.) series, or equivalent
Case
Chrome–plated die casting
Dimensions
See Figure 3
OVERALL DIMENSIONS
FIGURE 3
Net Weight
624 grams (22 oz)
CERTIFICATION
Eligible to bear CE Marking. Conforms to European EMC Direc-
tive 89/336/EEC. Meets applicable tests and performance criteria
in European Standard EN55103 (1996) parts 1 and 2, for residen-
tial (E1) and light industrial (E2) environments.
POLARITY
To test two microphones and their cables for common po-
larity, connect them to an amplifier and talk or sing into them
while holding them three or four inches apart. The sound
from the speakers should be the same when talking into ei-
ther microphone or directly between them if they have com-
mon polarity. If the sound level drops drastically, or if a dead
spot is found, when talking between the two microphones,
either the microphones or their cables have different polari-
ty. All cables and microphones can be tested in this manner
to ensure that they have common polarity.
To reverse the polarity of a low–impedance microphone
cable, use either a Shure A15PRS Switchable Phase Re-
verser or interchange the wires connected to pins 2 and 3 of
the connector. To reverse the polarity of a microphone, inter-
change the cartridge leads (see Figure 4.) This should be
performed by your dealer, the Shure Factory Service De-
partment, or other qualified service personnel.
INTERNAL CONNECTIONS
FIGURE 4
OPTIONAL ACCESSORIES
Desk Stand...................................................S37A, S39A
Line Matching Transformer ........................ A85F, A95UF
Cable and Plug Assembly................. C25B, C25E, C25J
REPLACEMENT PARTS
Cartridge ................................................................. R115
On/Off Switch....................................................... RK32S
Plug Element...................................................... RK169P
For additional service or parts information, please contact
Shure’s Service department at 1-800-516-2525 or
www.shure.com. Outside the United States, please contact
your authorized Shure Service Center.
CARTRIDGE SWITCH XLR CONNECTOR
BLACK
YELLOW
CODED TERMINAL
BLUE
YELLOW
BLACK
1
2
3