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Model SM11 User Guide
Dynamic Lavalier Microphone
©2005, Shure Incorporated
27C3077 (Rev. 12)
Printed in U.S.A.
GENERAL
The Shure Model SM11 is a miniature dynamic lavalier
microphone designed for use in television broadcasting (on
camera), for sound reinforcement, in certain radio and motion
picture applications, and similar uses where a small,
professional-quality, microphone is required. The SM11 has an
omnidirectional pickup pattern, and its frequency response is
optimized for lavalier use. The microphone is supplied with a tie
clasp assembly, tie tack assembly, connector belt clip, and
zippered carrying/storage bag. An optional kit for mounting the
SM11 on various musical instruments is available as Shure Model
RK279.
Features
• Frequency response optimized for lavalier use. Acoustically
matches most stand- or desk-mounted microphones
• Small and lightweight for unobtrusive, virtually unseen operation
• Smooth exterior and recessed grille screen minimize clothing
noise
• Rugged aluminum case construction
• Extremely flexible long-life cable
• Two mounting options–tie clasp or tie tack
• Convenient, secure belt clip attaches connector to belt or clothing
SPECIFICATIONS
Type
Dynamic
Frequency Response
50 to 15,000 Hz (see Figure 1)
TYPICAL FREQUENCY RESPONSE
FIGURE 1
Polar Pattern
Omnidirectional
Impedance
Microphone rating impedance is 150 ohms (200 ohms actual)
for connection to microphone inputs rated at 19 to 300 ohms
Output Level (at 1,000 Hz)
Open Circuit Voltage.......... -64 dBV/Pa (0.60 mV)
(1 Pa = 94 dB SPL)
Polarity
Positive pressure on diaphragm produces positive voltage on
pin 2 with respect to pin 3
Hum Pickup
35 dB equivalent SPL in a 1 millioersted field
Cable
Non-detachable, 1.2 m (48 in.), two-conductor, shielded,
plastic-covered
Connector
Professional three-pin audio (XLR).
Case
Aluminum with gray enamel finish
Dimensions
See Figure 2
OVERALL DIMENSIONS
FIGURE 2
14.29 mm
(
9
/
16
in.)
38.1 mm
(1
1
/
2
in.)
CABLE:
1219 mm
(48 in.)
83.5 mm
(3
9
/
32
in.)