Model SM11 User Guide
Shure Brothers Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.
27A2192 (QH)
E
1997, Shure Brothers Incorporated
Printed in U.S.A.
DYNAMIC LAVALIER MICROPHONE
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 mo-
tion picture applications, and similar uses where a small,
professional-quality, microphone is required. The SM11 has
an omnidirectional pickup pattern, and its frequency re-
sponse is optimized for lavalier use. The microphone is sup-
plied 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. Acousti-
cally matches most stand- or desk-mounted micro-
phones
•
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 .......... –85 dB (0.06 mV)
(0 dB = 1 volt per microbar)
Power Level ........................... –64 dB
(0 dB = 1 milliwatt per 10 microbars)
Phasing
Positive pressure on diaphragm produces positive
voltage on pin 2 with respect to pin 3
Hum Pickup
35.3 dB equivalent SPL in a 1 millioersted field
Cable
Non–detachable, 1.2m (48 in.), two-conductor,
shielded, plastic-covered
Connector
Professional three-pin audio connector designed to
mate with Cannon XL series, Switchcraft A3 (Q.G.)
series or equivalent connectors
Case
Aluminum with gray enamel finish
Dimensions
See Figure 2
OVERALL DIMENSIONS
FIGURE 2
