Shure SM2 - Manual

GENERAL

The SM2 is a comfortable, self-adjusting headset with dual

enclosed ear receivers and an attached broadcast-quality

boom-mounted microphone. Designed for news and sports

broadcasting, special events remote announcing, interview-

ing, and intercom systems, the SM2 permits convenient

hands-free operation
The microphone in the SM2 is a close-talking unidirectional

dynamic type with a response fiom 50 to 15,000 Hz. Because

of its noise-reducing character, it discriminates in favor of

close sounds and against distant sounds. As a result, it can be

used even under extremely noisy conditions without loss or

masking of the voice signal. The microphone boom pivots

through 155º so that the microphone can be correctly posi-

tioned at the corner of the mouth either from the left or right

side. A locking thumbscrew prevents the microphone from

slipping or twisting out of place.
The dual earphones have a frequency response of 100 to

8,000 Hz with excellent voice intelligibility for cue, program,

sidetone, or intercom signals. High sensitivity and the en-

closed ear feature help to block out room noise and ensure

clarity of the incoming signal. Spring clips on the self-adjust-

ing vertical slides and the free-swiveling action of the cush-

ioned earpieces assure user comfort even when the headset

is worn for an extended period of time.
An accessory microphone windscreen is provided to protect

against wind noise and explosive breath sounds. The head-

set is furnished with a detachable cable having two shielded

conductors for the balanced-line low-impedance microphone

output, and three unshielded conductors for the 2000-ohm

earphones.

Features:

•

Close-talk microphone operation and unidirectional polar
pattern for effective noise reduction

•

Smooth, natural microphone voice frequency response

•

Microphone can be worn on right or left side, boom pivots
through 155

°

•

Microphone boom length adjusts through 89 mm
(31/2 in.) range

•

High sensitivity enclosed ear receivers block out room

noise, enhance clarity of reception

•

Self-adjusting, free-swiveling cushioned earpieces pro-

mote user comfort, lower fatigue during extended periods

of use

•

The Shure guarantee of rugged construction and durability

SPECIFICATIONS

MICROPHONE

Type

Dynamic, Close-Talking

Frequency Response

(at 8 mm [5/16 in.])

50 to 15 000 Hz (see F gure 1)

TYPICAL MICROPHONE FREQUENCY RESPONSE

FIGURE 1

Polar Pattern

Cardioid (unidirectional) response-uniform with frequency,

symmetrical about axis (see Figure 2)

TYPICAL POLAR PATTERN

FIGURE 2

Impedance

Microphone rating impedance is 150 ohms (200 ohms

actual) for connection to microphone inputs rated at

19 to 300 ohms

Model SM2 User Guide

27B2183 (CA)



2003, Shure Incorporated

Printed in U.S.A.

US patent 4,039, 765