Shure SM94-LC User's Guide download pdf

Model SM94 User Guide

27C2689 (Rev. 5)

Printed in U.S.A.

MODEL SM94

UNIDIRECTIONAL CONDENSER MICROPHONE

The Model SM94 is a unidirectional electret condenser

microphone tailored to the instrument miking needs of professional

musicians and sound engineers in both live performance and

sound recording. Its smooth, flat frequency response is free of

either a “presence peak” or a low-frequency rolloff, making it a

perfect choice for all types of musical instruments. The SM94 is

equally at home in sound reinforcement systems or in sound

studios and motion picture/TV scoring stages. When used with the

optional windscreen, the SM94 can be used by vocalists and

speechmakers who desire a wide, flat response with minimum

coloration.

The SM94 can be powered by any phantom power source, or by

an internal 1.5-volt AA battery. The battery, which serves as a

backup power source in the event of phantom power failure, can

provide up to 5,000 hours of continuous operation.

The SM94 is supplied with a swivel adapter for use on a

microphone stand, boom or gooseneck, and a zippered vinyl

storage bag. Model SM94-LC is supplied without a cable.

Accessories include a foam windscreen (A3WS), two-channel

phantom power supply (PS1A), and 7.6 m (25 ft.) microphone

cable (C25J).

Features

• Wide, flat response for optimum musical instrument sound re-

production

• Full spectrum sound–no presence peak or low-end rolloff

• Cardioid polar pattern that is uniform with frequency and sym-

metrical about axis for maximum rejection of unwanted sound

and minimum of-axis coloration

• Very low susceptibility to RF and electromagnetic hum

• Low distortion output and wide dynamic range for variety of load

impedances

• Shock–mounted cartridge for reduced handling noise

• Accepts 12 to 48 Vdc phantom power

• Rugged all–metal construction

• Usable over wide range of environmental conditions

• Built–in battery power backup

• Optional foam windscreen

SPECIFICATIONS

Type

Cardioid condenser (electret bias)

Frequency Response

40 to 16,000 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

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Model SM94 User Guide

Page 2

2Output ImpedanceRated at 150 Ω; 200 Ω actualRecommended Minimum Load Impedance800 ΩSensitivity (at 1,000 Hz)Open Circuit Voltage: –49 dBV/Pa (3.5 mV)

Page 3 - REPLACEMENT PARTS

3regulates the phantom voltage, and the 1.5-volt battery providesinstantaneous backup in case the phantom power supply fails. Theregulator/reverse vol

Page 4

4MODÈLE SM94 MICROPHONE A CONDENSATEUR UNIDIRECTIONNEL CARACTÉRISTIQUESTypeCardioïde à Condensateur (Electret)Réponse en fréquence40 à 16 000 Hz (Voir

Page 5

5MODE D'EMPLOILe SM94 est conçu pour être utilisé avec une alimentation fantamepar un Shure modèle PS1A, ou par toute alimentation demicrophone d

Page 6

6Geräuschspannungsabstand71 dB (IEC 651) bei 94 dB SchalldruckÜberspannung und UmkehrpolaritätsschutzMax. Externe Spannung an Stift 2 & 3 gegen St

Page 7

7MODELO SM94MICROFONO DE CONDENSADOR UNIDIRECCIONALESPECIFICACIONESTipoDe condensador cardioide (polarizado electret)Respuesta de frecuencia40 a 16 00

Page 8

8OPERACIONEl SM94 está disenado para la alimentación simplex por medio dela fuente modelo PS1A, o por prácticamente cualquier fuente dealimentación qu