Shure specifications Models SM48 and SM48S Unidirectional Dynamic Microphones, Specifications

Models SM48 and SM48S User Guide

MODELS SM48 AND SM48S

UNIDIRECTIONAL DYNAMIC MICROPHONES

Shure Models SM48 and SM48S unidirectional dynamic microphones are designed for professional sound reinforcement, studio recording, and broadcasting applications. They maintain a true cardioid pattern throughout their frequency range, ensuring high gain before feedback and rejection of off-axis sound. The tailored frequency response is ideal for vocals. A presence rise brightens mid-range performance, and a low frequency rolloff controls proximity effect.

Both models include a shock mounted cartridge, a steel mesh grille, and an integral “pop” filter. The SM48S also includes a lockable On/ Off switch.

Each microphone is supplied with an adjustable stand adapter and a zippered carrying/storage bag. Cables are available separately.

FEATURES

•Cardioid pickup pattern rejects off-axis sound and provides superior gain before feedback

•Frequency response tailored for vocals, with brightened mid- range and bass rolloff to control proximity effect

•Shock-mounted cartridge for exceptional ruggedness and reduced handling noise

•Built-in “pop” filter that reduces explosive breath sounds and wind noise

•Supplied stand adapter and carrying/storage bag

•Lockable On/Off switch (SM48S only)

•Legendary Shure quality and ruggedness

VARIATIONS

SM48

SM48S (with lockable On/Off switch)

©2006, Shure Incorporated 27C2699 (Rev. 6)

SPECIFICATIONS

Type

Dynamic

Frequency Response

55 to 14,000 Hz (see Figure 1)

Polar Pattern

Cardioid (unidirectional) rotationally symmetrical about microphone axis, uniform with frequency (see Figure 2)

Impedance

Microphone rating impedance is 150 Ω (270 Ω actual) for connection to microphone inputs rated at 19 to 300 Ω

Output Level (at 1,000 Hz)
Open Circuit Voltage: *	–57.5 dBV/Pa (1.3 mV)

*1 Pa = 94 dB SPL

Connector

XLR professional audio

Polarity

Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3. See Figure 3.

Dimensions

See Figure 4

Net Weight

370 grams (13.1 oz)

Packaged Weight

672 grams (1 lb, 8.5 oz)

CERTIFICATIONS

Eligible to bear CE Marking. Conforms to European EMC Directive 89/336/EEC. Meets applicable tests and performance criteria in European Standard EN55103 (1996) parts 1 and 2, for residential (E1) and light industrial (E2) environments.

FURNISHED ACCESSORIES

Swivel Adapter	A25D
Carrying/Storage Bag	26A13

OPTIONAL ACCESSORIES

Windscreen	A58WS
Desk Stand	S37A, S39A
Isolation Mount	A55M, A55HM
Dual Mount	A26M
7.6 m Cable (25 ft)	C25F

REPLACEMENT PARTS

Cartridge	R136
Screen and Grille Assembly	RK248G
Plug Assembly	RK40P
On/Off Switch	RK81S

LOCKING THE ON/OFF SWITCH (SM48S ONLY)

To lock the On/Off switch in On position, remove the screw from the lockplate and rotate the lockplate 180°. Then reinstall the screw.

For additional service or parts information, please contact the Shure Service Department at 1-800-516-2525. Outside the United States, please contact your authorized Shure Service Center.

Printed in U.S.A.