Shure 518SA, 518SB User Guide

UNIDIRECTIONAL DYNAMIC MICROPHONES

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222 HARTRW AVE., EVANSTON, IL, 60204 U.S.A.

AREA CODE 31

21866-2200 CABLE: SHUREMICRO

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TWX:

91 0-231 -0048 TELEX: 72-4381

MICROPHONES AND ELECTRONIC COMPONENTS

GENERAL

The Models 518SA and 518SB are unidirectional

dynamic microphones with a ball-type grille that is an

effective pop filter. The grille minimizes wind and breath

noise as well as popping (from sounds like b's and p's)

when the microphone is used close to the mouth. Both

microphones are equipped with an improved internal

shock mount that considerably reduces pickup of

mechanical and handling noise.

Shure-tested and -proved reliability and durability

makes these microphones ideal for speech or music

pickup in schools, churches, and meeting rooms, and

for sound reinforcement, broadcast, or recording of

small musical groups.

DATA SHEET

MODELS 518SA AND

518SB UNISPHEREB B

Microphone features:

Wide frequency response range for faithful, in-

telligible, and natural pickup of voice or music

Symmetrical cardioid pickup pattern minimizes

feedback

Rolled-off low-frequency response reduces prox-

imity effect (response rise from microphones used

closeup)

Ball-type pop-filter minimizes breath popping and

wind noise

Shure-designed, improved cartridge shock mount

for quiet operation, low stand or handling noise

Slip-in swivel adapter supplied for simplicity of use

either handheld or stand mounted

Lockable On-Off switch

Three-pin professional audio connector, the in-

dustry standard, for maximum interchangeability of

cables

Available either low impedance, Model 518SB, or

high impedance, Model

518SA, to suit amplifier or

recorder inputs

Field serviceable and backed by the Shure

guarantee

Handsome, durable, and economical

CABLE RECOMMENDATIONS

To connect either the 518SA or 518SB to an amplifier

with a standard 114-inch phone jack input, use the Shure

Model

C20A cable. To connect the 518SB to an amplifier

with a professional three-socket connector, use the

Shure Model

C25B, C25E, or C25F cable.

SINGLE-CONDUCTOR

CABLE

TWO-CONDUCTOR

CABLE

TYPICAL CABLE WIRING

FIGURE

All are high-quality, low-noise, flexible cables, espe-

cially designed for microphone use. The

C20A is 6.lm

(20 ft) long with a single shielded conductor. The C25B,

C25E, and C25F are 7.5m (25 ft) with two shielded con-

ductors. The

C25B is rubber jacketed with a black finish

microphone connector; the

C25E has a black TRIPLE-

FLEX@ jacket and black finish microphone connector;

The

C25F has a gray TRIPLE-FLEX@ jacket and a silver-

finish microphone connector. All cables have a silver-

finish equipment connector.

NOTE:

Because the 518SA is a high impedance

microphone, the total cable length should be limited to

6.lm (20 ft).

SPECIFICATIONS

Type

Dynamic

Frequency Response

80 to 15,000 Hz (see Figure 2)

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TYPICAL FREQUENCY RESPONSE

FIGURE

27A1731 (DB)

U.S. Patents 3,132,713 and 3,240,883

Printed in U.S.A.

Polar Pattern

Cardioid (unidirectional) See Figure 3

TYPICAL POLAR PATTERNS

FIGURE

Impedance

518SA: rated "High"

518SB: rated 150 ohms (Low)

Output Level

(at 1,000 Hz)

8SA 518SB

Open Circuit Voltage*

.........

-59.5 dB -82.0 dB

Power Level**

..............................................

-60.5 dB

**0 dB

1 mWllO pbar

Switch

Built-in On-Off switch with lockplate. To lock switch

On, remove screw on lockplate and turn lockplate

180°. Reassemble and tighten screw.

Swivel Adapter

Adjustable from vertical to horizontal, for 518"-27

stand thread.

Case

Dark brown finish die casting and chrome-plated

steel grille

Dimensions

164 mm (6-7116 in.) long

54.1 mm (2-118 in.) dia.

Net

Weight

340 grams (12 oz)

FURNISHED ACCESSORY

............................................................

Swivel Adapter A25B

OPTIONAL ACCESSORIES

Windscreen

....................................................

6 WS Series

Cable,

6.lm (20 ft); Single-Conductor

with Phone Plug)

...........................................................

C20A

Cable, 7.6m (25 ft); Two-Conductor Balanced

with 3-pin Connectors

............

Rubber-Jacketed, black microphone connector

C25B

TRIPLE-FLEXa, black microphone connector

.................

C25E

TRIPLE-FLEXa

...............................................................

C25F

REPLACEMENT PARTS

............................................................................

Cartridge R8

.......................................................

Screen and Grille RK82G

GUARANTEE

This Shure product is guaranteed in normal use to be

free from electrical and mechanical defects for a period

of one year from date of purchase. Please retain proof

of purchase date. This guarantee includes all parts and

labor. This guarantee is in lieu of any and all other

guarantees or warranties, express or implied, and there

shall be no recovery for any consequential or incidental

damages.

SHIPPING INSTRUCTIONS

Carefully repack the unit and return it prepaid to:

Shure Brothers Incorporated

Attention: Service Department

222 Hartrey Avenue

Evanstcsn, Illinois 60204

If outside the United States, return the unit to your

dealer or Authorized Shure Service Center for repair.

The unit will be returned to you prepaid.