Shure 518SA, 518SB User Guide
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MICROPHONES AND ELECTRONIC COMPONENTS
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222 HARTRW AVE., EVANSTON, IL, 60204 U.S.A.
AREA CODE 31
TWX:
91 0-231 -0048 TELEX: 72-4381
21866-2200 CABLE: SHUREMICRO
UNIDIRECTIONAL DYNAMIC MICROPHONES
CABLE RECOMMENDATIONS
with a standard 114-inch phone jack input, use the Shure
Model
with a professional three-socket connector, use the
Shure Model
DATA SHEET
MODELS 518SA AND
518SB UNISPHEREB B
To connect either the 518SA or 518SB to an amplifier
C20A cable. To connect the 518SB to an amplifier
C25B, C25E, or C25F cable.
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.
Microphone features:
Wide frequency response range for faithful, intelligible, and natural pickup of voice or music
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Symmetrical cardioid pickup pattern minimizes
feedback
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Rolled-off low-frequency response reduces proximity effect (response rise from microphones used
closeup)
Ball-type pop-filter minimizes breath popping and
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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
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high impedance, Model
518SA, to suit amplifier or
recorder inputs
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Field serviceable and backed by the Shure
guarantee
Handsome, durable, and economical
SINGLE-CONDUCTOR
TWO-CONDUCTOR
CABLE
CABLE
TYPICAL CABLE WIRING
FIGURE
1
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 conductors. The
microphone connector; the
C25B is rubber jacketed with a black finish
C25E has a black TRIPLE-
FLEX@ jacket and black finish microphone connector;
C25F has a gray TRIPLE-FLEX@ jacket and a silver-
The
finish microphone connector. All cables have a silverfinish 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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-10
1
20
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m
TYPICAL FREQUENCY RESPONSE
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FIEOULffiV
IN
MRTZ
FIGURE
2
Copyright 1984, Shure Brothers Inc.
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
3
Dimensions
164 mm (6-7116 in.) long X 54.1 mm (2-118 in.) dia.
Net
Weight
340 grams (12 oz)
FURNISHED ACCESSORY
Swivel Adapter A25B
OPTIONAL ACCESSORIES
Windscreen
Cable,
with Phone Plug)
Cable, 7.6m (25 ft); Two-Conductor Balanced
with 3-pin Connectors
6.lm (20 ft); Single-Conductor
Rubber-Jacketed, black microphone connector
TRIPLE-FLEXa, black microphone connector
TRIPLE-FLEXa
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6 WS Series
C20A
............
C25B
.................
C25E
C25F
Impedance
518SA: rated "High"
518SB: rated 150 ohms (Low)
Output Level
Open Circuit Voltage*
Power Level**
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
(at 1,000 Hz)
**0 dB
51
8SA 518SB
.........
-59.5 dB -82.0 dB
..............................................
=
1 mWllO pbar
-60.5 dB
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:
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.
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Shure Brothers Incorporated
Attention: Service Department
222 Hartrey Avenue
Evanstcsn, Illinois 60204
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