Shure 515SBG-18XF User Guide

Model 515SBGX, 515SBG-18X and

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515SBG-18XF User Guide

VARIATIONS

MODEL 515SBGX: Does not include gooseneck or mounting

flange
MODEL 515SBG-18X: Includes gooseneck and 76.2 mm (3 in.)

diameter mounting flange
MODEL 515SBG-18XF: Includes gooseneck and 44.4 mm
(1-3/4 in.) diameter mounting flange

515SBGX

515SBG-18X

GENERAL

The Shure Models 515SBGX, 515SBG-18X, and 515SBG-18XF
microphones are low-impedance dynamic microphones designed
to be mounted on flexible goosenecks or fixed pips. Optimized fre­quency response and a unidirectional (cardioid) pickup patter
makes them ideal for language labs, paging applications, and base
station communications. They are also recommended for use as
talkback or cuing microphones in TV, film, and recording studios.
Because of their low impedance, these microphones retain their
level and response characteristics even when long lengths of cable
are used.

All three models are supplied with a push-to-talk button and a
four-conductor cable (two conductors shielded).

SPECIFICATIONS

Type

Dynamic (moving coil)

Frequency Response

80 to 15,000 Hz (see Figure 1)

+20

+10

1 cm

(3/8 in.)

0

dB

.06 cm

–10

(2 ft.)

-20
20 200001000 1000050 100

TYPICAL FREQUENCY RESPONSE

FIGURE 1

Polar Pattern

Cardioid (unidirectional). Effective rejection of sound at rear of mi­crophone is uniform at all frequencies, while front pickup charac­teristics are uniform about axis (see Figure 2).

9876543298765432

Hz

Features

• Frequency response optimized for announcing, narration, and
paging applications

• Cardioid pickup pattern symmetrical about axis

• Neodymium magnet for high signal-to-noise ratio

• Shock-mounted cartridge for quiet operation and low stand/han-

dling noise

• Tough diecast locking grille and handle

• Built-in push-to-talk button controls microphone circuit and relay

or control circuit

• 45.7 cm (18 in.) gooseneck and mounting flange supplied

©2006, Shure Incorporated

27E2974 (Rev. 8)

(515SBG-18X and 515SBG-18XF only)

Impedance

150 Ω rated (180 Ω actual)

Output Level (at 1,000 Hz)

Open Circuit Voltage: -57 dBV/Pa* (1.4 mV)

Phasing

Positive pressure on diaphragm produces positive voltage on
RED cable relative to BLACK cable lead

TYPICAL POLAR PATTERN

FIGURE 2

*1 PA = 94 DB SPL

Printed in U.S.A.

SHIELD

RED

BLACK

BLUE

GREEN

WHITE

DIRECTION TOACTUATE

SWITCH

CASE GROUND

CARTRIDGE

RED DOT

Switch

Built-in, leaf-type, non-locking, push-to-talk

Shock Mount

Internal rubber vibration isolator

Cable

Highly durable cable with effective hum shielding, four conduc­tors (two shielded), plastic jacketed

Model 515SBGX: 1.8 m (70 in.)
Models 515SBG-18X and 515SBG-18XF: 1.3 m (51 in.) from
gooseneck

Case

Silver finish die casting with black enamel diecast grille and
stainless steel screen

Dimensions

See Figure 3

6.5 in.

16.5 cm
51 in.

120 cm

0.85 in.

1.5 in.

3.75 cm

2cm

OVERALL DIMENSIONS

FIGURE 3

Certification

Conforms to European Union directives, eligible to bear CE
marking; meets European Union EMC Immunity Requirements
(EN 55103).

Net Weight

515SBGX ......................................................380 g (13.5 oz)

515SBG-18X .................................................900 g (31.8 oz)

515SBG-18XF...............................................787 g (27.8 oz)

FURNISHED ACCESSORIES

1.27 mm (.050 in.) Hex Wrench ................................. 80A67

45.75 cm (18 in.)Gooseneck

(515SBG-18X, 515SBG-18XF only)............................... G18

Flange (515SBG-18X only) ....................................... A13HD

Flange (515SBG-18XF only) .......................................... A12

REPLACEMENT PARTS

Cartridge.......................................................................R180

Grille Assembly ....................................................... RK334G

Cable...................................................................... 70A4063

Gooseneck (515SBG-18X, 515SBG-18XF) ................... G18

Flange (515SBG-18X)............................................... A13HD

Flange (515SBG-18XF).................................................. A12

Windscreen ...............................................................A85WS

CONNECTIONS

These low-impedance microphones are designed for connection to
microphone inputs rated at 75 to 300 ohms. Using balanced-line
low-impedance cables permits very long cable lengths without af­fecting response or level. The RED and BLACK cable leads are the
microphone conductors for balanced-line connections; the shield is
connected to the amplifier ground.

For unbalanced operation, connect the BLACK lead to the shield,
and use the RED lead as the microphone conductor.

The GREEN and WHITE cable leads are used to control an exter­nal relay or control circuit. Refer to the following table and to the
wiring diagram in Figure 4.

INPUT TYPE

UNBALANCED BLACK AUDIO GROUND PIN 3 SLEEVE

BALANCED BLACK AUDIO - PIN 3 RING

WIRE

COLOR

RED AUDIO PIN 2 TIP

SHIELD CHASSIS GROUND PIN 1 SLEEVE

RED AUDIO + PIN 2 TIP

SHIELD CHASSIS GROUND PIN 1 SLEEVE

FUNCTION XLR

CONNECTOR

1/4 IN.

PHONE

PLUG

INTERNAL CONNECTIONS

FIGURE 4

MOUNTING THE 515SBG-18X AND 515SBG-18XF

Mount the 515SBG-18X or 515SBG-18XF as follows:

1. Thread the supplied hexnut all the way down on the mounting
flange.

2. Thread the gooseneck tightly on the flange.

3. Back the hexnut up against the gooseneck, and use a wrench
to tighten the nut firmly against the bottom of the gooseneck.

MOUNTING THE 515SBX ONTO A GOOSENECK

Mount the 515SBGX onto a gooseneck or fixed pipe with a 5/8 in­27 thread as follows:

1. Unscrew the black end cap from the microphone.

2. Remove the thin metal washer and the metal spacer.

3. Re-install the washer by sliding it back onto the cable and up
into the end of the microphone.

4. Slip the cable into the gooseneck or pipe and thread the
microphone firmly to the mount.

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

SHURE Incorporated http://www.shure.com
United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: [phone] U.S. Fax: [phone] Intl Fax: [phone]
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: [phone] Fax: [phone]
Asia, Pacific:
Shure Asia Limited, Phone: [phone] Fax: [phone]

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