Shure 15SB-GI8, 515SBG dimensions General, Mounting, Connections

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i

MODELS 5 1 5 s ~ ~ and 515SB-GI8

U N I D Y N E ~B

UNIDIRECTIONAL DYNAMIC MICROPHONES

GENERAL

The Shure Models 515SBG and 515SB-GI8 UNI- DYNE'?B Microphones are low-impedance units de- signed specifically for flexible gooseneck application. The microphones are moving coil units providing good reproduction of music and voice.

These microphones are particularly suitable for use in language lab systems, paging applications, and base station communications. They are highly recom- mended for talkback and cuing from professional control rooms in TV, film, and recording studios, and other uses demanding a customized installation with concealed cables.

Features:

True cardioid pickup pattern: symmetrical about axis and uniform at all frequencies

Response especially effective for announcing, narration, paging and music

Cartridge shock-mounted for quiet operation

RBuilt-in, non-locking, push-to-talk switch con- trols both microphone circuit and relay or control circuit

RDependability and ruggedness under all oper- ating conditions

A 457 mm (18 in.) flexible gooseneck and a con- venient mounting flange supplied with the Model 515SB-GI 8

MOUNTING

To mount the 515SBG microphone on a gooseneck having a 5/8"-27thread, unscrew black end cap from microphone (see Figure 1-A), remove adjacent thin metal washer and one metal spacer from terminating end of cable. Slide the thin metal washer removed previously onto cable up into end of microphone. Slip gooseneck over cable and install into end of micro- phone.

L 3 7 3 ,, Dl,				127/32 IN 1
( 1 - 5 / 3 2 IN1
		FIGURE 1-A
159 mm ---	-	T --	476 m m	-	1 3m
(6-114 I N )			(18 3/4 IN)
L 3 7 3 m m OIA	3 HOLES [45mm(177 IN) D l A ]
(1-15/32 I N )	EQUALLY SPACED ON
	159 mm ( 5 / 8 I N ) RADIUS			CIRCLE -
		MODEL 515SB-Gi8
	OVERALL DIMENSIONS
		FIGURE 1-B
Copyright 1980, Shure Brothers Inc.
27A1489 (TD)					(OVER)

MODEL 515SB-GI8

CONNECTIONS

The microphones are low impedance for connec- tion to microphone inputs rated at 19 to 300 ohms. The balanced line low-impedance connection is rec- ommended where long cable lengths are required or under conditions of severe hum disturbance. The permissible cable length is practically unlimited, since neither response nor level is appreciably affected. With reference to Figure 2, BLACK and RED are the "hot" conductors for balanced line connections to a low-impedance amplifier, the shield is connected to the amplifier ground. For unbalanced low-impedance operation, the shield and RED lead should be con- nected together. The BLACK lead is then the "hot" lead. The GREEN and WHITE conductors are used to control an external relay or control circuit. It should be noted that hum susceptibility is increased in un- balanced low-impedance operation.

BUTTON

MOVEMENT

.;-CODED

TERMINAL

GREEN

---------- ---.

' BLACK

,! : RED ____ - _

& -------

PHASING: POSITIVE PRESSURE ON DIAPHRAGM SHALL CAUSE A POSITIVE VOLTAGE ON THE RED CONDUCTOR

INTERNAL CONNECTIONS

FllGURE 2

Shure Model A95 Series Line Matching Transformers are available for use in those cases where a low-imped- ance microphone line is desirable but the associated amplifier has a high-impedance input. These trans- formers provide a proper impedance match between a 19-300 ohm microphone line and a high-impedance input, and are available with various input and output connectors.

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

Printed i n U.S.A.