Shure 27B1387 manual General, Connections, Operation, Mounting

Model 514B User Guide

GENERAL

The Shure 514B is a low impedance, dynamic, hand-held microphone designed for paging and public address systems. It provides clear, natural voice response and high intelligibility.

The 514B connects to microphone inputs rated at 19 to 300 ￿. It can be used in applications that require long cable lengths, or where severe hum conditions are present. For connection to high impedance inputs, use Shure A95 Series Line Matching Trans- formers.

The microphone is provided with a four-conductor (two shielded) coiled cable and a “Million-Cycle” leaf-type switch designed for constant use under the most rigorous conditions. The 514B fits naturally and comfortably in the hand and is not affected by heat or humidity. The exclusive ARMO-DUR￿case resists mechanical shocks and vibration, and is impervious to oil, fumes, salt spray, ultraviolet radiation, and corrosion.

Features

•	Smooth, extended frequency response from 100 to 6,000 Hz-pro-
•	vides highly intelligible voice response
	“Million-Cycle” leaf-type switch-provides outstanding reliability,
	even under extreme conditions
	￿

CONNECTIONS

Refer to Figure 1 and Table 1 below. The GREEN wire is con- nected to the positive audio input, the WHITE wire is connected to the negative audio input, and the SHIELD is connected to chassis ground. The RED and BLACK leads control the external relay or switching circuit.

	PRESS–TO-TALK
	SWITCH
	CABLE
CARTRIDGE	BLACK
	RED
YELLOW	GREEN
	WHITE
	SHIELD

INTERNAL CONNECTIONS

FIGURE 1

Table 1. Typical Cable-to-Connector Wiring

	WIRE	FUNCTION	XLR	1/4 IN. PHONE
	COLOR		CONNECTOR	JACK
INPUT TYPE
	GREEN	AUDIO +	PIN 2	TIP
BALANCED	WHITE	AUDIO -	PIN 3	RING
	SHIELD	CHASSIS GROUND	PIN 1	SLEEVE

NOTE: The RED and BLACK leads are not part of the audio circuit. These wires provide a contact closure when the press-to-talk switch is depressed. This closure may be used to control an external relay or a transmit/receive circuit.

OPERATION

To operate the microphone, simply hold down the press-to-talk switch and begin speaking. Release the switch when you are fin- ished speaking.

MOUNTING

The 514B is supplied with a mounting bracket to provide a snap-in hang-up for the microphone when it is not in use. The bracket has mounting holes with clearance for No. 8 screws. See Figure 2 below.

•	Tough ARMO-DUR case
• Long-life, neoprene-jacketed, coiled cable
•	Supplied mounting bracket fits hang-up button on back of
	microphone

9.1 mm (23/64 IN.)

46 mm (1-13/16 IN.)

36.5 mm (1-7/16 IN.)

4.7 mm

9.5 mm (3/16 IN.) (3/8 IN.)

MOUNTING HOLES,

CLEARANCE FOR

No. 8 SCREWS

10.3 mm (13/32 IN.)

34.5 mm (1-23/64 IN.)

©2003, Shure Incorporated 27B1387 (Rev. 4)

MOUNTING BRACKET

FIGURE 2

Printed in U.S.A.