Shure 450 User Manual

Page 2

TRANSMIT/MONITOR SWITCH CONVERSION KIT
When the optional split-bar Transmit/Monitor Switch Conver-

sion Kit is installed, the Monitor bar must be depressed before

the Transmit switch can be depressed, requiring the operator

to verify that the channel is open before transmitting. The

Monitor bar can be locked in the “on” position. The Transmit

bar is momentary and cannot be locked.
NOTE: Transceiver wiring information must be obtained from

the transceiver schematic and/or the manufacturer.

SPECIFICATIONS
Type

Dynamic

Frequency Response

200 to 5,000 Hz (see Figure 2)

ББББББББББББББ

TYPICAL FREQUENCY RESPONSE

FIGURE 2

Polar Pattern

Omnidirectional

Impedance (at 1,000 Hz)

High Impedance: 30,000 Ω
Low Impedance: 225 Ω

Recommended Load Impedance

High Impedance: 100,000 Ω
Low Impedance: 1,000 Ω

Output Level (at 1,000 Hz, Open Circuit Voltage)

High Impedance

Low Impedance

–35.0 dBV/Pa*

–57.0 dBV/Pa*

(17.8 mV)

(1.4 mV)

*1 Pa = 94 dB SPL

Switches

Locking Press-to-Talk Switch: Activates microphone cir-

cuit and an external relay or control circuit. The micro-

phone circuit is normally shorted.
Impedance Selection Switch: Double-pole, double-throw

slide switch located in the base of the microphone.

Cable

2.1 m (7 ft.) four-conductor, two conductors shielded,

non-detachable

Case

Two-tone gray ARMO-DUR

OVERALL DIMENSIONS

FIGURE 3

Net Weight

737 grams (1 lb., 10 oz.)

Shipping Weight

1020 grams (2 lb., 4 oz.)

Certification

Conforms to European Union directives, eligible to bear
CE marking; meets European Union EMC Immunity Re-
quirements (EN 50082–1, 1992).

REPLACEMENT PARTS
Cartridge

R96

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

Cable

C31C

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

On/Off Switch

RK141S

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

OPTIONAL ACCESSORIES
Transmit/Monitor Split-Bar Switch Kit

RK199S

. . . . . . . .

SHURE Incorporated http://www.shure.com
United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Intl Fax: 847-600-6446
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414
Asia, Pacific:
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055