SHURE 522 Voice Communication Microphone User Guide
- June 13, 2024
- Shure
Table of Contents
SHURE 522 Voice Communication Microphone
MODEL 522 UNIDIRECTIONAL DYNAMIC BASE STATION MICROPHONE
The Model 522 is a dynamic base station microphone designed especially for radio communications, paging, and dispatching systems. Its cardioid (unidirectional) pickup pattern suppresses unwanted background noise-the type of noise generated by other dispatchers working nearby, by ventilating equipment, or by office machines in the same area. It also eliminates or reduces feedback in public address paging applications. The 522 can be converted to Monitor/Transmit switching with the Shure RK199S Split-Bar Conversion Kit.
FEATURES
- Dual impedance (19 to 300 ohms or High)
- impedance change switch for convenient change-over
- Finger-tip control bar (locking or non-locking action) to actuate microphone circuit and an external relay or control circuit
- Long-life switch to satisfy rigorous requirements of communications and paging systems
- Sturdy, high impact ARMO-DUR® base and micro-phone case
- Adjustable microphone height
- Dependability – under all operating conditions
- Conversion kit available for Monitor/Transmit switching
PRESS-TO-TALK SWITCH OPERATION
The finger-tip control bar can be used as a locking or non-locking switch. To use as a non-locking switch, simply depress the control bar and release after transmission. To use as a locking switch, depress the control bar and pull it forward. To unlock the switch, move the bar back and release.
IMPEDANCE SELECTION
Use the switch located on the under side of the microphone base, near the
cable entry, to select high or low impedance. The microphone is shipped with
the switch in the “HI” position.
Use the low-impedance position for long cable lengths under conditions of
severe hum disturbance. Unlimited cable lengths are possible without
appreciably affecting response or level. Use Shure Model A95 Series Line
Matching Transformers when using a low-impedance microphone line with a high-
impedance amplifier input. These transformers provide a proper impedance match
between a 19 to 300 ohm microphone line and a high-impedance input and are
available with various input and output connectors.
AUDIO CONNECTIONS (See Table 1)
Unbalanced high-impedance operation:
Set the impedance switch to the “HI” position (as shipped). Connect the GREEN
cable lead and the shield to the amplifier or chassis ground. The WHITE cable
lead is the “hot” conductor.
Balanced-line low-impedance operation: Set the impedance switch to the
“LO” position. Connect the shield to the amplifier or chassis ground. The
WHITE and GREEN cable leads are the “hot” conductors.
TABLE 1. CABLE-TO-CONNECTOR WIRING
INPUT TYPE
| WIRE COLOR| FUNCTION| XLR CONNECTOR|
1/4 IN. PHONE PLUG
---|---|---|---|---
UNBALANCED
| WHITE| AUDIO| PIN 2| TIP
GREEN| AUDIO GROUND| PIN 3|
SLEEVE
SHIELD
| CHASSIS GROUND| PIN 1|
SLEEVE
BALANCED
| WHITE| AUDIO +| PIN 2| TIP
GREEN| AUDIO –| PIN 3|
RING
SHIELD
| CHASSIS GROUND| PIN 1|
SLEEVE
LOGIC CONNECTIONS
The RED and BLACK leads may be used to control an external relay or switching
circuit.
OPTIONAL CONVERSION
A split-bar Transmit/Monitor Switch is available for use with transceivers with a receiver squelch circuit. Depressing the Monitor bar disables the receiver squelch circuit so that the operator can determine the presence of signals below the squelch threshold before transmitting. The Monitor switch is either momentary or locking; and the switch can be wired either to ground or to unground the squelch circuit. The Transmit switch bar can be depressed only while the Monitor bar is depressed, thus requiring the operator to verify that the channel is idle before transmitting. The Transmit switch is momentary only and cannot be locked. The Transmit/ Monitor Switch Kit is Shure Model RK199S. General microphone wiring instructions are supplied with the kit, but specific transceiver wiring details must be obtained from the transceiver schematic and/or the manufacturer of the unit.
SPECIFICATIONS
Type
Dynamic
Frequency Response
60 to 11,000 Hz (see Figure 2)
Polar Pattern
Cardioid (unidirectional) – uniform with frequency, symmetrical about axis (see Figure 3)
Impedance
Dual. Microphone rating impedance is 150 ohms (260 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms and “High” for connection to high-impedance microphone inputs. Switch is in high-impedance position as supplied. To change impedance, see sections on impedance Selection and Connections.
SENSITIVITY (AT 1,000 HZ):
Open Circuit Voltage
(Ref. 1V/Pascal
(1 Pa = 94 dB SPL)
LOW HiGH
-57.5 dB -38.5 dB
(1.3 mV) (12 mV)
Switch
Press-to-Talk Switch – locking or nonlocking operation to actuate microphone
circuit and an external relay or control circuit. Microphone circuit normally
shorted in both high and low impedance
impedance Selection Switch – double-pole double- throw slide switch in
microphone base to provide either high- or low-impedance operation
Cartridge Shock Mount
internal rubber vibration-isolator
Cable
2.1 m (7 ft) four-conductor, two conductors shielded non-detachable
Case
Two-tone gray ARMO-DUR® with dull-chrome-plated steel screen
Dimensions
See Figure 4
Net Weight
736 grams (1 Ib 10 oz)
Shipping Weight
1020 grams (2 Ib 4 oz)
REPLACEMENT PARTS
Cartridge …………………………………………………………R89
Cable……………………………………………………………. C31C
On-Off Switch ……………………………………………. RK141S
OPTIONAL CONVERSION PART
Transmit/Monitor Split-Bar Switch Kit…………….. RK199S
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: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
Documents / Resources
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SHURE 522 Voice Communication
Microphone
[pdf] User Guide
522 Voice Communication Microphone, 522, Voice Communication Microphone,
Communication Microphone, Microphone
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