Features, PRESS-TO-TALK Switch Operation

Model 522 User Guide

MODEL 522 UNIDIRECTIONAL DYNAMIC BASE STATION MICROPHONE

The Model 522 is a dynamic base station microphone designed especially for radio communications, paging, and dispatching sys- tems. Its cardioid (unidirectional) pickup pattern suppresses un- wanted 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)

•lmpedance 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 com- munications and paging systems

•Sturdy, high impact ARMO-DURbase 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-lock- ing 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

alow-impedance microphone line with a high-impedance amplifier input. These transformers provide a proper impedance match be- tween a 19 to 300 ohm microphone line and a high-impedance in- put 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). Con- nect the GREEN cable lead and the shield to the amplifier or chas- sis 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	FUNCTION	XLR	1/4 IN. PHONE
	COLOR		CONNECTOR	PLUG

	WHITE	AUDIO	PIN 2	TIP

UNBALANCED	GREEN	AUDIO GROUND	PIN 3	SLEEVE

	SHIELD	CHASSIS GROUND	PIN 1	SLEEVE

	WHITE	AUDIO +	PIN 2	TIP

BALANCED	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.

INTERNAL CONNECTIONS

FIGURE 1

OPTIONAL CONVERSION

A split-bar Transmit/Monitor Switch is available for use with transceivers with a receiver squelch circuit. Depressing the Moni- tor bar disables the receiver squelch circuit so that the operator can

Printed in U.S.A.

522 specifications

The Shure 522 is a dynamic microphone well-suited for a variety of vocal applications, particularly in broadcasting, public speaking, and professional recording. Shure has long been recognized for producing high-quality audio equipment, and the model 522 continues this tradition with a robust design and impressive audio performance.

One of the primary features of the Shure 522 is its dynamic microphone element, which is known for its durability and reliability in different environments. Unlike condenser microphones, dynamic microphones do not require phantom power, making them ideal for live settings where convenience and portability are prioritized. The 522 is designed to handle high sound pressure levels without distortion, allowing it to capture loud sources such as vocals or instruments with clarity.

Signal processing technology is another significant aspect of the Shure 522. It incorporates an internal shock mount system to minimize handling noise, making it suitable for handheld applications. This feature is essential for broadcast professionals who need to maintain high audio quality while maneuvering the microphone. Additionally, the microphone's frequency response is tailored to enhance vocal presence, ensuring that speech remains intelligible and clear even in noisy environments.

The build quality of the Shure 522 is another strong selling point. Constructed from durable materials, this microphone can withstand the rigors of regular use. Its classic design, combined with a lightweight yet sturdy frame, ensures that users can enjoy a comfortable grip while minimizing fatigue during extended periods of use. The microphone’s cardioid polar pattern contributes to noise isolation, focusing on the sound directly in front while rejecting off-axis noise. This characteristic is invaluable in crowded venues or any setting where background noise may be an issue.

Overall, the Shure 522 embodies a blend of advanced technology, practical design, and user-focused features. With its dynamic element, noise-reducing capabilities, and rugged construction, it stands as a reliable choice for anyone requiring a high-performance microphone for both studio and live applications. Whether utilized by amateur enthusiasts or seasoned professionals, the Shure 522 continues to deliver exceptional sound clarity, making it an excellent addition to any audio toolkit.

Shure manual Model 522 Unidirectional Dynamic Base Station Microphone, Features

Models: 522