Shure orporated MX690J3 User Manual

Wireless Boundary Microphone

The Shure MX690 microphone offers cable-free installation for

corporate boardrooms or other applications requiring exible
congurations. The MX690 operates within the 518–865 MHz
bands and is compatible with Shure SLX wireless systems.

©2007, Shure Incorporated

27EN3240 (Rev. 1)

Model MX690

Printed in U.S.A.

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Features

Sleek, low prole design

Frequency agile, microprocessor controlled transmitter

IR link to SLX receiver for automatic frequency
synchronization

Programmable frequency Group/Channel display

Programmable mute function

Operates on two AA batteries

Compatible with all Shure SLX Wireless systems

Commshield™ technology for protection from RF interference

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Microphone Placement

Place the MX690 within 1.5 m (5 ft.) of a talker. Aim the
microphone toward the talkers and away from loudspeakers and
noise sources. Use one microphone for every two talkers. Pickup
angle with a cardioid cartridge is 130° at –3 dB.

Note: To minimize RF interference, maintain a distance of at
least 0.3 m (1 ft.) between transmitters. In case of interference,
increase the distance between transmitters or change channels.

Receiver

Make sure the receiver is within sight of the transmitter. Do not
place receiver behind a metal barrier or any reective surface.

Refer to the SLX Wireless System User Guide for more
information, or visit www.shure.com.

130º

30m (100ft)

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The low-cut lter attenuates frequencies
below 150 Hz by 6 dB per octave.

Low-Cut Filter

Filter disabled (as supplied)

Low-cut lter

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Battery

Installation

Open the battery compartment
as shown.

Insert two1.5V “AA” batteries.
Make sure the +/– terminals
are properly oriented.

Note: Alkaline batteries last up to
8 hours. Rechargeable, carbon­zinc and zinc-chloride batteries
provide less operating time.

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2.

Power Meter

The battery meter on the
LCD shows remaining
battery life.

Low Power Indicator

Steady Red: Power

low. Replace batteries
immediately

Pulsing Red: Batteries

dead. Transmitter cannot be

turned on until batteries are

replaced.

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Press and hold the ON/OFF PROGRAM button for

approximately 2 seconds. The LCD illuminates.

To turn the transmitter off, press and hold the ON/OFF
PROGRAM button again.

Note: Use the button on the bottom of the transmitter to power it
on without opening the battery compartment.

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Power On/Off

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