Shure MX692 User manual

Model MX692
User Guide
Printed in U.S.A.
©2004, Shure Incorporated
27A8828 (Rev. 2)
SHURE MX692 WIRELESS BOUNDARY MICROPHONE TRANSMITTER
• Integrated functionality of Microflex
boundary microphone and UC Series
wireless transmitter
• Frequency agile transmitter offers
over 100 user selectable channels for
UA and UB frequency bands; run up
to 32 systems simultaneously
• User programmable touch-sensitive
switch and status LED
• 9V battery-powered with 3-stage
battery life LED indicator
• Thread mount cartridge connection
for easy field replacement
• Internal antenna
• Requires Shure UC4 receiver (sold
separately)

English – 1
TABLE OF CONTENTS: ENGLISH
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
MX692 Features and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MX692 Features and Controls Continued . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Checking and Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Adjusting the Transmitter Gain Level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Changing the Transmitter Group/Channel Settings. . . . . . . . . . . . . . . . . . . . 6
Positioning the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Positioning Multiple Microphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Positioning the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Removing the Grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Additional or Replacement Cartridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
The Internal DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Customizing Microphone Switch Functionality . . . . . . . . . . . . . . . . . . . . . . 13
Tips for Optimum Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Using the MX692 in Large Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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INTRODUCTION
The MX692 wireless boundary microphone is for use in a variety of boardroom, education,
government, and house of worship applications that require a clean, cable-free installation. Ad-
ditionally, the MX692 is useful in retrofit installations where the modification of existing architec-
ture and furnishings is unwelcome, and in facilities where a flexible, mobile audio system is
required.
The user-programmable mute switch and interchangeable microphone cartridges allow cus-
tomization of microphone behavior and audio response to suit many applications. The transmit-
ter antenna is mounted internally, giving the microphone a sleek appearance.
The MX692 integrates a boundary microphone and a wireless transmitter. The transmitter
broadcasts on the UA (782.125–805.750 MHz) and UB (692.500–715.625 MHz) frequency
bands. These frequencies are legal for broadcast in the U.S., Canada, Central and South Amer-
ica, and Australia.
The Shure UC Wireless system divides frequency bands into “groups” and “channels.” Up to
sixteen individual MX692 transmitter/UC4 receiver pairs, each with its own channel, may be as-
signed to a single group. With two frequency bands to choose from, it is possible to run up to 32
microphones simultaneously in a single sound system.

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MX692 FEATURES AND CONTROLS
Microphone Status LED
Microphone is active when lit.
Programmable Touch-sensitive Switch
Touch to mute or activate microphone,
depending on logic settings.
Power/Battery Life Gauge
LED color indicates battery power status.
Power On/Off Switch
Protective Grille
Grille can be removed to access microphone
cartridge and DIP switches.
1
2
3
4
5
MICROFLEX
•
P
H
U
S
•
1
3
4
2
5

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MX692 FEATURES AND CONTROLS CONTINUED
To access gain and channel settings, open the battery compartment door.
Input Attenuation Control
This two position switch lets you select either 0 dB or
20 dB attenuation, depending on the volume of the
talker’s voice.
Transmitter Output Gain Control
Changes the audio level to accommodate various
input volumes. Use the supplied screwdriver to make
adjustments.
Channel Setting Control (green dial)
Rotating the Channel dial changes the Channel
setting. Use the supplied screwdriver to make
adjustments.
Group Setting Control (red dial)
Rotating the Group dial changes the Group setting.
Use the supplied screwdriver to make adjustments.
Battery Compartment
Holds one 9V battery
1
2
3
4
5
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
1
3
4
2
5

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CHECKING AND REPLACING THE BATTERY
To check the battery charge:
1. Turn the transmitter switch to on
2. Verify that one of the battery power LEDs is glowing (see page 3).
3. The amount of battery life remaining is indicated by which LED is lit, as shown in
the following table:
Replacing the battery:
For extended performance, use a 9V lithium battery. Rechargeable, carbon-zinc, and zinc-
chloride batteries are not recommended.
Transmitter LED Color Remaining Operating Time
Green 2 to 8 hours
Amber 45 minutes to 2 hours
Red 45 minutes or less
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
23
1

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ADJUSTING THE TRANSMITTER GAIN LEVEL
If transmitter gain
is set correctly, the
audio LED meter on
the UC4 receiver
should reach amber
during normal speech
and momentarily flash red during the loudest
speech. If transmitter output needs to be in-
creased or decreased, adjust the output gain
control.
Set the input attenuation control switch to 9
dB for normal use (default) or -20 dB for loud
voices (this is rare).
CHANGING THE TRANSMITTER GROUP/CHANNEL SETTINGS
For a wireless transmitter such as the MX692
to communicate with a receiver, the transmitter
and receiver must be communicating on the
same frequency. The frequency is set by chang-
ing the transmitter and receiver “group” and
“channel” settings. For a MX692 transmitter to
communicate with a UC4 receiver, the two must
have matching group and channel settings.
See the Shure website for recommended
group and channel settings for your area.
To change MX692 group and channel set-
tings:
1. Turn the transmitter off.
2. Using the supplied
screwdriver, rotate the
GROUP dial (see
page 4) until the desired
setting is reached. Then
rotate the CHANNEL dial until the desired
setting is reached.
0
-20 dB
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9

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POSITIONING THE MICROPHONE
With the standard cardioid cartridge installed, the
MX692 will pick up audio at conversational volume levels
within 1.5 M (5 ft.) in a 130 degree range.
As a general rule, a single microphone should be
used for every two people speaking.
If a tighter pickup range is required, a supercardioid
cartridge may be used.
< 1.5M (5 FT.)
130°

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POSITIONING MULTIPLE MICROPHONES
In any installation, good vocal pickup can be
achieved by following the positioning rules on page
7. Maintain at least .3 m (1 ft.) separation between
transmitters. If you experience transmitter interfer-
ence, increase the distance between transmitters, or
change the channel of one transmitter/receiver pair.
For information on receiver setup and positioning,
see the UC4 Wireless System user guide.

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POSITIONING THE RECEIVER
The UC4 receiver may be rack mounted. See page 14 for information on systems with
multiple transmitters and receivers.
¹ Maximum distance depends on signal absorption, reflection, and interference.
MX692
>2 m (5 ft.)
<75 m (250 ft.) typical¹
UC4