Model MX690
Wireless Boundary Microphone
The Shure MX690 microphone offers cable-free installation for
corporate boardrooms or other applications requiring flexible
configurations. The MX690 operates within the 518–865 MHz
bands and is compatible with Shure SLX wireless systems.
©2008 Shure Incorporated
Printed in U.S.A.
27EN3240 (Rev. 3)
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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.
130º
Receiver
Make sure the receiver is within sight of the transmitter. Do not
place receiver behind a metal barrier or any reflective surface.
Refer to the SLX Wireless System User Guide for more
30m (100ft)
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Low-Cut Filter
The low-cut filter attenuates frequencies
below 150 Hz by 6 dB per octave.
Filter disabled (as supplied)
Low-cut filter
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4
Battery
Installation
1. Open the battery compartment
as shown.
2. Insert two1.5V “AA” batteries.
Make sure the +/– terminals
are properly oriented.
Note: Alkaline batteries last up to
8 hours. Rechargeable, carbon-
zinc and zinc-chloride batteries
provide less operating time.
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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Power On/Off
1. Press and hold the ON/OFF PROGRAMbutton for
approximately 2 seconds. The LCD illuminates.
2. To turn the transmitter off, press and hold the ON/OFF
PROGRAMbutton again.
Note: Use the button on the bottom of the transmitter to power it
on without opening the battery compartment.
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Mute Button
The mute button can be configured for toggle or momentary
operation.
Toggle (as supplied)
The PUSHbutton toggles the microphone between active and
muted states.
NOTE: The microphone always powers up in the active state.
Momentary
There are two types of momentary operation:
Push-to-Mute: The microphone is muted only while the button is
pressed and held.
Push-to-Talk: The microphone is active only while the button is
pressed and held.
To change between toggle and momentary:
Hold the PUSHbutton and
Hold
press the SELECTbutton.
(Test the microphone to
confirm the change.)
To change between push-to-talk and push-to-mute:
1. Set the button for
momentary operation.
Hold
2. Hold the SELECTbutton
and press the PUSHbutton.
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Mute Indicator
The bi-color LED on the top of the microphone indicates whether
the microphone is active or muted.
The LED can also be set to flash when muted.
Display Mode
Status Indicator
Active = Green
Steady
(as supplied)
Muted = Red
Flashing
Active = Green
Muted = Flashing Green
To toggle between off and flashing, press PUSHand ON/OFF
PROGRAMsimultaneously.
+
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Locking Settings
Press ON/OFF PROGRAMand
SELECTsimultaneously to lock
or unlock transmitter settings.
When locked, the current
settings cannot be manually
changed.
Note: Locking the transmitter
settings does not disable IR
frequency synchronization or
the High Pass/Low Cut filter.
LOGIC MODE
To use with a logic enabled
receiver, you must perform
an automatic sync. The LCD
flashes “log” during sync. Once
in logic mode, the LCD flashes
“log” when powered up.
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Automatic Frequency Synchronization
1. Power off all transmitters.
2. Power on all receivers.
3. Begin with the first transmitter. Open the battery cover and
power it on.
4. Aim the IR sensor at the first receiver IR port. The transmitter
should be no more than 15 cm (6 in.) from the receiver. Press
and hold the receiver SYNCbutton to send group and channel
data to the transmitter. The red LED on the transmitter will stop
flashing when programming is complete.
5. Power off the first transmitter and repeat the synchronization
with each additional transmitter and receiver pair.
Manual Frequency Synchronization
1. Press and hold the transmitter SELECTbutton until the desired
group number appears.
2. Press SELECTagain and release it when the desired channel
number appears.
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Tips for Optimum Performance
• Maintain a direct line of sight between the transmitter and
receiver antennas.
• Avoid placing the transmitter on metal surfaces.
• Avoid placing laptop computers or other obstructions in front
of the microphone during use.
• Only use with a Shure SLX4 wireless receiver.
Troubleshooting
If you encounter difficulty with the SLX Wireless System:
• Make sure both the transmitter and the receiver are turned on.
• Replace the battery if the battery LED is red.
• Make sure the Group/Channel settings for each transmitter-
receiver pair are identical.
• Make sure there is an unobstructed line of sight between the
transmitter and receiver.
• If necessary, reposition the receiver or decrease the distance
between transmitter and receiver.
• Remove local sources of RF interference, such as computers
or lighting equipment.
• Remove metal objects within 0.3 m (1 ft.) of the transmitter
Note: Refer to the SLX Wireless System User Guide for
complete troubleshooting procedures.
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Frequency Selection
Shure offers wireless systems in a selection of bands that
conform to the different government regulations of specific
nations or geographic regions. These regulations help limit radio
frequency (RF) interference among different wireless devices and
prevent interference with local public communications channels,
such as television and emergency broadcasts.
The system’s band and frequency range are identified on the
receiver and transmitter. For example, “H4 518-578 MHz.”
For information on bands available in your area, consult your
local dealer or phone Shure. More information is also available at
Shure’s website (www.shure.com).
Licensing
Licensing of Shure wireless microphone equipment is the
user’s responsibility, and licensability depends on the user’s
classification and application, and on the selected frequency.
Shure strongly urges the user to contact the appropriate
telecommunications authority concerning proper licensing, and
before choosing and ordering frequencies.
Changes or modifications not expressly approved by Shure
Incorporated could void your authority to operate this equipment.
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Frequency Bands
Band
H5
J3
Range
Output
10 mW
28 mW
10 mW
10 mW
10 mW
10 mW
10 mW
10 mW
10 mW
10 mW
10 mW
518–542 MHz
572–596 MHz
638–662 MHz
702–726 MHz
794–806 MHz
800–820 MHz
838–865 MHz
806–810 MHz
740–752 MHz
470–494 MHz
494–518 MHz
L4
P4
R13
R5
S6
JB
Q4
G4
G5
Note: This radio apparatus may be capable of operating on some
frequencies not authorized in your region. Please contact your
national authority to obtain information on authorized frequencies
for wireless microphone products in your region.
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Master List Frequencies
The Master List is an index of all frequencies in a band, including
those not assigned to a Group or Channel. The Master List can
only be accessed through the receiver, so the transmitter must
be synchronized via the IR port. When a Master List frequency is
in use, “MASTER LIST” appears on the display. Refer to the SLX
Wireless System User Guide for more information.
Note: Wireless devices such as cellular phones and two-way
radios may interfere with wireless microphones. Keep these and
other potential sources of interference away from the transmitters
and receivers.
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Transmitter Specifications
Operating Range
30 m (100 ft.)
Note: Actual range depends on RF signal absorption,
reflection, and interference
Frequency Stability
±10 ppm
Maximum Frequency Deviation
45 kHz
Oscillator Type
Phase-locked loop (PLL) controlled synthesizer
Power Requirements
3V (2 AA alkaline or rechargeable batteries)
Battery Life
≥8 hours (alkaline)
Power Consumption
130 mA, ±15 mA
Operating Temperature Range
-18–57 °C (0–135 °F)
Note: Battery may limit this range
Dimensions
43 mmH x 87 mmW x 148 mmD (1 11/16 x 3 3/8 x 5 13/16 in.)
Weight
Net: 318 g (11.2 oz)
Packaged: 516 g (18.2 oz)
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Microphone Specifications
Type
Condenser (electret bias)
Frequency Response
50–17000 Hz
Polar Pattern (at 1 kHz)
Cardioid
Sensitivity (at 1 kHz , open circuit voltage)
–33 dBV/Pa (22 mV)
1 Pascal=94 dB SPL
Dynamic Range (1 kΩ load at 1 kHz)
96 dB
Common Mode Rejection (10 Hz to 100 kHz)
45 dB minimum
Preamplifier Output Clipping Level (1% THD)
–6 dBV (0.5 V)
Polarity
Positive sound pressure on diaphragm produces positive
voltage on pin 2 relative to pin 3 of output XLR connector or tip
of 1/4” phone plug.
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Certification
Certified to FCC Part 74 (FCC ID: DD4MX690).
Certified by IC in Canada under RSS-123 and RSS-102 (IC:
616A-MX690).
Meets essential requirements of the European R&TTE Directive
99/5/EC (ETSI EN 300-422 Parts 1 & 2, EN 301 489 Parts 1 & 9)
and eligible to carry the CE marking.
Changes or modifications not expressly approved by Shure
Incorporated could void your authority to operate this equipment.
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EU Declaration of Conformity
EU DECLARATION OF CONFORMITY
We,
of
Shure Incorporated
5800 Touhy Avenue
Niles, Illinois, 60714-4608 U.S.A.
Phone: (847) 600-2000
Declare under our sole responsibility that the following product
Model: MX690
Description: Wireless Microphone Transmitter
conforms to the essential requirements and other relevant previsions of the R&TTE
Directive (1999/5/EC).
The product complies with the following product family, harmonized or national
standards:
EN 301 489-1 V1.4.1 (2002-08)
EN 301 489-9 V1.2.1 (2002-08)
EN 300 422-1 V1.2.2 (2000-08)
EN 300 422-2 V1.1.1 (2000-08)
The technical documentation is kept at:
Shure Incorporated, Corporate Quality Engineering Division
SHURE Europe GmbH, EMEA Approval
Manufacturer: Shure Incorporated
Signed: __________________________________ Date: 20 December 2006
Name and Title: Craig Kozokar, EMC Project Engineer, Corporate Quality Engineering
Division
European Representative: SHURE Europe GmbH
Signed: __________________________________ Date: 20 December 2006
Name and Title: Wolfgang Bilz, Dipl. Ing. (FH), EMEA Approval
SHURE Europe GmbH
Headquarters Europe, Middle East & Africa
Wannenäcker Str. 28
D-74078 Heilbronn, Germany
Phone: +49 - (0)7131 - 7214 - 0
Fax: +49 - (0)7131 - 7214 - 14
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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 Int’l 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
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