Shure ULXD4E K51 User manual

ULX-D
Wireless Microphone System
User guide for Shure ULXD Single wireless system. Includes setup instructions, specifications, and troubleshooting.
Version: 6.1 (2021-I)

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Table of Contents
ULX-D Wireless Microphone System 4
Quickstart Instructions 4
General Description 5
Features 5
Hardware Interface 6
Receiver 6
Transmitters 9
Boundary and Gooseneck Base Transmitters 11
Advanced Transmitter Features 12
Menu Screens 13
Adjusting Receiver Display Brightness and Contrast 15
Home Screen Display Options 15
Editing Receiver Channel Name 17
Setting Regional TV Format 17
Locking Controls and Settings 17
Batteries 18
Battery Indicator 18
Shure SB900 Series Rechargeable Battery 19
Important Tips for Care and Storage of Shure Recharge
able Batteries 19
Installing the Battery Contact Cover 19
Audio 20
Setting Receiver Gain 20
Muting a Receiver Channel Audio Output 20
Transmitter Input Clip 21
Audio Signal Encryption 21
Scan and Sync 22
Multiple System Setup 23
Manual Frequency Selection 24
Transmitter IR Presets 24
Creating a System Preset 24
RF 24
Transmitter RF Power 25
Interference Detection 25
Advanced RF 25
Networking Receivers 26
Automatic IP Addressing 26
Manual IP Addressing 26
Device ID 26
High Density Mode 26
System Reset 27
Firmware 27
Firmware Versions 27
Updating the Receiver 27
Updating the Transmitter 28
Managing Your System with Shure Software 28
Troubleshooting 28
Power 29
Gain 29
Cables 29
Interface Locks 29
Encryption Mismatch 29
Tx Battery Hot 29
Radio Frequency (RF) 29
Contact Customer Support 30
Accessories 30
Furnished Accessories 30
Optional Accessories 32

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Specifications 33
Receiver Output Level 34
ULXD1 35
ULXD2 36
Tables and Diagrams 37
Batteries 38
Frequency Range and Transmitter Output Power 38
Frequencies for European Countries 40
IMPORTANT SAFETY INSTRUCTIONS 46
WARNING 47
Important Product Information 48
LICENSING INFORMATION 48
Australia Warning for Wireless 48
Certifications 48
Information to the user 49

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ULX-D
Wireless Microphone System
Quickstart Instructions

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General Description
Shure ULX-D Digital Wireless offers uncompromising 24bit audio quality and RF performance, with intelligent, encryptionen
abled hardware, flexible receiver options, and advanced rechargeability options for professional sound reinforcement.
A breakthrough in wireless audio quality, Shure digital processing enables ULX-D to deliver the purest reproduction of source
material ever available in a wireless system, with a wide selection of trusted Shure microphones to choose from. Extended 20
Hz – 20 kHz frequency range and flat response captures every detail with clarity, presence, and incredibly accurate low end
and transient response. With greater than 120 dB, ULXD delivers wide dynamic range for excellent signaltonoise perfor
mance. Optimized for any input source, ULX-D eliminates the need for transmitter gain adjustments.
ULX-D sets a new and unprecedented standard for spectral efficiency and signal stability. The intermodulation performance of
ULXD is an incredible advancement in wireless performance, enabling a dramatic increase in the number of simultaneous ac
tive transmitters on one TV channel. Rocksolid RF signal with zero audio artifacts extends over the entire range. For applica
tions where secure wireless transmission is required, ULX-D offers Advanced Encryption Standard (AES) 256-bit encrypted
signal for unbreakable privacy.
For scalability and modular flexibility, ULX-D receivers come in single, dual, and even quad channel versions. The dual and
quad channel receivers offer conveniences such as RF cascade, internal power supply, bodypack frequency diversity, audio
output channel summing, and Dante digital networking for multi-channel audio over Ethernet. All receivers offer High-Density
mode for applications where high channel counts are needed, greatly increasing the amount of simultaneous channels possi
ble over one frequency band.
Advanced Lithium-ion rechargeability provides extended transmitter battery life over alkaline batteries, battery life metering in
hours and minutes accurate to within 15 minutes, and detailed tracking of battery health status.
Generations ahead of any other available system in its class, ULX-D brings a new level of performance to professional sound
reinforcement.
Features
Uncompromising Professional Digital Wireless
24-bit/48 KHz digital audio that exceeds all other systems in accurate reproduction of the source material
20 Hz – 20 KHz frequency range with flat response
Greater than 120 dB dynamic range for excellent signal-to-noise performance
Advanced Encryption Standard (AES-256) for any application where secure transmission is needed:
AES algorithm used in Shure ULX-D Wireless has been validated (validation no: 2552) by the National Institute of
Standards and Technology (NIST) as conforming to the Advanced Encryption Standard (AES) Algorithm, as specified
in Federal Information Processing Standard (FIPS) Publication 197, Advanced Encryption Standard
Added benefit of eliminating stray RF interference by allowing only encrypted signal through to the receiver
Built-in limiter circuitry prevents digital audio clipping from excessive signal levels.
60 dB of adjustable system gain easily accessible from the receiver front panel
No transmitter gain adjustments needed - optimized for any input source
Wide selection of trusted Shure Microphones
Extremely Efficient and Reliable RF Performance
Up to 64 MHz overall tuning range (region dependent)
Minimized intermodulation distortion results in significantly more channels on air, setting the bar for wireless performance
in crowded RF environments
17 active transmitters in one 6 MHz TV channel
22 active transmitters in one 8 MHz TV channel
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High Density mode enables up to 47 active transmitters in one 6 MHz TV channel (63 in one 8 MHz TV channel), with
no audio quality degradation
Over 60 compatible channels on one frequency band
Rocksolid signal stability with no audio artifacts extends over the entire 100 meter lineofsight range using standard sup
plied dipole antennas
Selectable 1, 10, and 20 mW transmitter RF output power (region dependent)
Optimized scanning automatically finds, prioritizes, and selects the cleanest frequencies available
Rugged, Intelligent Hardware
Optimized scanning automatically finds and deploys the cleanest frequencies available
Proprietary Shure Gain Ranging optimizes system dynamic range for any input source, eliminating the need for transmitter
gain adjustments
Up to 60 dB of adjustable system gain is easily accessible from the receiver front panel
Networkable receiver simplifies setup across multiple channels
Compatible with external controllers such as AMX and Creston. Cross-subnet control enabled for management between
multiple facilities or venues.
Rugged metal housing on both transmitters and receiver
Interference detection and alerts provide instant confirmation when interference is present
Upgraded LCD screens with adjustable contrast and brightness on both transmitters and receivers
Advanced Rechargeability - Shure Rechargeable Battery
Lithium-Ion chemistry and intelligent Shure battery circuitry results in rechargeable batteries with no memory effect.
The battery can be recharged at any time; a complete discharge is never necessary
Adapted from industry-leading Axient rechargeable technology
Lithium-Ion chemistry and intelligent Shure battery circuitry results in rechargeable batteries with zero memory effect and
precision metering
AA alkaline backwards compatibility
Hardware Interface
Receiver
Front Panel
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①Sync Button
Press the sync button while the receiver and transmitter IR windows are aligned to transfer settings from the receiver to the
transmitter
②Infrared (IR) Sync Window
Sends IR signal to the transmitter for sync
③Network Icon
Illuminates when the receiver is connected with other Shure devices on the network. IP Address must be valid to enable
networked control
④Encryption Icon
Illuminates when AES-256 encryption is activated: Utilities > Encryption
Note: Encryption is not configurable for all units.
⑤LCD Panel
Displays settings and parameters
⑥Scan Button
Press to find the best channel or group
⑦Menu Navigation Buttons
Use to select and navigate through parameter menus
⑧Control Wheel
Push to select menu items for editing, turn to edit a parameter value
⑨RF Diversity LEDs
Indicate antenna status:
Blue = normal RF signal between the receiver and transmitter
Red = interference detected
Off = No RF connection between the receiver and transmitter
Note: the receiver will not output audio unless one blue LED is illuminated
⑩RF Signal Strength LEDs
Indicate the RF signal strength from the transmitter:
Amber = Normal (-90 to -70 dBm)
Red = Overload (greater than -25 dBm)
⑪Audio LEDs
Indicate average and peak audio levels:
LED Audio Signal Level Description
Red (6) -0.1 dBFS Overload/ limiter

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LED Audio Signal Level Description
Yellow (5) -6 dBFS
Normal peaks
Yellow (4) -12 dBFS
Green (3) -20 dBFS
Signal PresentGreen (2) -30 dBFS
Green (1) -40 dBFS
⑫Gain Buttons
Adjust channel gain
⑬Power Switch
Powers the unit on or off
Back Panel
①RF Antenna Diversity Input Jack (2)
For antenna A and antenna B.
②Power Supply Jack
Connect the supplied 15 V DC external power supply
③Network Speed LED (Amber)
Off = 10 Mbps
On = 100 Mbps
④Ethernet Port
Connect to an Ethernet network to enable remote control and monitoring
Note: Use shielded Cat5e or better Ethernet cables for VHF (V50 and V51) to ensure reliable network performance.

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⑤Network Status LED (Green)
Off = no network link
On = network link active
Flashing = network link active, flash rate corresponds to traffic volume
⑥Mic/Line Switch
Applies a 30 dB pad in mic position (XLR output only)
⑦Balanced XLR Audio Output
Connect to a mic or line level input
⑧Balanced 1/4" (6.35 mm) TRS Audio Output
Connect to a mic or line level input
Transmitters
①Power LED
Green = unit is powered on
Red = low battery or battery error (see Troubleshooting)
Amber = power switch is disabled
②On/Off Switch
Powers the unit on or off.
③SMA Connector
Connection point for RF antenna.
④LCD Display:
View menu screens and settings. Press any control button to activate the backlight.
⑤Infrared (IR) Port
Align with the receiver IR port during an IR sync for automated transmitter programming.
⑥Menu Navigation Buttons
Use to move through parameter menus and change values.
exit Acts as a 'back' button to return to previous menus or parameters without confirming a value change
enter Enters menu screens and confirms parameter changes
▼▲ Use to scroll through menu screens and to change parameter values
⑦Battery Compartment
Requires Shure rechargeable battery or 2 AA batteries.

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⑧AA Battery Adapter
Handheld: rotate and store in the battery compartment to use a Shure rechargeable battery
Bodypack: remove to accommodate a Shure rechargeable battery
⑨Bodypack Antenna
For RF signal transmission.
⑩Integrated Antenna
For RF signal transmission.
⑪Microphone Cartridge
See Optional Accessories for a list of compatible cartridges.
⑫TA4M / LEMO Input Jack
Connects to a microphone or instrument cable.

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Boundary and Gooseneck Base Transmitters
①Power Button
Press to power on; press and hold to power off.
②Mute/Active Button
Four settings are available for the mute/active button:
Toggle: Press to switch between active and mute states
Push-to-Mute: Hold button to mute microphone
Push-to-Talk: Hold button to activate microphone
Disabled: Button functionality off
③Mute LED
Indicates whether microphone is active or muted. The following settings are available:
Active Muted
Green* Red*
Red Off
Red Flashing red
*MX400R series gooseneck microphones (red LED) do not offer this setting.
④Low-Battery LED
Off = More than 30 minutes of battery life remain
On (red) = Less than 30 minutes of battery life remain

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On (green) = Microphone docked on charging station
On (amber) = Battery is missing or is not inserted correctly
⑤Infrared (IR) Port
Align with receiver IR port to send settings to transmitter.
⑥Charge Connector
Connects to networked chargers and USB power supply.
⑦Gooseneck Microphone
ULXD8 base fits 5", 10", and 15" Microflex series microphones, available in single or dualflex and with bi-color or red-only
LEDs.
Advanced Transmitter Features
RF MUTE
Use this to turn on a transmitter without interfering with the RF spectrum.
Press and hold exit during power-on until RF MUTED is displayed. To un-mute, restart the transmitter.
MIC.OFFSET
MIC.OFFSET compensates for signal level differences between transmitters that share the same receiver channel.
Set the offset gain on a low signal level transmitter to match a louder transmitter: UTILITY > MIC.OFFSET
Note: For normal gain adjustments, use the receiver gain buttons.
Transmitter Audio Mute Mode
Mute Mode reconfigures the transmitter power switch to act a mute switch for the audio. Using the switch, the audio can be
easily turned on or muted by presenters, sports referees, or anyone who periodically needs to speak. When the audio is muted,
the transmitter RF signal remains on and ready at all times.
Note: Mute Mode can be selected as an IR PRESET option.
To set a transmitter to Mute Mode:
From the transmitter menu: UTILITY > MUTE MODE
Use the arrows to select ON or OFF.
Press enter to save.
Tip: The transmitter LED turns red when audio is muted and turns green when audio is enabled. The display of the transmitter
will show AUDIO MUTED and the receiver display will show Tx Muted.
Note: Mute Mode must be set to OFF in order to use the power switch to turn off the transmitter.

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Menu Screens
Receiver Channel
①Receiver Information
Use DEVICE UTILITIES > HOME INFO to change the home screen display.
②Gain Setting
−18 to +42 dB, or Mute.
③Mic. Offset Indicator
Indicates offset gain is added to the transmitter.
④Transmitter Settings
The following information cycles when a transmitter is tuned to the receiver's frequency:
Transmitter Type
Input Pad (Bodypack only)
RF Power Level
Transmitter Lock Status
Transmitter Mute Status
⑤Battery Runtime Indicator
Shure rechargeable battery: runtime is displayed in minutes remaining.
AA batteries: runtime is displayed with a 5-bar indicator.
⑥TV Channel
Displays the TV channel that contains the tuned frequency.
⑦High Density Mode Icon
Displayed when High Density mode is enabled.
Transmitter Status
The following text or icons report transmitter status to the receiver screen:

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Display Icon Transmitter Status
Bodypack input is attenuated 12 dB
Offset gain is added to the transmitter
Lo 1 mW RF power level
Nm 10 mW RF power level
Hi 20 mW RF power level
MMenu is locked
PPower is locked
TxMuted Displayed when the transmitter audio is set to off using the MUTE MODE feature
-No Tx- No RF connection between a receiver and transmitter or transmitter OFF
Transmitter
①Transmitter Information
Scroll ▲▼ at the home screen to change the display
②Power Lock Indicator
Indicates power switch is disabled
③Transmitter Audio Muted Indicator
Displayed when the transmitter audio is set to off using the MUTE MODE feature.
④Battery Runtime Indicator
Shure rechargeable battery: runtime is displayed in hours:minutes remaining
AA Batteries: runtime is displayed with a 5-bar indicator
⑤Menu Lock Indicator
Indicates menu navigation buttons are disabled

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⑥Mic. Offset
Displays microphone offset gain value
⑦RF Power
Displays RF power setting
⑧Bodypack Input Pad
The input signal is attenuated 12 dB
⑨Encryption Icon
Indicates encryption is enabled on the receiver and has been transferred to the transmitter from a sync
Adjusting Receiver Display Brightness and Contrast
Adjust BRIGHTNESS and CONTRAST settings to improve visibility in challenging lighting environments.
From the receiver menu: DEVICE UTILITIES > DISPLAY
Press the control wheel to select CONTRAST or BRIGHTNESS.
Turn the control to adjust the selected parameter.
Press ENTER to save changes.
Home Screen Display Options
Receiver
The HOME INFO menu provides options to change the information shown on the receiver home screen:
DEVICE UTILITIES > HOME INFO
Use the control wheel to select one of the following screen displays.
Receiver home screen view 1
Receiver home screen view 2

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Receiver home screen view 3
Transmitter
Home Screen: Press the ▲▼ arrows at the home menu to display one of the following screens:
Transmitter home screen view 1
Transmitter home screen view 2
Transmitter home screen view 3

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Editing Receiver Channel Name
To edit a receiver channel name, choose EDIT NAME from the menu.
Turn the control wheel to edit a highlighted character
Press the control wheel to advance to the next character
Press ENTER to save changes
Note: The channel name is transferred to a transmitter during a sync.
Setting Regional TV Format
To ensure accurate display of TV channel information, set the TV FORMAT to match the TV channel bandwidth in the region
where the receiver is operating. TV bandwidth varies globally, so check local regulations to determine the regional TV band
width.
The following TV FORMAT options are available:
6 MHz
7 MHz
8 MHz
6 MHz JAPAN
NO TV (use to turn off TV channel display or in regions where TV channels are not applicable)
To set the TV FORMAT:
Menu: DEVICE UTILITIES > ADVANCED RF > TV FORMAT
Use the control wheel to select a TV FORMAT option.
Press ENTER to save.
Locking Controls and Settings
Use the LOCK feature to prevent accidental or unauthorized changes to the hardware. Attempting to access a locked feature
will display the following message:
Receiver
Menu path: UTILITIES > LOCK
MENU: All menu paths are inaccessible. To unlock, press the EXIT button, turn the control wheel to select UNLOCKED and
press ENTER to save.
GAIN: Gain adjustment is locked
POWER: Power switch is disabled
SCAN: Cannot perform a group scan
SYNC: Cannot sync devices

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Transmitter
Menu path: UTILITY > LOCK
MENU: All menu paths are inaccessible. To unlock, press the ENTER button four (4) times to pass through the following
screens: UTILITY > LOCK > MENU UNLOCK
POWER: Power switch is disabled
Quick-Lock Option: To turn on the transmitter with its power and menu navigation buttons locked, press and hold the ▲ but
ton during power-on until the locked message is displayed.
To unlock, turn the power switch to the off position, then press and hold the ▲ button while turning the power switch to the on
position.
Batteries
The transmitter runs on two AA batteries or a Shure SB900 series rechargeable battery. Use the included AA battery adapter
when using batteries other than the Shure rechargeable battery.
Bodypack: Remove the adapter when using the Shure rechargeable battery
Handheld: Rotate and store the adapter in battery door when using Shure rechargeable battery
Battery Indicator
A 5-segment icon on the receiver and transmitter menu screens indicates battery charge.
For accurate battery runtime monitoring, set the transmitter to the appropriate battery type: UTILITY > BATTERY >
SET.AA.TYPE.
This table displays the approximate hours and minutes remaining (h:mm).
Alkaline
Battery Indicator
UHF/VHF ISM/1.x
1/10 mW 20 mW 1/10mW 20mW
9:00 to
6:30 5:45 to 4:15 7:30 to 5:30
5:30 to
4:00

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Battery Indicator
UHF/VHF ISM/1.x
1/10 mW 20 mW 1/10mW 20mW
6:30 to
4:00 4:15 to 3:00 5:30 to 3:30
4:00 to
2:45
4:00 to
1:45 3:00 to 1:30 3:30 to 1:45
2:45 to
1:30
1:45 to
0:45 1:30 to 0:30 1:45 to 0:45
1:30 to
0:30
<0:45 <0:30 <0:45 <0:30
Replace Replace Replace Replace
Shure SB900 Series Rechargeable Battery
When using a Shure rechargeable battery, the receiver and transmitter home screens display the number of hours and minutes
remaining.
Detailed information for the rechargeable battery is displayed in the receiver BATTERY INFO menu and the transmitter menu:
UTILITY > BATTERY > BATT. STATS
HEALTH: Displays battery health as a percentage of the charge capacity of a new battery.
CHARGE: Percentage of a full charge
CYCLES: Number of times the battery has been charged
TEMP: Battery temperature in Celsius and Fahrenheit
Note: For additional rechargeable battery information, visit www.shure.com.
Important Tips for Care and Storage of Shure Rechargeable Batteries
Proper care and storage of Shure batteries results in reliable performance and ensures a long lifetime.
Always store batteries and transmitters at room temperature
Ideally, batteries should be charged to approximately 40% of capacity for long-term storage
During storage, check batteries every 6 months and recharge to 40% of capacity as needed
Installing the Battery Contact Cover
Install the included battery contact cover (65A15947) on the handheld transmitter to prevent light reflection in broadcast and
performance situations.
Align the cover as shown.
Slide the cover over the battery contacts until it is flush with the transmitter body.

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Note: Slide the cover off before inserting the transmitter in the battery charger.
Audio
Setting Receiver Gain
The receiver gain control sets the audio signal level for the entire receiver and transmitter system. Changes to the gain settings
occur in realtime allowing for adjustments during live performances. When adjusting the gain, monitor the audio meter levels to
prevent signal overloads.
Receiver Gain Controls
The gain can be adjusted by using the gain ▲▼ buttons or by entering the AUDIO menu and using the control wheel.
Tip: To quickly adjust the gain, press and hold a gain button to enable accelerated scrolling.
Reading the Audio Meter
The audio meter displays yellow, green, and red LEDs to indicate the audio signal level. Audio peaks illuminate the LEDs for 2
seconds, while the RMS signal is displayed in realtime.
When setting up the receiver, adjust the gain so that the average signal LED levels are solid green and occasionally yellow,
with only the highest peaks causing the red LED to illuminate.
Tip: If a vocalist is overloading a bodypack transmitter, try lowing the receiver gain. If additional attenuation is needed, use the transmitter menu to set the IN
PUT PAD to -12dB.
Note: Illumination of the red OL (overload) LED indicates the internal limiter is engaged to prevent digital clipping.
Muting a Receiver Channel Audio Output
The audio output of each receiver channel can be independently muted to prevent audio from passing. Mute status is indicated
by Rx MUTED message appearing on the receiver display in place of the gain value.
Note: Receiver gain is disabled for muted channels to prevent unexpected changes in audio levels.