General Description

ULX-D series boundary and gooseneck base transmitters add new designs to Shure's breakthrough ULX-D wireless line. Boundary and gooseneck base transmitters offer cable-free flexibility for corporate conference rooms, government facilities, educational institutions, A/V conferencing, and live sound reinforcement. Use Shure Wireless Workbench^® software and networked docking stations to simplify transmitter configuration and monitor charging status.

Both transmitters run on rechargeable or AA batteries and can be monitored using external control systems, such as AMX or Crestron. ULX-D systems also offer audio signal encryption, high-density mode, and Dante™ digital networking for multi-channel audio over Ethernet.

Included Components

• AA Batteries

Optional Accessories

Model Variations

Transmitter Controls and Connectors

① Power Button

Press to power on; press and hold to power off.

② Mute/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

③ Mute LED

Indicates whether microphone is active or muted. The following settings are available:

*MX400R series gooseneck microphones (red LED) do not offer this setting.

④ Low-Battery LED

• Off = More than 30 minutes of battery life remain
• On (red) = Less than 30 minutes of battery life remain
• On (green) = Microphone docked on charging station
• On (amber) = Battery is missing or is not inserted correctly

⑤ Infrared (IR) Port

Align with receiver IR port to send settings to transmitter.

⑥ Charge Connector

Connects to networked chargers and USB power supply.

⑦ Gooseneck Microphone

ULXD8 base fits 5", 10", and 15" Microflex series microphones. Gooseneck microphones are available in single or dualflex models and with bi-color or red-only LEDs.

Connecting Gooseneck Microphone to ULXD8 Base

ULXD8 base transmitters fit 5", 10", and 15" Microflex series gooseneck microphones, available in single and dualflex models.

Connect microphone to base as shown.

Boundary Microphone Placement

The boundary transmitter sits on a table or desk to transmit speech while discreetly blending into any conference environment. Cardioid and omnidirectional versions are available.

For best low-frequency response and rejection of background noise, place the microphone on a large, flat surface, such as a floor, table, or lectern.

To reduce reverberance, avoid reflective surfaces above or to the side of the microphone, such as beveled sides of pulpits or overhanging shelves.

Batteries

Boundary and gooseneck base transmitters can be powered by Shure rechargeable batteries or two AA batteries (included).

The receiver front panel displays battery charge level in hours/minutes for Shure batteries and in bars for AA batteries. For accurate monitoring, set battery type in the IR Presets menu using the receiver front panel or Wireless Workbench and perform an IR sync.

Menu path: IR PRESETS > GOOSENECK / BOUNDARY > BATTERY

Battery Runtime Charts

For AA batteries, the battery icon on the receiver front panel indicates battery charge.

The following tables display the approximate hours and minutes remaining (hh:mm) for each battery indicator.

Alkaline

Battery Life	10 mW
	8:00 to 5:55
	5:55 to 3:50
	3:50 to 1:45
	1:45 to 0:45
	0:45 to 0:15
	0:15 to 0:00

NiMH

Battery Life	10 mW
	10:00 to 7:15
	7:15 to 4:30
	4:30 to 1:45
	1:45 to 0:45
	0:45 to 0:15
	0:15 to 0:00

Li-primary

Battery Life	10 mW
	15:00 to 10:35
	10:35 to 6:10
	6:10 to 1:45
	1:45 to 0:45
	0:45 to 0:15
	0:15 to 0:00

Changing Transmitter Settings

Each transmitter has the following adjustable settings:

• Mute button and mute LED behavior or brightness
• High-pass filter
• RF power
• Power lock
• Initial state from charger
• Battery type
• Device name
• Channel name
• Frequency
• Normal or High-Density mode
• Boundary and gooseneck offset

There are three ways to change transmitter settings:

Mute/Active Button

The button is configured to toggle between Mute and Active. The following options are available:

• Toggle: Press button to mute microphone, press again to pass audio
• Push-to-Talk: Hold button to pass audio
• Push-to-Mute: Hold button to mute microphone
• Disabled: Button functionality off

Change button behavior using Wireless Workbench or the receiver front panel.

Menu path: IR PRESETS > GOOSENECK / BOUNDARY > MUTE BUTTON BEHAVIOR

Note: When the mute/active button is set to Disabled, the transmitter will still send TPCI data if the button is pressed.

High-Pass Filter

Each transmitter contains a high-pass filter.

The high-pass filter:

• attenuates frequencies below 150 Hz by 12 dB per octave
• reduces low-frequency noise caused by table vibration or air handling systems

Adjust high-pass filter settings using Wireless Workbench or the receiver front panel.

Menu path: IR PRESETS > GOOSENECK / BOUNDARY > HIGH PASS

Transmitter RF Power

Reference the following table for setting RF Power:

Menu path: IR PRESETS > GOOSENECK / BOUNDARY > RF POWER

Note: Using the 20 mW setting decreases the transmitter battery runtime and reduces the number of compatible systems.

Locking Transmitter Controls

Boundary and gooseneck base transmitters have a power lock to prevent accidental or unauthorized changes to the transmitter. When the power lock is on, the transmitter's power switch is disabled.

To unlock, use receiver front panel or Wireless Workbench.

Menu path: IR PRESETS > GOOSENECK / BOUNDARY > POWER LOCK  

Attempting to access a locked feature will display the following message on the receiver front panel:

Setting Initial State From Charger

Use the receiver front panel or Wireless Workbench to control a transmitter's state after you remove it from a networked docking station.

• Active: On and passing audio
• Muted: On but the audio is muted
• Off: Power is off

Menu path: IR PRESETS > GOOSENECK / BOUNDARY > INITIAL STATE FROM CHARGER  

Note: If Mute Button Behavior is set to Push-to-Talk and Initial State From Charger is set to Active, the transmitter will only pass audio when you push the mute button. Make sure to coordinate settings for Mute Button Behavior and Initial State From Charger.

Audio Signal Encryption

When encryption is enabled, the receiver generates a unique encryption key which is shared with the transmitter during an IR sync. Transmitters and receivers that share an encryption key form a protected audio path, preventing unauthorized access from other receivers.

Enable encryption using Wireless Workbench or the receiver front panel. For more details, see the user guide for your receiver.

BN and GN OFFSET

BN OFFSET and GN OFFSET compensate for signal level differences between transmitters that share the same receiver channel. For normal gain adjustments, use the receiver gain buttons.

Set the offset gain on a low signal level transmitter to match a louder transmitter: IR PRESETS > GOOSENECK / BOUNDARY > BN OFFSET

IR PRESETS > GOOSENECK / BOUNDARY > GN OFFSET

Transmitter Reset

Hold mute button while powering on transmitter to restore factory settings:

• Mute button: Toggle
• Mute LED: Active/Mute = Green/Red
• Mute LED with MX400R gooseneck: Active/Mute = Red/Off
• Initial state from charger: Active
• High-pass filter: Off
• RF power: 10 mW
• Battery type: Alkaline
• BN or GN offset: 0 dB
• Power lock: Off
• Mute LED brightness: Normal

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Frequency Range

*Output power delivered to the antenna port of the transmitter.

Specifications 

Important Product Information

IMPORTANT SAFETY INSTRUCTIONS

1. READ these instructions.
2. KEEP these instructions.
3. HEED all warnings.
4. FOLLOW all instructions.
5. DO NOT use this apparatus near water.
6. CLEAN ONLY with dry cloth.
7. DO NOT block any ventilation openings. Allow sufficient distances for adequate ventilation and install in accordance with the manufacturer’s instructions.
8. DO NOT install near any heat sources such as open flames, radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not place any open flame sources on the product.
9. DO NOT defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wider blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. PROTECT the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. ONLY USE attachments/accessories specified by the manufacturer.
12. USE only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

    

13. UNPLUG this apparatus during lightning storms or when unused for long periods of time.
14. REFER all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15. DO NOT expose the apparatus to dripping and splashing. DO NOT put objects filled with liquids, such as vases, on the apparatus.
16. The MAINS plug or an appliance coupler shall remain readily operable.
17. The airborne noise of the Apparatus does not exceed 70dB (A).
18. Apparatus with CLASS I construction shall be connected to a MAINS socket outlet with a protective earthing connection.
19. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
20. Do not attempt to modify this product. Doing so could result in personal injury and/or product failure.
21. Operate this product within its specified operating temperature range.

WARNING: Voltages in this equipment are hazardous to life. No user-serviceable parts inside. Refer all servicing to qualified service personnel. The safety certifications do not apply when the operating voltage is changed from the factory setting.

	This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit.
	This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit.

WARNING: Danger of explosion if incorrect battery replaced. Operate only with AA batteries.

Certifications