ULX-D

Digital Wireless Systems

SKU: ULX-D

Large conference and convention installations come with unique wireless challenges. A campus-wide solution, ULX-D® Digital Wireless is secure, scalable, and durable. From managing diverse sound sources to protecting RF from smartphones and other stray signals, the intelligent system solves wireless problems of all sizes.

Coming in Fall 2025 - Expanded Frequency Bands for ULX-D

As announced in June 2025, ULX-D components will ship with expanded frequency bands for greater geographical coverage - up to 166 MHz wide (regionally dependent).

ULX-D components with expanded frequency bands, including ULXD1 bodypack transmitters, ULXD2 handheld microphone transmitters, ULXD4D Dual Receivers and ULXD4Q Quad Receivers will be shipping in Fall 2025, for use in more locations with fewer frequency variations to manage.

Breakthrough with wireless scalability.

Extended 20 Hz – 20 KHz frequency range with totally flat response
24 bit / 48 kHz digital audio
Over 120 dB dynamic range, 130 dB (typical) using Dante™ digital networked audio
Shure Gain Ranging optimizes dynamic range for any level of input source
Built-in limiter circuitry prevents digital audio clipping
Wireless Workbench 6: The ULX-D is compatible with Wireless Workbench 6 software for advanced frequency coordination, monitoring, and control.
Wireless channel efficiency – 22 active transmitters per 8 MHz TV channel. In High-Density mode, up to 63 active transmitters can operate within an 8 MHz TV channel with no degradation in audio quality.
For ease of use, optimised scanning automatically finds, prioritises, and selects the cleanest frequencies available.
Interference detection provides instant alerts
AES-256-bit encryption offers unbreachable privacy and eliminates stray RF interference by only allowing the encrypted signal through to the receiver
Advanced lithium-ion battery technology provides an extended run time over alkaline batteries, up to 9 hours of continuous use, with detailed tracking of battery health status.
Transmitters and receivers display remaining battery life in hours and minutes, with an accuracy of within 15 minutes.
Ethernet networking allows for streamlined setup across multiple receivers.
Removable half wave antennas
Up to 72 MHz overall tuning range (region dependent)
Up to 60 dB of adjustable system gain
Rugged metal housing on both transmitters and receiver
Selectable 1, 10, and 20 mW transmitter RF output power
Transmitters offer AA alkaline backwards compatibility

What digital wireless audio quality does it offer?

Shure digital processing enables ULX-D to deliver pure, clear, and accurate reproduction of source material. An extended 20 Hz – 20 kHz frequency range, combined with a flat response, captures every detail with clarity and presence, along with an incredibly accurate low-end and transient response. A wide dynamic range of over 120 dB offers excellent signal-to-noise performance.
Proprietary Shure Gain Ranging optimises the system’s dynamic range for any input source, eliminating the need for transmitter gain adjustments

Which components does the ULX-D comprise?

Receiver options

Ethernet networking allows for streamlined setup across multiple receivers.
- ULXD4 Wireless Receiver: Half rack
- ULXD4D Dual Channel Wireless Receiver: Full rack
- ULXD4Q Quad Channel Wireless Receiver: Full rack
- ULXD4D (Dual) and ULXD4Q (Quad) receivers incorporate an extensive set of additional features:
  - Bodypack Frequency Diversity
  - RF cascade ports
  - Internal power supply
  - Audio output channel summing, to route audio to multiple outputs
  - Dante™ digital networking for multi-channel audio over Ethernet
  - Dual Ethernet ports
  - Bodypack Frequency Diversity safeguards against loss of audio signal, whether caused by RF interference or by power loss in a transmitter, to ensure uninterrupted audio for mission-critical applications. The same audio source is sent from two transmitters with different radio frequencies. If problems occur with the reception of one frequency, ULX-D dual and quad receivers continue to provide flawless audio by automatically switching to the clean frequency. Switching between channels occurs in milliseconds, without any perceivable interruption for users.

Transmitter options

ULXD1 Wireless Bodypack Transmitter: The ULXD1 is compatible with a selection of Shure Lavalier, headset, and clip-on instrument microphones.
ULXD2 Wireless Handheld Transmitter: To tailor the sound for specific purposes, the ULXD2’s microphone cartridge is interchangeable with the full range of Shure dynamic and condenser cartridges, which offer a diverse set of sound characteristics and polar patterns.

Other components

Wireless Workbench 6: The ULX-D is compatible with Wireless Workbench 6 software for advanced frequency coordination, monitoring, and control.

What third-party systems is it compatible with?

The ULX-D offers seamless integration with AMX and Crestron media control systems.

What are the ULX-D’s wireless features?

The ULX-D delivers class-leading wireless channel efficiency (region-dependent) and signal stability. Minimised intermodulation distortion allows significantly more transmitters to operate simultaneously on each channel.
In standard mode, up to 22 transmitters can operate in an 8 MHz TV channel. However, all receivers offer High-Density mode for applications that require high channel counts, significantly increasing the number of simultaneous channels possible within a single frequency band. In High Density mode, up to 63 active transmitters can operate within an 8 MHz TV channel with no degradation in audio quality.
For ease of use, optimised scanning automatically finds, prioritises, and selects the cleanest frequencies available. Interference detection provides instant alerts if the system encounters interference.
For applications where secure transmission is required, ULX-D offers Advanced Encryption Standard (AES) 256-bit encrypted signal for complete privacy. This helps reduce RF interference by allowing only the encrypted signal through to the receiver.
Advanced lithium-ion battery technology provides an extended run time over alkaline batteries, up to 12 hours of continuous use, with detailed tracking of battery health status. Lithium-ion chemistry and intelligent Shure battery circuitry result in rechargeable batteries with no memory effect, such that a complete discharge is never necessary to maintain battery health. Transmitters and receivers display remaining battery life in hours and minutes, accurate to within 15 minutes.

Shure Product Benefits

ULX-D pushes wireless audio further. More streamlined. Higher density. Up to 47 systems running simultaneously within 6 MHz. That’s one reason it’s become the standard bearer for installed digital wireless. And you can hear it in crystal clear performances around the world.