The Shure ULXD4 Digital Wireless Receiver is a professional single-channel receiver for Shure ULX-D Digital Wireless Systems, designed for demanding live sound, installed AV, presentation, education, house of worship, and event-production applications.

ULX-D combines 24-bit/48 kHz digital audio, efficient RF performance, networked control, and AES-256 encryption in a rugged rackmount receiver. The ULXD4 also supports Shure Wireless Workbench software for frequency coordination, monitoring, and management of networked wireless systems.

With automatic frequency scanning, interference detection, predictive switching diversity, and a front-panel LCD interface, the ULXD4 provides the tools needed to configure and monitor professional wireless microphone systems ranging from a single channel to larger coordinated installations.

24-Bit Digital Wireless Audio

The Shure ULXD4 delivers digital audio with a 20 Hz–20 kHz frequency response and more than 120 dB of dynamic range, providing the performance required for speech, vocals, presentations, and professional sound reinforcement.

Its digital architecture is designed to maintain consistent audio performance throughout the wireless signal path while supporting the RF and networking capabilities required for professional multi-channel wireless systems.

Reliable UHF Wireless Performance

The ULXD4 uses predictive switching diversity to maintain reliable RF reception from compatible ULX-D transmitters.

Automatic channel scanning helps identify available frequencies, while interference detection provides alerts when RF interference is detected.

The receiver supports tuning bandwidth of up to 64 MHz, depending on the frequency-band version. Because ULX-D is available in multiple frequency ranges, the receiver and transmitter must use compatible frequency bands.

High Density Mode

For applications requiring a large number of wireless channels, High Density Mode allows compatible ULX-D systems to increase the number of channels that can operate within available spectrum.

This can be particularly valuable in campuses, conference facilities, theaters, houses of worship, corporate AV systems, and event environments where many wireless microphones need to operate simultaneously.

AES-256 Encryption

The Shure ULXD4 supports AES-256 encryption for applications where wireless audio security is important.

Encryption can be enabled between compatible ULX-D transmitters and receivers, making the system suitable for corporate meetings, government facilities, education, presentations, and other installations requiring additional protection for transmitted audio.

Wireless Workbench Network Control

Built-in Ethernet networking allows the ULXD4 to integrate with Shure Wireless Workbench for system setup, RF coordination, monitoring, and control.

For larger wireless systems, network connectivity allows multiple compatible Shure devices to be managed from a centralized location rather than configuring every receiver individually from the front panel.

The ULXD4 supports 10/100 Mbps Ethernet and DHCP or manual IP addressing.

Front-Panel Monitoring and Control

The receiver's front-panel LCD provides access to important audio, RF, transmitter, and system information.

Dedicated audio and RF meters provide visual monitoring of system performance, while front-panel controls allow technicians to configure receiver functions without requiring a computer.

Display brightness and control-lock functions can also be adjusted for permanent installations and live production environments.

Professional Balanced Audio Outputs

The ULXD4 provides both balanced XLR and 1/4-inch audio outputs for connection to professional mixing consoles, DSP systems, recording equipment, and installed audio systems.

Output gain can be adjusted from -18 dB to +42 dB, with a mute setting also available.

The XLR output provides selectable microphone- and line-level operation, giving the receiver flexibility when interfacing with different types of professional audio equipment.

Shure ULXD4 Key Features

• Single-channel ULX-D digital wireless receiver
• 24-bit/48 kHz digital audio
• 20 Hz–20 kHz audio frequency response
• More than 120 dB dynamic range
• Predictive switching diversity
• Automatic frequency scanning
• RF interference detection and alerts
• High Density Mode for applications requiring additional wireless channels
• Up to 64 MHz tuning bandwidth, frequency-band dependent
• AES-256 encryption
• Shure Wireless Workbench compatibility
• Ethernet networking
• DHCP or manual IP addressing
• Front-panel LCD
• RF and audio metering
• Adjustable display brightness
• Front-panel control lock
• Balanced XLR output
• Balanced 1/4-inch output
• Adjustable output gain
• Rugged metal chassis
• Rackmount hardware included

Designed for Networked Wireless Systems

One of the major advantages of the ULXD4 is its ability to operate as part of a larger networked Shure wireless system.

Wireless Workbench can be used to coordinate compatible wireless channels, monitor RF and audio performance, review battery and transmitter information, and manage system parameters from a central computer.

This makes the ULXD4 especially appropriate for facilities operating multiple wireless microphone channels across performance spaces, meeting rooms, auditoriums, worship facilities, or other professional environments.

Ideal Applications

The Shure ULXD4 is well suited for:

• Live sound systems
• Theaters and performing arts centers
• Houses of worship
• Corporate AV systems
• Conference and meeting facilities
• Schools and universities
• Auditoriums
• Government facilities
• Event production
• Broadcast and production environments
• Multi-channel professional wireless systems

Shure ULXD4 Technical Specifications