Shure ULXD6/C Digital Wireless Cardioid Boundary Microphone Transmitter (Black, H50: 534 to 598 MHz)

The Shure ULXD6/C=-H50 is a boundary microphone transmitter that works digitally and wirelessly to give meeting rooms, lecture halls, and council chambers clear, reliable speech pickup without cable clutter. Because it sits directly on the table and uses a cardioid pickup pattern, it focuses on voices that sit in front of it and lowers the level of room reflections or projector noise that often distract listeners.

Audio quality is delivered at 24 bit and 48 kHz, so voices sound natural whether they feed a conferencing platform, a sound reinforcement system, or a recording rig. When paired with a Shure ULX-D receiver, the system keeps latency low, making it practical for hybrid meetings where on-site and remote participants need to interact in real time.

The wireless link reaches up to 100 meters and is protected with AES 256 bit encryption. That combination of range and security suits corporate boardrooms, government spaces, and classrooms where confidential discussions must stay private and where flexible furniture layouts change from day to day.

Power options adjust easily to the schedule of the room. Two AA batteries work for quick setup or backup situations, while an optional Shure SB900A rechargeable pack delivers up to nine hours of continuous run time and can be charged through USB or a compatible docking station between sessions. The transmitter housing is low in profile and made from rugged plastic that stands up to frequent repositioning.

Onboard controls add further convenience. A programmable mute switch with an LED ring lets presenters silence the mic on demand, and a high-pass filter helps remove HVAC rumble or handling noise. Selectable RF output levels of 1, 10, or 20 mW let technicians match the transmitter’s power to the size and density of the wireless environment.

• Boundary microphone transmitter that runs on a digital wireless link and uses a cardioid pickup pattern
• 24 bit 48 kHz audio resolution for speech that sounds detailed and natural
• AES 256 bit encryption protects confidential or sensitive meetings
• Selectable RF output levels of 1, 10, or 20 mW accommodate different room sizes and channel counts
• Operating range of up to 100 meters supports flexible room layouts
• Up to nine hours of run time with the optional Shure SB900A rechargeable battery
• Programmable mute switch with an LED ring gives presenters clear visual feedback
• Works seamlessly with Shure ULX-D receivers for low-latency performance
• USB charging and docking station options simplify battery management
• High-pass filter reduces low-frequency noise in acoustically lively rooms