Shure ULXD2/B58 – ULX-D Digital Handheld Wireless Transmitter with Beta 58A (V50)

Product Overview

The Shure ULXD2/B58 is a digital handheld wireless microphone transmitter for the ULX-D system, equipped with the Beta 58A supercardioid dynamic capsule. Operating in the V50 band (174–216 MHz), it delivers 24-bit/48 kHz digital audio over ULX-D digital wireless infrastructure for live performance, speech reinforcement, and commercial AV applications. The Beta 58A's tight supercardioid polar pattern and higher output compared to the SM58 make the ULXD2/B58 the choice for environments demanding greater feedback rejection and increased vocal presence in the mix.

Product Description

The Beta 58A supercardioid dynamic capsule offers a neodymium element for consistently high output, a uniform supercardioid polar response that minimizes off-axis pickup, and an extended high-frequency response from 50 Hz to 16 kHz—delivering more presence and clarity than the SM58 for professional live sound, house of worship, and auditorium applications. The ULX-D digital platform provides >120 dB dynamic range and AES 256 encryption, combining professional RF performance with broadcast-quality audio. Compatible with ULX-D and QLX-D receivers. For a 4-channel rack-mount receiver, see the Shure ULXD4Q Quad-Channel Wireless Receiver.

Key Features

• Beta 58A Supercardioid Dynamic Capsule — Neodymium element with tight supercardioid polar response delivers higher output and greater feedback rejection than cardioid alternatives in high-gain live environments.
• Extended High-Frequency Response — 50 Hz–16 kHz capsule response provides increased presence and vocal clarity for professional speech and performance applications.
• 24-Bit/48 kHz Digital Audio — ULX-D wireless delivers broadcast-quality audio with >120 dB dynamic range and flat system response.
• AES 256 Encryption — Secures wireless audio for government, corporate, and commercial event applications.
• High Density Mode — Supports up to 63 simultaneous transmitters in one 8 MHz TV channel for large-scale multi-channel wireless deployments.
• ULX-D and QLX-D Compatible — Integrates with ULX-D and QLX-D receivers for deployment flexibility across Shure's professional wireless ecosystem.
• Replaceable Capsule — Compatible with RPW series wireless replacement cartridges for capsule changes without replacing the transmitter body.

Typical Applications

• House of worship
• Auditorium
• Commercial meeting space
• All-hands room
• Multi-purpose room
• Government space

Technical Specifications

Frequently Asked Questions

What is the difference between the Beta 58A and SM58 capsule on a ULX-D transmitter?
The Beta 58A is a supercardioid dynamic capsule with a neodymium element, providing higher output, a tighter pickup pattern (supercardioid vs. cardioid), and extended high-frequency response (to 16 kHz vs. 15 kHz). It offers more feedback rejection and greater vocal presence, making it preferred in loud stage environments and larger venues.

What receivers work with the ULXD2/B58 V50?
This transmitter is compatible with ULX-D and QLX-D receivers in the V50 band. Confirm receiver band compatibility before purchasing—all components in the system must match the same frequency band.

Can I swap the Beta 58A capsule for a different cartridge?
Yes. The ULXD2 body accepts RPW series wireless replacement cartridges, including SM58 (RPW112), SM86 (RPW114), Beta 87A (RPW120), and others, without replacing the transmitter body.

Is the V50 band available throughout the US?
V50 (174–216 MHz) is a VHF band. Availability and channel clearances vary by region and local spectrum usage. Consult Shure's frequency finder tool or a local RF coordinator to confirm V50 is appropriate for your deployment area.