Shure ADX2/B87C Digital Handheld Wireless Microphone Transmitter with Beta 87C Capsule

Product Overview

The Shure ADX2/B87C is a professional Axient Digital handheld wireless transmitter paired with the Beta 87C cardioid condenser capsule, designed for live vocal reinforcement in auditoriums, conference rooms, houses of worship, and broadcast environments. Unlike the tighter supercardioid Beta 87A, the Beta 87C offers a wider cardioid pattern that is more forgiving of off-axis positioning—an advantage in unrehearsed presentations and panel discussions. ShowLink remote control, 184 MHz tuning range, and AES 256-bit encryption make the ADX2/B87C a high-performance Axient Digital wireless solution for commercial AV integrators.

Product Description

The ADX2/B87C combines the full feature set of the ADX series transmitter with the Beta 87C cardioid condenser capsule. For AV integrators, the cardioid pickup pattern is often preferable in spoken-word applications where presenters move off-axis or hold the microphone at varying distances. The ADX2/B87C supports Standard and High Density operating modes, allowing the same hardware to deploy in both small conference room wireless systems and large-scale multi-channel installations with dozens of simultaneous channels. ShowLink diversity control connects to Wireless Workbench for remote frequency coordination, output power adjustment, and mute control from the front-of-house position. Shure's SB920A lithium-ion rechargeable battery (included) delivers up to 9 hours of runtime at 10 mW with full precision metering and dockable charging capability.

Key Features

• ShowLink Remote Control — Real-time remote parameter management via IEEE 802.15.4 diversity link integrated into Wireless Workbench software for centralized channel control.
• Beta 87C Cardioid Condenser Capsule — Wide cardioid pickup pattern provides consistent audio capture for presenters who move off-axis, well-suited for panel discussions and town halls.
• 184 MHz Tuning Range — Full-band frequency agility for use in RF-challenging environments including convention centers and multi-tenant commercial buildings.
• AES 256-Bit Encryption — Protects audio content in government, executive, and broadcast environments where transmission security is required.
• High Density Mode — 125 kHz channel spacing enables higher simultaneous wireless channel counts versus Standard mode’s 350 kHz spacing.
• Selectable RF Output: 2/10/40 mW — Three power levels provide flexibility for high-density close-range systems or extended-range large-venue deployments.
• SB920A Rechargeable Battery — Lithium-ion rechargeable included; up to 9 hours at 10 mW with dockable charging contact support.
• Interchangeable RPW-Series Capsules — The ADX2 body is compatible with the full range of Shure RPW wireless capsules for field reconfiguration.
• 100 m Line-of-Sight Range — Suitable for large auditoriums, ballrooms, and conference centers with standard deployment distances.
• Automatic Input Staging — Automatically optimizes mic gain for consistent signal levels without manual intervention at the transmitter.

Typical Applications

• Conference room
• All-hands room
• House of worship
• Auditorium
• Training room
• Government space
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

What is the difference between the Beta 87A and Beta 87C capsule?
The Beta 87A uses a supercardioid polar pattern (tighter off-axis rejection, better feedback resistance), while the Beta 87C uses a standard cardioid pattern (wider pickup, more forgiving of positional variations). The Beta 87C is generally preferred for presentations, panels, and spoken-word where exact mic technique cannot be controlled.

Can the ADX2/B87C use AA batteries?
No. The ADX2 series requires Shure SB920A rechargeable lithium-ion batteries exclusively. AA batteries are not compatible with the ADX2 transmitter body. The AD2 series (non-ADX) supports AA batteries if rechargeable-only operation is a concern.

What Axient Digital receivers are compatible?
The ADX2/B87C is compatible with the AD4D (dual-channel), AD4Q (quad-channel), and ADX5D (dual-channel with integrated ShowLink access point) Axient Digital receivers. Band selection must match between transmitter and receiver.

Is the ADX2/B87C compatible with Wireless Workbench?
Yes. The ADX2/B87C connects to Wireless Workbench 6 via ShowLink and any compatible Axient Digital receiver or ADSL access point, enabling network-based monitoring and control of all transmitter parameters.

What warranty does this product carry?
Shure offers a 2-year limited warranty. Contact Creation Networks for service support and warranty coordination.