Shure ADX2FD/B87C Digital Handheld Wireless Microphone Transmitter with Beta 87C Capsule

Product Overview

The Shure ADX2FD/B87C is a frequency-diverse digital handheld wireless microphone transmitter featuring the Beta 87C cardioid condenser capsule, designed for broadcast production, live corporate presentations, and commercial AV installations requiring professional wireless audio with automatic interference avoidance. The Beta 87C’s cardioid polar pattern provides wider coverage than a supercardioid design, making it well-suited for presenters and vocalists who move freely on stage. As part of the Axient Digital ADX series, it transmits on two independent RF frequencies simultaneously and supports ShowLink remote control, Standard mode, and High Density (HD) mode for multi-channel commercial deployments.

Product Description

The ADX2FD/B87C combines the Shure Beta 87C cardioid condenser capsule with Axient Digital frequency-diverse transmission, providing high-quality vocal capture with the RF performance required for mission-critical commercial AV and broadcast environments. Frequency diversity enables the transmitter to operate on two separate RF paths simultaneously, with ShowLink technology allowing engineers to remotely adjust settings via Wireless Workbench 6 or ShurePlus Channels app without interrupting a live production. High Density mode expands simultaneous channel capacity within limited spectrum bandwidth, a key requirement for large corporate events and broadcast facilities. The cardioid polar pattern of the Beta 87C capsule offers a wider pickup angle than supercardioid designs, providing consistent audio capture even with presenter movement. Available in the G57 band (470–616 MHz), it integrates with the Shure AD4DNP Two-Channel Receiver or Shure AD4QUS Four-Channel Receiver.

Key Features

• Frequency-Diverse Transmission — Simultaneously transmits on two independent RF frequencies for automatic interference avoidance and continuous audio performance in congested RF environments.
• Beta 87C Cardioid Condenser Capsule — Professional condenser capsule with a cardioid polar pattern and flat, extended frequency response suited for spoken word, broadcast vocals, and presenter applications.
• ShowLink Remote Control — Remote frequency management and transmitter monitoring via Wireless Workbench 6 or ShurePlus Channels iOS app during live productions.
• Standard and High Density Modes — Supports HD mode for maximum simultaneous channel counts in large-scale commercial and broadcast deployments.
• Wide Tuning Range — Broad frequency agility allows re-coordination across a large portion of the band to avoid RF interference.
• Axient Digital Receiver Compatibility — Compatible with all Axient Digital AD4D and AD4Q receivers in existing wireless infrastructure.
• Transparent Digital Audio — Low-latency Axient Digital audio path maintains vocal clarity for broadcast and live sound applications.

Typical Applications

• Broadcast studio
• Auditorium
• House of worship
• Government space
• All-hands room
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

How does the Beta 87C differ from the Beta 87A?
The Beta 87C has a cardioid polar pattern, which provides a wider pickup angle and more forgiving positioning for presenters and vocalists who move on stage. The Beta 87A has a supercardioid pattern with tighter off-axis rejection, better suited for environments with high stage monitoring levels.

Is the ADX2FD/B87C compatible with existing Axient Digital receivers?
Yes. It is compatible with all Axient Digital AD4D and AD4Q receivers in Standard and High Density modes.

What does frequency diversity mean in practical terms?
The ADX2FD/B87C transmits audio on two separate RF frequencies simultaneously. If one frequency experiences interference, the system automatically maintains the audio feed on the alternate frequency—without any audible dropout or engineer intervention required.

Can this transmitter be used in HD mode for high-density wireless deployments?
Yes. High Density mode is available and allows more simultaneous wireless channels within a constrained spectrum allocation, which is critical for large corporate events, broadcast facilities, and multi-zone commercial installations.