Shure AD2TA/SM58=-K54 Digital Handheld Wireless Microphone Transmitter with SM58 Capsule (K54: 606 to 663 MHz) (TAA-Compliant)

Product Overview

The Shure AD2TA/SM58=-K54 is a TAA-compliant Axient Digital handheld wireless microphone transmitter fitted with the SM58 dynamic cardioid capsule, operating in the K54 frequency band (606–663 MHz). Designed for commercial AV deployments requiring government procurement compliance, this transmitter combines the proven SM58 capsule with AES-256 encrypted wireless audio, High Density mode, and the professional Axient Digital RF platform. It is well-suited for live event production, government facilities, conference rooms, and any commercial space where reliable encrypted wireless audio is required.

Product Description

The AD2TA/SM58=-K54 brings TAA-compliant wireless performance to the K54 frequency band, serving deployments where 606–663 MHz spectrum is preferred or regionally available. The SM58 dynamic cardioid capsule delivers maximum input SPL of 145 dB at 1 kHz, making it ideal for high-volume vocal applications and live performance environments where handling and ambient noise rejection are priorities. Selectable RF power (2, 10, 35 mW; limited to 10 mW above 608 MHz per FCC regulations for K54 band) allows system designers to balance coverage range against spectral density. High Density mode supports up to 47 concurrent transmitters in a 6 MHz TV channel, enabling large multi-channel deployments. AES-256 encryption secures audio across the RF link for government buildings and secure commercial environments. Up to 11 hours of operation are available on the SB900C rechargeable lithium-ion battery.

See also the Shure ADX2/B58 — the ADX-series Axient Digital transmitter with Beta 58A capsule and ShowLink remote control capability.

Key Features

• TAA Compliance — Qualifies for GSA Schedule procurement and federal contract purchases under the Trade Agreements Act without waivers.
• SM58 Dynamic Cardioid Capsule — Handles up to 145 dB SPL at 1 kHz, requires no phantom power, and provides consistent cardioid polar pattern for vocal rejection of off-axis sound.
• K54 Band (606–663 MHz) — Serves deployments where K54 band spectrum is locally available; always verify frequency coordination prior to installation.
• AES-256 Encryption — Hardware encryption secures the RF audio link against unauthorized monitoring in government and enterprise environments.
• High Density (HD) Mode — 125 kHz channel spacing enables more concurrent wireless channels versus 350 kHz Standard mode spacing.
• >120 dB Dynamic Range — The Axient Digital platform maintains full dynamic range across all capsule types, ensuring clean audio reproduction.
• Selectable RF Power (2/10/35 mW) — Three power settings let integrators optimize coverage and battery runtime; K54 band is limited to 10 mW above 608 MHz.
• Up to 11-Hour Battery Runtime — SB900C rechargeable lithium-ion battery or standard 2× AA alkaline, with external charging contacts for docked recharging.
• 100m Line-of-Sight Operating Range — Covers typical commercial and institutional spaces when paired with Axient Digital receivers.
• Interchangeable Cartridge — Capsule swaps tool-free to any Shure AD-series RPW replacement cartridge for system flexibility.
• Cast Aluminum Housing — Rugged construction with lockable menu and power controls for commercial deployment management.

Typical Applications

• Government facilities and federal buildings requiring TAA-compliant wireless systems
• Live event production and auditorium vocal reinforcement
• Commercial conference rooms and multi-purpose spaces
• House of worship applications requiring high-SPL dynamic microphone performance
• All-hands rooms and training rooms with high channel count requirements
• Broadcast studio and production environments needing encrypted RF links

Technical Specifications

Frequently Asked Questions

Which receivers are compatible with the AD2TA/SM58=-K54?
This transmitter is compatible with all Shure Axient Digital AD and ADX series receivers (AD4D, AD4Q, ADX4D) operating in the same K54 frequency band. Always match transmitter and receiver band labels before deployment.

Why choose the SM58 capsule for this application?
The SM58 dynamic cardioid capsule handles up to 145 dB SPL, requires no phantom power, and resists handling noise—making it the standard choice for live vocal reinforcement, auditorium applications, and any environment where robustness and SPL handling are priorities over extended high-frequency response.

What is the RF power limitation for the K54 band?
Per FCC regulations, K54 band transmitters are limited to 10 mW output above 608 MHz. System designers should account for this when planning coverage range, and may need to supplement with directional antennas in larger spaces.

What does TAA compliance mean for procurement?
TAA compliance allows this product to be purchased through GSA Schedules, SEWP contracts, and other federal procurement vehicles requiring Buy American compliance. It is required for most government and defense AV installations.

Can the capsule be changed?
Yes. All Shure AD-series RPW replacement cartridges swap tool-free. Compatible options include SM58 (RPW112), Beta 58A (RPW118), Beta 87A (RPW120), KSM9HS Nickel (RPW190), and VP68 (RPW124).

What warranty applies?
Shure provides a two-year limited warranty on the AD2 transmitter body. Contact Shure support or your authorized dealer for RMA and service.