Shure BLX14/SM31 — Wireless Fitness Headset System with SM31FH Headset Microphone
BLX14/SM31 Overview
The Shure BLX14/SM31 is a complete single-channel wireless headset system engineered for fitness instructors, presenters, and performers who require reliable RF performance in high-activity environments. The system centers on the SM31FH headset microphone, built with moisture-repelling construction to withstand sweat and humidity during demanding use. With up to 14 hours of battery life from the BLX1 bodypack transmitter, the system is suited for full-day event schedules and extended fitness sessions. Operating in the H9 band (512-542 MHz), the BLX14/SM31 is a practical solution for fitness studios, houses of worship, corporate AV, and touring presenters.
The system ships as a complete, ready-to-deploy package including the BLX4 tabletop single-channel receiver, BLX1 bodypack transmitter, clothing clip, power supply, two AA batteries, windscreens, and user guide, minimizing setup time and additional procurement.
Key Features
- SM31FH Fitness Headset Microphone — Moisture-repelling construction designed to maintain consistent audio performance during high-perspiration, high-activity use
- Up to 14 Hours Battery Life — Extended runtime from the BLX1 bodypack transmitter supports full-day deployments without battery changes
- BLX4 Tabletop Single-Channel Receiver — Compact receiver form factor suited for lecterns, fitness studios, and portable setups
- BLX1 Bodypack Transmitter — Lightweight transmitter with clothing clip for secure, low-profile placement during movement-intensive applications
- H9 Band Operation (512-542 MHz) — Frequency range selected for compatibility with regional RF environments; use Shure’s Frequency Finder tool to confirm local availability
- Out-of-Box Ready — Includes power supply, two AA batteries, windscreens, and user guide for immediate deployment
- Simple Setup — Designed for fast frequency coordination and minimal configuration, reducing technical overhead in live environments
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