The Shure BLX14/SM31 Wireless Fitness Microphone System is expertly designed for performers, presenters, and fitness instructors who want to break free from wires without compromising on sound quality. Part of Shure’s renowned BLX Wireless Systems, this setup delivers legendary audio performance with decades of proven wireless design and rugged construction.
Ideal for fitness and aerobics instructors, the system features the ultra-durable, moisture-resistant SM31FH Fitness Headset Condenser Microphone, engineered with hydrophobic materials to protect against corrosion and extend microphone lifespan in humid environments. The lightweight, low-profile wireframe headset ensures a secure, comfortable fit and discreet microphone placement with a flexible gooseneck.
The BLX14/SM31 offers simple, quick setup with QuickScan frequency selection, a 300-foot (91 m) line-of-sight wireless range, and compatibility with other Shure wireless bodypack systems. The included BLX1 bodypack transmitter offers adjustable gain control and up to 14 hours of continuous use powered by two AA batteries. The BLX4 receiver boasts internal antenna diversity to minimize interference and dropouts, delivering crystal-clear sound for any live or instructional setting.
Key Features:
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Wearable wireframe headset designed for active fitness and aerobics use
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Moisture-repellent hydrophobic fabric protects microphone element from sweat and humidity
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Flexible gooseneck for precise, comfortable microphone positioning
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Lightweight, low-profile design to reduce fatigue during high-impact activities
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Compatible with Shure wireless bodypack systems (TA4F connector)
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Windscreen included to reduce breath and wind noise
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Tailored frequency response optimized for crisp, clear vocal reproduction
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BLX1 bodypack transmitter with 300 ft wireless range, adjustable gain, and 14-hour battery life
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BLX4 wireless receiver with one-touch QuickScan for interference-free frequencies and multiple output options (XLR and 1/4")
Technical Specifications:
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Operating Range: 91 m (300 ft) line of sight
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Audio Frequency Response: 50 to 15,000 Hz (dependent on microphone type)
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Total Harmonic Distortion: 0.5%, typical
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Dynamic Range: 100 dB, A-weighted, typical
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SM31FH Microphone Type: Electret condenser, cardioid pattern
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Power Requirements: BLX1 powered by 2 AA batteries (up to 14 hours)
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Included: BLX4 receiver, BLX1 bodypack transmitter, SM31FH headset microphone with windscreen and cable clip
Whether leading a high-energy workout or delivering clear, professional presentations, the Shure BLX14/SM31 system combines legendary Shure durability and sound quality with hassle-free wireless freedom.
