Shure SM31FH Cardioid Condenser Fitness Headset Microphone
DETAILS
Shure SM31FH – Moisture-Resistant Fitness Headset Microphone for Active Use.
The Shure SM31FH Cardioid Condenser Fitness Headset Microphone is designed specifically for fitness instructors, presenters, and performers who require reliable, hands-free vocal performance in high-energy and humid environments.
Ideal for gyms, fitness studios, schools, places of worship, and live demonstrations, the SM31FH delivers clear, focused vocal reproduction while remaining comfortable and secure during movement-intensive use.
At the heart of the SM31FH is a cardioid electret condenser capsule with an integrated moisture-repelling hydrophobic fabric. This specialised construction protects the microphone element from sweat and humidity, helping to prevent corrosion and maintain consistent audio performance over time. The tailored frequency response ensures crisp, intelligible vocals, even in challenging acoustic spaces.
The lightweight wireframe headset is engineered for comfort and stability, making it suitable for prolonged wear during aerobics, personal training, and high-impact instruction. A flexible gooseneck allows discreet adjustment of microphone placement, optimising isolation from background noise and reducing feedback for clear, controlled sound.
Equipped with a TA4F (4-pin) connector, the SM31FH is fully compatible with Shure wireless bodypack systems, making it an ideal replacement headset for existing Shure analogue and digital wireless setups. Supplied with a windscreen to reduce plosives, breath noise, and wind interference, the SM31FH is a durable, professional solution built with Shure’s renowned precision engineering.
Shure SM31FH Key Features:
- Designed for Fitness Use: Purpose-built for fitness instruction, aerobics, and active presentations.
- Moisture-Repelling Construction: Hydrophobic fabric protects the microphone element in humid environments.
- Cardioid Polar Pattern: Focused pickup reduces background noise and improves vocal clarity.
- Secure Wireframe Headset: Lightweight, low-profile design ensures comfort and stability during movement.
- Flexible Gooseneck: Allows precise positioning for optimal isolation and sound quality.
- TA4F Connector: Compatible with Shure wireless bodypack systems for easy replacement.
- Included Windscreen: Reduces plosives, breath noise, and wind interference.
- Legendary Shure Build Quality: Durable construction for long-term professional use.
SPECS & DOWNLOADS
Shure SM31FH Specifications:
- Microphone Type: Electret condenser
- Polar Pattern: Unidirectional (cardioid)
- Frequency Response: 45 Hz – 20 kHz
- Output Impedance: 600 Ω @ 1 kHz
- Audio Output Level: -50 dBV/Pa
- Signal-to-Noise Ratio: 66 dB @ 1 kHz
- Maximum SPL: 145 dB (1000 Ω load, @ 3% THD)
- Dynamic Range: 117 dB @ 1 kHz (1000 Ω load)
- Equivalent Output Noise: 28 dB A-weighted
- Power Requirements: +5 V DC nominal, 10 V maximum (DC bias)
- Polarity: Positive pressure produces positive voltage on pin 3 relative to pin 1
- Cable Length: 1.1 m (45")
- Connector: TA4F (4-pin mini XLR)
- Net Weight: 60 g
