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Shure BLX14 Headset System With SM31FH Fitness Microphone Headset

Product Code SHBLX14UK/SM31
Manufacturer Shure

Buy this from the A.C. Audio Online Store. Request more information or contact us now for purchasing information.


The new SM31FH cardioid condenser microphone with analogue (BLX) transmission, designed for use in fitness instruction, features moisture-repelling construction for true performance in humid applications where corrosion damage is common.

The BLX14/SM31 Headworn Wireless System is part of the BLX wireless systems family.

Shure BLX® Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage.

Includes BLX4 wireless receiver, BLX1 bodypack transmitter, SM31 fitness headset microphone, power supply, clothing clip, windscreens, and user guide.



  • Compatible systems per frequency band (up to): 12
  • Selectable frequencies: Up to 150
  • Auto Setup Features: QuickScan : Finds group with most compatible frequencies and sets to best frequency
  • Audio Reference Companding: Yes
  • Included Antennas: BLX4, BLX88: Internal, BLX4R: Detachable
  • Antenna Options: No
  • Receiver Network Ability: No
  • PC Control: No
  • Rack Hardware: URT2 (not included), Rack mount brackets (only with rackable/BLX-R Sets)
  • Case: Included Only with BLX4 Sets
  • Transmitter Display: LED
  • Receiver Display: BLX4, BLX88: LED, BLX4R: High-resolution LCD screen
  • Battery, Endurance: 2AA, up to 14h
  • Environment: Daily Touring
  • Operating Range: 91 m ( line of sight - actual range depends on RF signal absorption, reflection and interference)
  • Available Frequencies: Between 524-865 MHz (available frequencies depend on applicable regulations in country where system used)
  • Audio Range: 50-15,000 Hz (dependent on microphone type)
  • Transmitter RF Output Power: 10 mW, typical (varies by region)
  • Audio Output Connector: XLR and 1/4" (6.3 mm) unbalanced Maximum Output Level: -27 dBV (XLR, mic level), -13 dBV (1/4")
  • Battery Life: Up to 14 hours
  • Dynamic Range: 100 dB A-weighted
  • System Distortion: 0.5% THD typical (ref. +/- 38 kHz deviation, 1 kHz tone)
  • Operating Temperature Range: -18°C (0°F) - +50°C (122°F)
  • Power Requirements: BLX1, BLX2: 2 AA alkaline or rechargeable batteries
  • BLX88: 12-18 V DC at 320 mA, supplied by external power supply

Equipment available to buy from this site is for professional use only. Please note in certain countries some products listed may not be available from A.C. Entertainment Technologies Ltd.

E&OE. Information is subject to change without notice. The rights and ownership of all trademarks are recognised.