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Shure BLX14/SM31 Wireless Cardioid Fitness Headset Microphone System (J11: 596 to 616 MHz)

BH #SH14SM31J11 • MFR #BLX14/SM31-J11
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Shure BLX14/SM31 Wireless Cardioid Fitness Headset Microphone System (J11: 596 to 616 MHz)
Key Features
  • For Fitness Instructors
  • SM31FH Cardioid Fitness Headset Mic
  • Moisture-Repellent Mic Construction
  • Lightweight Bodypack Transmitter
The Shure BLX14/SM31 brings fitness and aerobics instructors a cost-effective wireless headset microphone system with quality sound, simple setup, intuitive operation, and dependable performance right out of the box. It includes the compact and lightweight BLX4 single-channel tabletop receiver with internal antennas, ideal for portable use.
More Details

Shure BLX14/SM31 Overview

The Shure BLX14/SM31 brings fitness and aerobics instructors a cost-effective wireless headset microphone system with quality sound, simple setup, intuitive operation, and dependable performance right out of the box. It includes the compact and lightweight BLX4 single-channel tabletop receiver with internal antennas, ideal for portable use.

The BLX14/SM31 also includes an SM31FH cardioid fitness headset mic with windscreen and a bodypack transmitter. The headset is specifically designed to stay comfortable and securely in place, even during the most active workouts. Moisture-repellent hydrophobic fabric helps protect the microphone capsule from sweat and humidity.

The receiver features one-touch QuickScan frequency selection to quickly search 123 available frequencies and locate a clean RF channel in case of interference. The system provides up to 14 hours of continuous use with two AA batteries, at a range up to 300'. Up to 12 mic channels can operate simultaneously in each frequency band.

Durable Fitness Headset Mic Optimized for Speech
The rugged SM31FH fitness headset condenser microphone is built for comfort and clear vocal reproduction. It features a cardioid polar pattern that helps reject unwanted noise, and a tailored frequency response optimized for speech intelligibility. The lightweight design reduces fatigue during high-impact use, while the flexible gooseneck with discrete adjustment options lets you position the microphone for further source isolation in loud environments.
Lightweight Bodypack Transmitter
The durable BLX1 bodypack transmitter offers a lightweight, ergonomic design that is comfortable for the instructor to wear. Group and channel selection buttons allow for quick and simple frequency matching with the receiver. Other features include an easily accessible on/off switch, adjustable gain control, and a TA4M 4-pin input jack.
Easy-to-Use Tabletop Receiver for Quality Audio
The BLX4 receiver employs microprocessor-controlled internal antenna diversity to improve the quality and reliability of your wireless audio. An LED display shows group and channel settings, while two LED lights indicate when the system is ready for use and the strength of the incoming audio signal. The unit offers 1/4" and XLR outputs for connectivity to PA systems and mixing boards.
A Versatile System to Meet Your Needs
Shure offers a variety of lavalier, instrument, headset, and handheld microphone options to adapt your BLX system as your needs evolve.

  • The discrete MX153 sub-miniature earset mic provides exceptional clarity in spoken word applications.
  • The PGA31 is a comfortable headset microphone for lectures and presentations.
  • The CVL lavalier mic offers low visibility and clear vocal reproduction for discreet applications.
  • Instrumentalists can attach the WB98H/C flexible gooseneck instrument microphone for brass, woodwind, and percussion applications.
  • The WA302 guitar cable lets you connect the bodypack transmitter to a guitar or bass.
  • The BLX2 handheld transmitter is available with three different mic capsules for presenters who prefer the flexibility of a handheld microphone.
UPC: 042406555340

Shure BLX14/SM31 Specs

Key Specs
Wireless Technology
Analog UHF
Diversity
Yes
Max Operating Range
300' / 91.4 m (Line of Sight)
Receiver Type
1x Tabletop
Number of Audio Channels
1
Included Transmitters
1x Bodypack
Microphone Type
1x Headset
System
Wireless Technology
Analog UHF
Diversity
Yes
RF Frequency Band
J11: 596 to 608 MHz
614 to 616 MHz
Number of RF Channel Frequencies
123
Max Operating Range
300' / 91.4 m (Line of Sight)
Max Transmitters per Band
12
Dynamic Range
100 dBA
Encryption
No
Built-In Recorder
No
Timecode Support
No
Mobile App Compatible
No
Receiver
Receiver Type
1x Tabletop
Mounting Options
No
Antenna
2x Internal
Number of Audio Channels
1
Audio I/O
1x XLR 3-Pin Balanced Output
1x 1/4" TS Unbalanced Output  
Network I/O
No
USB/Lightning Connectivity
No
Frequency Response
50 Hz to 15 kHz (Dependent on Mic)
Display
Alphanumeric LED
Power Requirements
AC/DC Power Adapter
Transmitter
Included Transmitters
1x Bodypack
RF Output Power
10 mW
Antenna
Fixed Flexible Whip
Input Level
Microphone
Audio I/O
1x TA4M/Mini-XLR 4-Pin Male Input 
Bias/Plug-In & Phantom Power
5 V Bias/Plug-In Power
No Phantom Support
USB I/O
No
Muting
Off/On Switch
Gain Range
-16 to +10 dB
Auto-Level/Gain
No
Sync Method
Manual
Display
Alphanumeric LED (In Battery Compartment)
Microphone
Microphone Type
1x Headset
Polar Pattern
Cardioid
Frequency Response
45 Hz to 20 kHz
Maximum SPL
145 dB
Output Connector
1x TA4F/Mini-XLR 4-Pin Female 
Cable Length
3.61' / 1.1 m
Color
Black
Power
Transmitter Battery Type
2x AA (Included)
Transmitter Battery Life
14 Hours (Alkaline)
AC/DC Power Adapter
12 to 15 VDC at 160 mA, Center-Positive (Included)
Input Power
100 to 240 VAC, 60 / 50 Hz at 150 mA
Physical
Housing
ABS
Dimensions
Receiver:
7.4 x 1.6 x 4.1" / 188 x 40 x 103 mm
Transmitter:
2.5 x 4.3 x 0.8" / 64 x 110 x 21 mm
Weight
Receiver:
8.5 oz / 241 g
Transmitter:
2.6 oz / 75 g (without Batteries)
Microphone:
2.1 oz / 60 g
Packaging Info
Package Weight
4.2 lb
Box Dimensions (LxWxH)
18.2 x 13 x 4.2"

Shure BLX14/SM31 Reviews

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