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Shure BLX14R/SM31 Rackmount Wireless Cardioid Fitness Headset Microphone Kit (H10: 542 to 572 MHz)

BH #SHBLX4RH10K (B&H Kit)
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Shure BLX14R/SM31 Rackmount Wireless Cardioid Fitness Headset Microphone Kit (H10: 542 to 572 MHz)
Key Features
  • For Fitness Instructors
  • SM31FH Cardioid Fitness Headset Mic
  • Moisture-Repellent Mic Construction
  • Lightweight Bodypack Transmitter
Designed specifically for fitness instructors, the Shure BLX14R/SM31 Rackmount Wireless Cardioid Fitness Headset Microphone Kit from B&H combines the tough, sweat-resistant, SM31FH flexible headset mic with a rugged bodypack transmitter and a receiver that can be safely rackmounted out of the way.
More Details
Kit Contains:

Designed specifically for fitness instructors, the Shure BLX14R/SM31 Rackmount Wireless Cardioid Fitness Headset Microphone Kit from B&H combines the tough, sweat-resistant, SM31FH flexible headset mic with a rugged bodypack transmitter and a receiver that can be safely rackmounted out of the way.


With simple setup, intuitive interface, and One-Touch QuickScan frequency selection, the system delivers reliable wireless transmission, ensuring that your voice is heard clearly, even over the noisiest gym classes.

Shure BLX4R Rackmount Wireless Receiver (H10: 542 to 572 MHz)

The Shure BLX4R is a single-channel wireless receiver compatible with the BLX1 bodypack transmitter and BLX2 handheld transmitters. It features a rugged metal chassis and, using the included hardware, can be rackmounted with the two removable antennas positioned on the front of the rack—for optimal signal reception in A/V installations and sound-reinforcement applications.

The BLX4R offers one-touch QuickScan frequency selection to quickly search 123 available frequencies and locate a clean RF channel in case of interference. It also employs microprocessor-controlled diversity technology to reduce dropouts. BLX systems allow up to 12 mic channels to operate simultaneously in each frequency band, at a range up to 300'.

The LCD display shows group and channel settings, and allows you to meter audio level and signal strength. An LED indicator even lets you keep an eye on the transmitter's remaining battery life. The unit offers 1/4" and XLR connectors with adjustable output level for flexible connectivity to PA systems and mixing boards.

UPC: 042406470766
Shure BLX1 Wireless Bodypack Transmitter (H10: 542 to 572 MHz)

The Shure BLX1 is a bodypack wireless transmitter compatible with BLX Series receivers. With a lightweight, ergonomic design, it is comfortable for performers and presenters to wear, while providing up to 14 hours of continuous use with the two included AA batteries, at a range up to 300'.

Group and channel selection buttons allow for quick and simple frequency matching with the receiver. Other features include an easily accessible On/Off switch and adjustable gain control. The TA4M 4-pin input jack allows you to plug the lavalier, headset, or instrument microphone of your choice or an adapter cable for guitar and bass.

UPC: 042406470261
Shure SM31FH Fitness Headset Condenser Microphone

The SM31FH Fitness Headset Condenser Microphone from Shure is a cardioid condenser headset microphone designed to be used by fitness and aerobics instructors. It has integrated moisture-repelling hydrophobic fabric that helps protect the microphone capsule from sweat and humidity. A windscreen is included.

Wearable wireframe headset designed for a secure, comfortable fit made for fitness and aerobics instructors
Integrated moisture-repelling hydrophobic fabric protects the microphone element from harmful corrosion for use in humid environments
Flexible gooseneck design provides discrete adjustment options to optimize placement for greatest isolation
Compatible with Shure wireless bodypack systems for direct replacement of TA4F-connected microphones
Lightweight and low-profile form factors help avoid fatigue during high-impact use
Tailored frequency response refined for crisp and clear vocal reproduction
UPC: 042406325745
Kit Contains:

Shure BLX4R Rackmount Wireless Receiver (H10: 542 to 572 MHz)

Key Specs
Wireless Technology
Analog UHF
Diversity
Yes
Max Operating Range
300' / 91.4 m (Line of Sight)
Receiver Type
1x Tabletop/Rack-Mountable
Number of Audio Channels
1
Included Transmitters
No Transmitters Included
Microphone Type
No Microphone Included
Included Charging Case
No
System
Wireless Technology
Analog UHF
Diversity
Yes
RF Frequency Band
H10: 542 to 572 MHz
Number of RF Channel Frequencies
123
Max Operating Range
300' / 91.4 m (Line of Sight)
Max Transmitters per Band
12
Encryption
No
Built-In Recorder
No
Timecode Support
No
Mobile App Compatible
No
Receiver
Receiver Type
1x Tabletop/Rack-Mountable
Mounting Options
Rackmount (with Included Hardware, 1 U Half-Rack)
Antenna
2x Removable 1/4 Wave External (Rear-Mount)
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
Backlit LCD
Power Requirements
AC/DC Power Adapter
Transmitters
Included Transmitters
No Transmitters Included
Microphones
Microphone Type
No Microphone Included
Power
Included Charging Case
No
Charging Case
AC/DC Power Adapter
12 to 15 VDC at 260 mA, Center-Positive (Included)
Physical
Environmental Resistance
No
Housing
Steel
Dimensions
7.8 x 6.4 x 2" / 198 x 163 x 50 mm (without Antennas, Mounting Hardware)
Weight
35.2 oz / 998 g
Packaging Info
Package Weight
6.4 lb
Box Dimensions (LxWxH)
18.4 x 14.7 x 3.8"

Shure BLX Reviews

Very, Very good!

By Rodrigo
Rated 5 out of 5
Date: 2025-02-11

Very good microphone, reliable and has a deep sound. The best I've ever used.

See any errors on this page?

I’d like a 2nd mic and body pack to connect to ...

I’d like a 2nd mic and body pack to connect to this. Do I need to buy two of these systems, or will another body pack and mic
Asked by: RJ
The Shure BLX4 Tabletop Wireless Receiver included with the Shure BLX4 Wireless Microphone System with SM31FH Cardioid Fitness Headset Kit (H9: 512 to 542 MHz) is a single channel receiver, so it will only work with one transmitter at a time. In order to use two transmitters at the same time, you will either need two of the BLX4 receivers or the Shure BLX88 Dual-Channel Tabletop Wireless Receiver - H9: 512 to 542 MHz (B&H # SHBLX88H9), which will work with two transmitters simultaneously.
Answered by: Lisa S
Date published: 2025-03-13
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