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Shure BLX14/SM31 Single Channel Bodypack Wireless Headset System

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5.00 LBS
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Product Description

New BLX Series Delivers Legendary Shure Sound and Performance With Intuitive, Simple Operation

BLX Wireless Systems, combining world-class design and construction with easy setup and operation for reliable wireless performance. Ruggedly engineered and ready to take from box to stage, the BLX series is optimal for musicians, singers, and presenters who want the best in professional wireless products at an affordable price.

The new BLX Wireless Systems perform right out of the box, a direct solution for individuals who want the benefits of wireless systems without the set-up obstacles. With the BLX series, it’s now easier than ever to unplug from wired microphones, achieve uncompromised high quality sound, and enjoy freedom of movement on stage. For complex environments, RF interference can be avoided with Shure’s one-touch QuickScan frequency scanning feature, which quickly locates the best open frequency channel. 

BLX is about making great performance available to everyone. The audio in BLX is engineered to match the tailored, refined sound of Shure’s high-end analog wireless systems, and it includes significant improvements in wireless stability.  “BLX also offers a choice in receiver form factors. The lightweight and ultra-portable BLX4 are perfect for musicians on-the-go. 

BLX Wireless Systems deliver a performance range of up to 300 feet, with up to 14 hours of battery life from two AA batteries. Systems are available in a wide offering of bodypack and handheld configurations with multiple handheld, lavalier, instrument, and headset microphone choices.




BLX1 Bodypack Transmitter:

TQG connection for use with Shure lavalier, headset, earset, and instrument microphones and guitar cables

Tactile on and off switch

Adjustable gain control

Lightweight, rugged construction


Rugged, comfortable headworn microphone with increased moisture-resistance for active speech and fitness applications




BLX4 Single Channel Receiver:

One-touch QuickScan frequency selection quickly locates the best open frequency

Up to 12 compatible systems per frequency band

Two-color audio status LED indicators

LED display

XLR and ¼” output connectors

SM31FH Cardioid Condenser Headset Microphone 

The rugged and durable SM31FH is a cardioid condenser microphone constructed with hydrophobic materials that make it ideal for true performance in fitness instruction applications.

The moisture-repellent cartridge housing ensures a long product life by protecting the microphone from the corrosion damage that causes typical fitness instruction headsets to fail.  Available in bundled BLX and GLX-D wireless systems, the SM31FH features TA4F 4-pin (TQG) connectors that make it a viable replacement for any Shure wireless headset system.



Wireframe headset fits securely and comfortably for fitness and aerobics instructors

Moisture-repellent hydrophobic fabric protects the microphone cartridge from harmful corrosion that occurs in humid environments

Flexible gooseneck provides discrete adjustment capabilities to optimize placement for greatest isolation

Lightweight and low-profile design won’t fatigue instructors during high-impact use

TA4F (TQG) connector is compatible with any Shure wireless bodypack

Included windscreen tames plosive, breath, and wind noise for clean and intelligible sound

Tailored frequency response ideal for crisp, clear vocal reproduction

Available with bundled BLX and GLX-D wireless systems

Legendary Shure precision engineering for durability and perfor


Type    Electret Condenser

Frequency Response    45–20,000 Hz


Polar Pattern    Cardioid

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