Shure BLX14/SM31

Description

The Shure BLX14/SM31 Wireless Fitness Headset System combines professional-quality sound with simple setup and up to 14 hours battery life for legendary audio performance right out of the box. The system includes BLX4 tabletop single-channel receiver, SM31FH headset microphone (w/ moisture-repelling construction) with BLX1 bodypack transmitter, clothing clip, power supply, 2 AA batteries, windscreens, and user guide.

Features

The Shure BLX14/SM31 Headset Wireless System gives you world-class design and rock-solid build quality, along with easy setup and operation. Thanks to Shure’s cutting-edge QuickScan technology, frequency-selection hassles are a thing of the past. The system includes the BLX4 receiver, the BLX1 bodypack transmitter, and the ultra-tough SM31 Headset microphone. This mic has been engineered to withstand moisture and humidity, which makes it a perfect option for fitness instructors. If you’re ready to perform untethered, Shure’s BLX wireless systems are a smart, affordable choice. Enjoy legendary Shure sound and performance. Take the stage confidently with the Shure BLX14/SM31 Headset Wireless System.

Convenient and easy to use

Providing up to 14 hours of use with two AA batteries, Shure’s BLX Series transmitters let you perform with confidence that the show will go on. And when it comes to frequency selection, the live sound gurus here at Sweetwater swear by the fast, convenient frequency matching afforded by the Shure BLX’s group and channel selection buttons.

BLX4 Wireless Receiver

• ¼” and XLR audio outputs
• Up to 12 compatible systems (region dependent)
• Microprocessor-controlled internal antenna diversity
• One touch QuickScan locates the best open frequency
• Two color audio status indicator LED
• Green: Normal audio levels
• Red: Excessive audio levels (overload/clipping)

BLX1 Wireless Bodypack Transmitter

• Adjustable gain control
• Power and battery status LED
• Quick and easy frequency matching
• 100 m (300 ft.) operating range (line of sight)
• AA batteries (included) provide up to 14 hours of continuous use

SM31FH Fitness Headset Condenser Microphone

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. 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
• Legendary Shure precision engineering for durability and performance

Versatile and expandable

A choice of single-channel, single-channel half-rack, and dual-channel receivers, as well as vocal, guitar, headset, and lavalier options, makes Shure’s BLX wireless systems quite versatile. And the ability to run up to 12 compatible systems per band protects your investment, letting you start out modestly and expand as necessary.

Specifications

• System

  • Working Range: 91 m (300 ft) Line of Sight
  • Audio Frequency Response: 50 to 15,000 Hz
  • Total Harmonic Distortion Ref. ±33 kHz deviation with 1 kHz tone: 0.5%, typical
  • Dynamic Range: 100 dB, A-weighted, typical
  • Operating Temperature: -18°C (0°F) to 57°C (135°F)
  • Polarity: Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low-impedance output) and the tip of the high impedance 1/4-inch output.

• BLX1 Transmitter

  • Audio Input Level
    • max: -16 dBVmaximum
    • min (0 dB): +10 dBVmaximum
  • Gain Adjustment Range: 26 dB
  • Input Impedance: 1 MΩ
  • RF Transmitter Output: 10 mW, typical
  • Dimensions: 4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm) H x W x D
  • Weight: 2.6 oz. (75 g), without batteries
  • Housing: Molded ABS
  • Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
  • Battery Life: up to 14 hours (alkaline)

• BLX4 Receiver

  • Output Impedance
    • XLR connector: 200 Ω
    • 6.35 mm (1/4″) connector: 50 Ω
  • Audio Output Level Ref. ±33 kHz deviation with 1 kHz tone
    • XLR connector: –27 dBV (into 100 kΩ load)
    • 6.35 mm (1/4″) connector: –13 dBV (into 100 kΩ load)
  • RF Sensitivity: -105 dBm for 12 dB SINAD, typical
  • Image Rejection: >50 dB, typical
  • Dimensions: 1.57 in. X 7.40 in. X 4.06in. (40 mm X 188 mm X 103 mm) H x W x D
  • Weight: 8.5 oz. (241 g)
  • Housing: Molded ABS
  • Power Requirements: 12–15 V DC @ 235 mA (BLX88, 320 mA), supplied by external power supply (tip positive)