The BLX14/SM31 Fitness Wireless Headworn Microphone System from Shure is ideal for capturing audio while providing the maximum capacity for movement--ideal for aerobics instructors, fitness trainers, and more.
This system includes a BLX4 Wireless Receiver, a BLX1 Bodypack Transmitter, a SM31 Fitness Headset Microphone, and the accessories you need to start moving with your sound.
Shure BLX14/SM31 System Features
- This headworn mic system captures audio while the speaker is in movement
- It's ideal for aerobics instructors, fitness trainers, and more
- Moisture-repelling construction protects microphone from humidity and sweat
- Simple setup and an intuitive interface for legendary audio performance
- Wireframe headset stays firmly in place during workouts
- BLX4 Wireless Receiver1
- BLX1 Bodypack Transmitter1
- SM31 Fitness Headset Microphone1
- PS24 Power Supply1
- Clothing Clip1
- Windscreen1
- 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 (HxWxD): 4.33x2.52x0.83" (110x64x21mm)
- 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 (HxWxD): 1.57x7.4x4.06" (40x188x03mm)
- 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)
More about the SM31 Headset Microphone
Designed to handle the punishment of high-activity wearers, this mic boasts a tailored frequency response ideal for crisp, clear vocal reproduction, and features TA4F 4-pin (TQG) connectors for compatibility with myriad Shure wireless headset systems.
More about the BLX1 Bodypack Transmitter
The lightweight yet rugged build of the BLX1 means you don’t have to worry about damage during everyday use, and it easily clips onto a belt, pocket, or guitar strap for optimal placement.
A TQG connection on this transmitter enables connection with lavalier, headset, earset, and instrument mics, as well as guitar cables.
Turn the transmitter on and off and control your gain with controls on the bodypack itself. Its group and channel selection buttons enable quick frequency matching with the receiver.
More about the BLX4 Wireless Receiver
The BLX4 can expand to up to 12 mic channels, making it a great choice to start and grow your sound system. Setup is quick and easy with QuickScan frequency selection, which also provides improved linearity and frequency response.
The microprocessor-controlled internal antenna diversity reduces dropouts, while built-in 1/4" and XLR outputs enable connection to PA systems and mixing boards.
More about Shure's BLX Wireless Systems
With consistent reliability across a wide variety of transmitters, receivers, and accessories, you’re sure to find a sound that works for you from this extensive selection of BLX series gear.
Go wireless with confidence using this specially engineered system that gives you pristine audio clarity without noise interference or disappointing dropouts. BLX series gear gives you the versatility and selection to pick and choose precisely the equipment to fit your needs whatever that venue or performance.
Whether you’re a performer or presenter, BLX Wireless is the ideal choice for producing stellar, dependable sound.
