Description
Shure BLX14/SM31 Wireless Cardioid Fitness Headset Microphone System (H9: 512 to 542 MHz)
The BLX14/SM31 Headworn Wireless System is part of the BLX wireless systems family. Shure BLX Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage. Includes BLX4 wireless receiver, BLX1 bodypack transmitter, SM31 fitness headset microphone, power supply, clothing clip, windscreens, and user guide.
Product Highlights:
- Gain Max: -16 dBV maximum
- Gain Min (0 dB): +10 dBV maximum
- Gain Adjustment Range: 26 dB
- Input Impedance: 1 M
- RF Transmitter Output: 10 mW, typical, varies by region
- Dimensions (H x W x D): 110 mm X 64 mm X 21 mm
- Weight: 75 g (2.6 oz.), without batteries
- Housing: Molded ABS
- Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
- Battery Life: up to 14 hours (alkaline)
- BLX4 Single Channel Receiver
- Output Impedance: XLR connector: 200 ohms, 6.35 mm (1/4") connector: 50 ohms
- Audio Output Level: Ref. ±33 kHz deviation with 1 kHz tone
- XLR connector: -27 dBV (into 100 ohms load)
- 6.35 mm (1/4") connector: -13 dBV (into 100 ohms load)
- RF Sensitivity: -105 dBm for 12 dB SINAD, typical
- Image Rejection: greater than 50 dB, typical
- Dimensions(H x W x D): 40 mm X 188 mm X 103 mm
- Weight: 241 g (8.5 oz.)
- Housing: Molded ABS
- Power Requirements: 12-15 V DC @ 160 mA (BLX88, 320 mA), supplied by external power supply (tip positive)
- SM13FH Fitness Condenser Microphone
- Type: Electret Condenser
- Frequency Response: 45 to 20,000 Hz
- Polar Pattern: Unidirectional (Cardioid)
- Output Impedance @ 1 kHz: 600 ohms
- Audio Output: Level -50 dBV/Pa
- Signal-To-Noise Ratio @ 1 kHz: 66 dB
- Maximum SPL 1000 ohms load, @ 3% THD: 145.0 dB
- Dynamic Range @ 1 kHz, 1000 ohms load: 117.0 dB
- Equivalent Output Noise, Typical, A-Weighted: 28 dB
- Power Requirements: +5 V DC (nominal), 10 V maximum (DC bias)
- Polarity: Positive pressure on diaphragm produces positive voltage on pin 3 with respect to pin 1
- Cable: 1.1 m (45 in.)
- Connector: TA4F
- Net Weight: 60 g (2.11 oz.)
- Manufacturer: Shure
- Model: BLX14/SM31-H9
- Warranty: See manufacturer website for details
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