Micro Không Dây Shure BLX14/SM31 – Wireless

Micro Không Dây Shure BLX14/SM31 – Wireless

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.

BLX4

• 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

• 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)

Micro SM31

• Type: Electret Condenser
• Frequency Response: 45 to 20,000 Hz
• Polar Pattern: Unidirectional (Cardioid)
• Output Impedance @ 1 kHz: 600 Ω
• Audio Output Level : -50 dBV/Pa
• Signal-To-Noise Ratio[1] @ 1 kHz: 66 dB
• Maximum SPL[1] 1000 Ω load, @ 3% THD: 145.0 dB
• Dynamic Range[1] @ 1 kHz, 1000 Ω load: 117.0 dB
• Equivalent Output Noise[1]: Typical, A-Weighted28 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.)