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Shure BLX14/CVL Wireless Lavalier Microphone System

The Shure BLX14/CVL Wireless Lavalier Microphone System includes a BLX4 single-channel wireless receiver, a BLX1 bodypack transmitter, and a CVL lavalier mic. The system is set to Shure's K12 frequency band and operates between 614 - 638 MHz. The BXL1 bodypack transmitter has a 300' line of sight operation range with the BLX4 receiver. It is powered by two included AA batteries that can provide up to 14 hours of operation. The BLX4 receiver features microprocessor-controlled internal antenna diversity that helps prevent interference and signal dropouts. Its one-touch QuickScan feature detects the most interference-free frequency and sets the channel to it for fast setup.  

Specifications:

CVL Lavalier Condenser Microphone

Type Electret condenser
Frequency Response 50 Hz to 20 kHz
Polar Pattern Cardioid
Output Impedance 600 ? @ 1 kHz, typical
Audio Output Level -43.5 dBV/Pa
Signal to Noise Ratio 72 dB @ 1 kHz
Maximum SPL 139 dB, @ 1 kHz (1,000 ? load)
Dynamic Range 117 dB, @ 1 kHz (1,000 ? load)
Output Noise 22 dB, typical, A-weighted
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 50" (1.3 m)
Connector TA4F
Weight 0.88 oz (25 g)

Single Channel Wireless Recieiver

Output 1x XLR Output 1x 1/4" (6.35 mm) Output
Output Impedance XLR: 200 ? 1/4": 50 ?
Audio Output Level XLR Connector: -27 dBV into 100k? Load (Reference /-33 kHz with 1 kHz Tone) 1/4": -13 dBV into 100k? Load (Reference /-33 kHz with 1 kHz Tone)
RF Sensitivity -105 dBm for 12 dB SINAD, Typical
Image Rejection >50 dB, Typical
Housing Molded ABS
Power Requirement 12 to 15 V DC @ 160 mA, Supplied by External Power Supply (Tip Positive)
Dimensions (H x W x D) 1.5 x 7.4 x 4.1" (40 x 188 x 103 mm)
Weight 8.5 oz (241 g)

BLX1 Bodypack

Audio Input Gain: -16 dBV (Maximum), 10 dBV (Minimum
Gain Adjustment Range 26 dB
Input Impedance 1 M?
RF Output 10 mW, Typical
Housing Molded ABS
Power Requirement 2x LR6 AA Batteries, 1.5 V Alkaline
Battery Life Up to 14 Hours
Dimensions (H x W x D) 4.3 x 2.5 x 0.8" (110 x 64 x 21 mm)
Weight 2.6 oz (75 g)