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.
Shure BLX14/CVL 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) |
