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 crafted and available in a variety of configurations, it's the most accessible way to own the stage.
The BLX14/SM31 wireless earphone system includes BLX4 wireless receiver, BLX1 bodypack transmitter, SM31 fitness headset microphone, power supply, clothing clip, windshields and user guide.
The SM31FH cardioid condenser microphone with analog transmission features moisture-wicking construction for real-world performance in wet applications where corrosion is common.
Accessories included:
1 - PS24 power supply
1 - Clothes clip
1 - Windshield
1 - Carrying case
Specificities
SYSTEM
Working range: 91 m (300 ft) Line of sight
Audio frequency response: 50 to 15,000 Hz• 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
*Note: Depends on microphone type
BLX1
Audio input level (mental/max): -16 dBV to +10 dBV (0 dB)
Gain adjustment range: 26 dB
Input impedance: 1 MΩ
RF transmitter output: 10 mW, typical
Dimensions (H x W x D): 4.33" x 2.52" x 0.83" x 0.83". (110mm x 64mm x 21mm)
Weight: 2.6 oz. (75 g), without batteries
Housing: Molded ABS
Power requirement: 2 LR6 AA batteries, 1.5 V, alkaline
Battery life: up to 14 hours (alkaline)
Audio input level
(0dB) -20 dBV maximum
(-10dB)-10dBV maximum
Gain adjustment range: 10 dB
RF transmitter output: 10 mW, typical
Dimensions: 8.82" x 2.09" (224mm x 53mm) L x Dia.
Weight: 7.7 oz. (218 g) without batteries
Housing: Molded ABS
Power requirement: 2 LR6 AA batteries, 1.5 V, alkaline
Battery life: up to 14 hours (alkaline)
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
XLR connector: 27 dBV (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 (H x W x D): 1.57" x 7.40" x 4.06". (40mm x 188mm x 103mm)
Weight: 48.5 oz. (241g)
Housing: Molded ABS
Power supply required: 1215 V DC @ 160 mA, powered by external power supply (positive end)
