The Shure BLX14/SM31 brings fitness and aerobics instructors a cost-effective wireless headset microphone system with quality sound, simple setup, intuitive operation, and dependable performance right out of the box. It includes the compact and lightweight BLX4 single-channel tabletop receiver with internal antennas, ideal for portable use.

The BLX14/SM31 also includes an SM31FH cardioid fitness headset mic with windscreen and a bodypack transmitter. The headset is specifically designed to stay comfortable and securely in place, even during the most active workouts. Moisture-repellent hydrophobic fabric helps protect the microphone capsule from sweat and humidity.

The receiver features one-touch QuickScan frequency selection to quickly search 123 available frequencies and locate a clean RF channel in case of interference. The system provides up to 14 hours of continuous use with two AA batteries, at a range up to 300'. Up to 12 mic channels can operate simultaneously in each frequency band.

Application: Fitness/Active

Configuration: Headset Wireless System

System: Simultaneous Channels: Up to 12

System: Analog/Digital: Analog

System: Operating Range: 300 ft. Line-of-sigh

System: Frequency Response: 50Hz-15kHz

System: Microphone Included: Yes

System: Channel Selection: Manual

Microphone: Form Factor: Headworn

Microphone: Color: Black

Microphone: Type: Condenser

Microphone: Polar Pattern: Cardioid

Microphone: Max SPL: 145dB SPL

Microphone: Connector: TA4F

Microphone: Frequency Response: 45Hz-20kHz

Microphone: Cable Length: 3.61 ft.

Microphone: Self Noise: 28dB

Transmitter: Form Factor: Bodypack

Transmitter: Dynamic Range: 117dB (A weighted)

Transmitter: Battery Type: 2 x AA

Transmitter: Battery Life: Up to 14 hours

Transmitter: Connector: TA4M

Transmitter: Dimensions: 2.5" x 4.3" x 0.8"

Transmitter: Weight: 0.16 lbs.

Receiver: Antenna Type: Fixed

Receiver: Type: T able Top

Receiver: Front Panel Display: Yes

Receiver: Displays: LED

Receiver: Outputs:1 x XLR, 1 x 1/4"

Receiver: Dimensions:7.4" x 1.6" x 4.1"

Receiver: Weight:0.53 lbs.

Shure BLX14/SM31 Wireless Cardioid Fitness Headset Microphone System