The Shure SM31FH cardioid condenser microphone with analogue transmission, designed for use in fitness instruction, features moisture-repelling construction for true performance in humid applications where corrosion damage is common.
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-built and available in a variety of configurations, it’s the most accessible way to own the stage.
Includes BLX4 wireless receiver, BLX1 bodypack transmitter, SM31 fitness headset microphone, power supply, clothing clip, windscreens, and user guide.
Product Specifications:
Wireless Technology: Analog UHF
Number of RF Channel Frequencies: 123
Included Transmitters: 1x Bodypack
Diversity: Antenna Diversity
RF Frequency Band: H10: 542 to 572 MHz
RF Bandwidth: 24 MHz
RF Channel Scanning: Auto-Scan
Max Operating Range: 300' / 91.4 m (Line of Sight)
Max Transmitters per Band: 12
Built-In Recorder: No
Timecode Support: No
Mobile App Compatible: No
Dynamic Range: 100 dBA
Receiver Type: Tabletop
Antenna: 2x Internal, Fixed
Number of Audio Channels: 1
Built-In Microphone: No
Audio I/O:
1x XLR 3-Pin Male Balanced Output
1x 1/4"" TS Female Unbalanced Output
Frequency Response: 50 Hz to 15 kHz (Dependent on Mic)
USB Class-Compliant: No USB Connectivity
Power Requirements: AC/DC Power Adapter
AC/DC Power Adapter: 12 to 15 VDC at 160 mA, Center-Positive (Included)
Input Power: 100 to 240 VAC, 50 / 60 Hz at 150 mA
Housing: ABS
Dimensions: 7.4 x 1.6 x 4.1" / 188 x 40 x 103 mm
Weight: 8.5 oz / 241 g
Transmitter Type: Bodypack
RF Output Power: 10 mW
Built-In Microphone: No
Audio I/O: 1x TA4/Mini-XLR 4-Pin Male Input (Locking)
Muting: Off/On Switch
Auto-Level Control: No
Gain Range: -16 to +10 dB
Sync Method: Manual
Antenna: 1x Flexible Whip, Fixed (Belt pack)
Power Requirements: Battery
Battery Type: 2x AA (Included)
Approx. Battery Life: 14 Hours (Alkaline)
Display & Indicators:
1x Multi-Segment LED (Channel, Group)
1x LED (Battery Status, Power)
Housing: ABS
Dimensions: 2.5 x 4.3 x 0.8" / 64 x 110 x 21 mm
Weight: 2.6 oz / 75 g (without Batteries)
Color: Black
Sound Field: Mono
Capsule: Electret Condenser
Polar Pattern: Cardioid
Frequency Range: 45 Hz to 20 kHz
SNR: 66 dB
Maximum SPL: 145 dB SPL
Impedance: 600 Ohms
Dynamic Range: 117 dB
Output Connector: 1x TA4F/Mini-XLR 4-Pin Female (Locking)
Cable Length: 3.61' / 1.1 m
Operating Voltage: 5 V
Weight: 2.12 oz / 60 g
Shipping Weight: 2.84 lbs
Shipping Dimensions (LxWxH): 13.55 x 11.8 x 4.25"