Shure BLX14/SM31-H9 Wireless Headset System

Features of the Shure BLX14/SM31-H9 Wireless Headset System:

• For Fitness Instructors
• SM31FH Cardioid Fitness Headset Mic
• Moisture-Repellent Mic Construction
• Lightweight Bodypack Transmitter
• Single-Channel Tabletop Receiver
• 123 Auto-Scan Frequencies
• Internal Antenna Diversity
• 14-Hr AA Batteries
• Expandable to 12 Mic Channels/300′ Range

Specifications:

System
Wireless Technology Analog UHF
Number of RF Channel Frequencies 123
Included Transmitters 1 x 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
Dynamic Range 100 dBA
Receiver
Receiver Type Tabletop
Antenna 2 x Internal, Fixed
Number of Audio Channels 1
Audio I/O 1 x XLR 3-Pin Male Balanced Output
1 x 1/4″ TS Female Unbalanced Output
Audio Output Level XLR Output:
-27 dBV (Mic Level)
1/4″ Output:
-13 dBV (Instrument Level)
Frequency Response 50 Hz to 15 kHz (Dependent on Mic)
Impedance XLR Output:
200 Ohms
1/4″ Output:
50 Ohms
Power Requirements AC/DC Power Adapter
AC/DC Power Adapter 12 to 15 VDC at 160 mA, Center-Positive (Included)
AC Input Power 100 to 240 VAC, 50 / 60 Hz at 150 mA
Display & Indicators 1 x Multi-Segment LED (Channel, Group)
2 x LED (AF Level, Sync)
Housing ABS
Operating Temperature 0 to 135°F / -17 to 57°C
Dimensions 7.4 x 1.6 x 4.1″ / 188 x 40 x 103 mm
Weight 8.5 oz / 241 g
Transmitter
Transmitter Type Bodypack
RF Output Power 10 mW
Audio I/O 1 x TA4/Mini XLR 4-Pin Male Input (Lockable)
Muting Off/On Switch
Auto-Level Control No
Gain Range -16 to +10 dB
Sync Method Manual
Antenna 1 x Flexible Whip, Fixed (Beltpack)
Power Requirements Battery
Battery Type 2 x AA (Included)
Approx. Battery Life 14 Hours (Alkaline)
Display & Indicators 1 x Multi-Segment LED (Channel, Group)
1 x 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)
Microphone
Microphone Type Headset
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 Connectors 1 x TA4/Mini XLR 4-Pin Female (Lockable)
Cable Length 3.61′ / 1.1 m
Operating Voltage 5 V
Weight 2.12 oz / 60 g