Features of the Shure BLX14R/MX53-H9 Wireless Headset System with MX153T/O Mic:

• For Presenters and Lecturers
• MX153 Omni Subminiature Earset Mic
• Lightweight Bodypack Transmitter
• Single-Channel Rackmount Receiver
• 123 Auto-Scan Frequencies
• Two Removable Antennas with Diversity
• Adjustable Output Level
• Rugged Metal Construction
• 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 H9:
512 to 542 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
Mounting Options Rackmount (with Included Hardware)
Rackmount Size 1 RU (1/2 Rack)
Antenna 2 x 1/4 Wave External, Detachable (Rear-Mount)
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:
-20.5 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
Adjacent Channel Isolation >50 dB
Power Requirements AC/DC Power Adapter
AC/DC Power Adapter 12 to 15 VDC at 260 mA, Center-Positive (Included)
Display & Indicators 1 x Backlit LCD (AF Level, Channel, Group, Metering, RF Level)
1 x LED (Transmitter Battery Status)
Housing Steel
Operating Temperature 0 to 135°F / -17 to 57°C
Dimensions 7.8 x 2 x 6.4″ / 198 x 50 x 163 mm (without Mounting Hardware, Antennas)
Weight 35.2 oz / 998 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 Earset
Sound Field Mono
Capsule Electret Condenser
Polar Pattern Omnidirectional
Frequency Range 20 Hz to 20 kHz
SNR 60 dB
Equivalent Noise Level 34 dB
Maximum SPL 107 dB SPL
Sensitivity -41 dBV/Pa
Dynamic Range 73 dB
Output Connectors 1 x TA4/Mini XLR 4-Pin Female (Lockable)
Cable Length 4′ / 1.22 m
Operating Voltage 1 to 5 V
Operating Temperature 0 to 135°F / -17 to 57°C
Weight 0.7 oz / 19.76 g