Sennheiser HMD 280 PRO User Manual
HMD 280 pro
Headsets | Communications Headset
General Description
The HMD 280 pro headset has been specially designed for communications in high-noise environments. Its dynamic, super-cardioid microphone
has been optimised for close talking distances.
Cat No. 004976
Technical Data
Headphones
Transducer principle..............................................................dynamic
Ear coupling ........................................................ circumaural, closed
Frequency response ....................8 – 25,000 Hz (–10 dB / 1 kHz)
Sound pressure level............................. 102 dB (as per IEC 268-7)
Attenuation .......................................................................max. 32 dB
Nominal impedance ...............................................64 Ω per system
Load rating.................................................................................. 0.5 W
THD ............................................................................................ < 0.1 %
Contact pressure.............................................................. approx. 6 N
Weight (w/o cable).....................................................approx. 310 g
Microphone
Transducer principle..............................................................dynamic
Frequency response .................................................50 – 13,500 Hz
Pick-up pattern ...........................................................super-cardioid
Sensitivity (free field, no load, 1 kHz).............................. 1 mV/Pa
Nominal impedance ................................................................. 200 Ω
Features
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Noise-compensated microphone with extremely low handling noise
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Microphone can be worn on either left or right-hand side
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Easily replaceable, single-sided coiled cable
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Very good attenuation of background noise
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Space-saving design with rotating earpieces
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Replaceable parts for long life
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Lightweight design
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Delivery includes: 1 HMD 280 pro
1 windshield
Replacement Parts
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Ear pads (1 pair) Cat. No. 085733
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Headband padding Cat. No. 083321
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Connection cable Cat. No. 082072
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Windshield Cat. No. 083411
Product Variants
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HMD 280-13: as HMD 280 pro, but with 300 Ω
headphone impedance Cat. No. 004977
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HMD 281 pro: as HMD 280 pro, but single-sided
headphone, weight (w/o cable): approx. 245 g Cat. No. 004978
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HMD 281-13: as HMD 281 pro, but with
300 Ω head phone impedance Cat. No. 004979
Connections
Connection cable...................................unterminated coiled cable,
min. 1 m/max. 3 m
Microphone frequency response (near field)
measured with B&K 4219 artificial mouth
-50
-55
-60
-62.5
-65
-70
dB
(V/Pa)
-75
-80
-85
-90
-95
-100
200
90
500
2k
1k
Hz
5k
20k
10k
Microphone Pick-up Pattern
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