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Sennheiser HMD 280 PRO User Manual

Hmd 280 pro, Headsets | communications headset

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Cat No. 004976

HMD 280 pro

Headsets |

Communications Headset

General Description

The HMD 280 pro headset has been specially designed for communica-
tions in high-noise environments. Its dynamic, super-cardioid microphone
has been optimised for close talking distances.

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

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

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

Connections

Connection cable...................................unterminated coiled cable,

min. 1 m/max. 3 m

dB
(V/Pa)

Hz

-100

-95

-90

-85

-80

-75

-70

-65

-62.5

-60

-55

-50

90

200

500

1k

2k

5k

10k

20k

Microphone frequency response (near field)
measured with B&K 4219 artificial mouth

Microphone Pick-up Pattern