Sennheiser HMD 280 PRO - Manual

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
j Noise-compensated microphone with extremely low handling noise
j Microphone can be worn on either left or right-hand side
j Easily replaceable, single-sided coiled cable
j Very good attenuation of background noise
j Space-saving design with rotating earpieces
j Replaceable parts for long life
j Lightweight design
j Delivery includes: 1 HMD 280 pro
1 windshield
Replacement Parts
j Ear pads (1 pair) Cat. No. 085733
j Headband padding Cat. No. 083321
j Connection cable Cat. No. 082072
j Windshield Cat. No. 083411
Product Variants
j HMD 280-13: as HMD 280 pro, but with 300 Ω
headphone impedance Cat. No. 004977
j HMD 281 pro: as HMD 280 pro, but single-sided
headphone, weight (w/o cable): approx. 245 g Cat. No. 004978
j 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
Ω
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