Sennheiser HMD 280 PRO manual General Description, Features, Technical Data Headphones

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

Noise-compensated microphone with extremely low handling noise

Microphone can be worn on either left or right-hand side

Easily replaceable, single-sided coiled cable

Very good attenuation of background noise

Space-saving design with rotating earpieces

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
Connections
Connection cable	unterminated coiled cable,
		min. 1 m/max. 3 m

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

Replaceable parts for long life

Lightweight design

￿Delivery includes: 1 HMD 280 pro

1 windshield
Replacement Parts
Ear pads (1 pair)	Cat. No. 085733
Headband padding	Cat. No. 083321
Connection cable	Cat. No. 082072
￿Windshield	Cat. No. 083411

	-50
	-55
	-60
	-62.5
	-65
dB	-70
(V/Pa)
	-75
	-80
	-85
	-90
	-95
	-100	90	200	500	1k	Hz	2k	5k	10k	20k

Microphone Pick-up Pattern

Product Variants

HMD 280-13: as HMD 280 pro, but with 300 Ω
headphone impedance	Cat. No. 004977
HMD 281 pro: as HMD 280 pro, but single-sided
￿headphone, weight (w/o cable): approx. 245 g	Cat. No. 004978
HMD 281-13: as HMD 281 pro, but with
300 Ω headphone impedance	Cat. No. 004979