Specifications; Frequency Response Curves And Polar Diagram - Sennheiser HMD 280 PRO Instructions For Use Manual

Specifications

HMD 280 PRO / HMD 281 PRO HMD 280-13 / HMD 281-13
Headphones
Classification
(as per IEC 268-7) 268-7-IEC-DCSC-64R0-2/-1
Transducer principle dynamic
64 Ω (as per IEC 268-7)
Impedance
Long-term max. input power 0.5 W (as per IEC 268-7)
Ear coupling circum-aural
Frequency response
(–10 dB referred to 1 kHz) 8 Hz—25 kHz
Sound pressure level 102 dB (as per IEC 268-7)
113 dB / 1 V
Ambient noise attenuation max. 32 dB
THD < 0.1 % (at 1 kHz, 100 dB SPL)
Weight approx. 310 g / 245 g
Contact pressure approx. 4 N
Length of coiled cable min. 1 m
max. 3 m
Microphone
Transducer principle dynamic
Type of microphone pressure-gradient
Pick-up pattern super-cardioid (see polar diagram)
200 Ω
Nominal impedance
Close-talking sensitivity –63 dBV/Pa (at 1 kHz)
0.7 mV/Pa (at 1 kHz)
Near field frequency response 50–13,500 Hz
24
268-7-IEC-DCSC-03R2-2/-1
dynamic
300 Ω (as per IEC 268-7)
0.5 W (as per IEC 268-7)
circum-aural
8 Hz—25 kHz
102 dB (as per IEC 268-7)
107 dB / 1 V
rms rms
max. 32 dB
< 0.1 % (at 1 kHz, 100 dB SPL)
approx. 310 g / 245 g
approx. 4 N
min. 1 m
max. 3 m
dynamic
pressure-gradient
super-cardioid (see polar diagram)
200 Ω
–63 dBV/Pa (at 1 kHz)
0.7 mV/Pa (at 1 kHz)
50–13,500 Hz

Frequency response curves and polar diagram

Diffuse field frequency response – Headphones
dB
(1 Pa/V)
Hz
Frequency response curve – Microphone
(measured in the near field with artificial mouth B&K 4219)
-50
-55
-60
-62.5
-65
dB -70
(V/Pa)
-75
-80
-85
-90
-95
-100
90 200 500 1k 2k
Hz
Polar diagram – Microphone
5k 10k 20k
25