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73
dB
(1 Pa/V)
Hz
72
dB
(V/Pa)
Hz
-100
-95
-90
-85
-80
-75
-70
-65
-62.5
-60
-55
-50
90
200
500
1k
2k
5k
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20k
Frequentiekarakteristieken en richtwerkingen
Diffuusveld-overdrachtsmaat van de hoofdtelefoon
Pooldiagrammen van de microfoon
Frequentiekarakteristiek van de microfoon (meting in het
nabije veld)
gemeten met kunstmond B&K 4219
Technische gegevens
HMD 280 PRO / HMD 281 PRO ȊHMD 280-13 / HMD 281-13
Hoofdtelefoon
Classificatie
(volgens IEC 268-7) 268-7-IEC-DCSC-64R0-2/-1 Ȋ 268-7-IEC-DCSC-03R2-2/-1
Omzetprincipe dynamisch Ȋ dynamisch
Impedantie 64 (volgens IEC 268-7) Ȋ 300 (volgens IEC 268-7)
Continu ingangsvermogen 0,5 W (volgens IEC 268-7) Ȋ 0,5 W (volgens IEC 268-7)
Koppeling aan het oor oor omsluitend Ȋ oor omsluitend
Overdrachtsgebied
(–10 dB m.b.t. 1 kHz) 8 Hz—25 kHz Ȋ 8 Hz—25 kHz
Geluidsniveau 102 dB (volgens IEC 268-7) Ȋ 102 dB (volgens IEC 268-7)
113 dB / 1 V
RMS
Ȋ 107 dB / 1 V
RMS
Geluidsisolatie max. 32 dB Ȋ max. 32 dB
Vervormingsfactor < 0,1 % (bij 1 kHz, 100 dB SPL) Ȋ < 0,1 % (bij 1 kHz, 100 dB SPL)
Gewicht ca. 310 g / 245 g Ȋ ca. 310 g / 245 g
Beugelaandrukkracht ca. 4 N Ȋ ca. 4 N
Lengte van de spiraalkabel min. 1 m Ȋ min. 1 m
max. 3 m Ȋ max. 3 m
Microfoon
Omzetprincipe dynamische microfoon Ȋ dynamische microfoon
Microfoontype drukgradient-ontvanger Ȋ drukgradient-ontvanger
Richtkarakteristiek superniervorm Ȋ superniervorm
(zie diagram richtwerking) Ȋ (zie diagram richtwerking)
Nominale impedantie 200 Ȋ 200
Dichtbij-spraakoverdrachts- –63 dBV/Pa (bij 1 kHz) Ȋ –63 dBV/Pa (bij 1 kHz)
(gevoeligheid) 0,7 mV/Pa (bij 1 kHz) Ȋ 0,7 mV/Pa (bij 1 kHz)
Nabij-veld-overdrachtsgebied 50–13500 Hz Ȋ 50–13500 Hz
37


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