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49
dB
(1 Pa/V)
Hz
48
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
Curve di frequenza e caratteristiche di direttività
Misurazione della trasmissione della cuffia nel campo di
diffusione
Diagramma polare del microfono
Risposta in frequenza del microfono
misurato in campo vicino con bocca artificiale B & K 4219
Dati tecnici
HMD 280 PRO / HMD 281 PROȊHMD 280-13 / HMD 281-13
Cuffia
Classificazione
(secondo IEC 268-7) 268-7-IEC-DCSC-64R0-2/-1 Ȋ 268-7-IEC-DCSC-03R2-2/-1
Trasduttore dinamico Ȋ dinamico
Impedenza 64 (secondo IEC 268-7) Ȋ 300 (secondo IEC 268-7)
Carico nominale continuo 0,5 W (secondo IEC 268-7) Ȋ 0,5 W (secondo IEC 268-7)
Adattamento all’orecchio circumaurale Ȋ circumaurale
Campo di trasmissione
(–10 dB in riferimento a 1 kHz) 8 Hz—25 kHz Ȋ 8 H—25 kHz
SPL 102 dB (secondo IEC 268-7) Ȋ 102 dB (secondo IEC 268-7)
113 dB / 1 V
RMS
Ȋ 107 dB / 1 V
RMS
Attenuazione del rumore max. 32 dB Ȋ max. 32 dB
Fattore di distorsione < 0,1 % (con 1 kHz, 100 dB SPL) Ȋ < 0,1 % (con 1 kHz, 100 dB SPL)
peso circa 310 g / 245 g Ȋ circa 310 g / 245 g
Pressione esercitata dall’archetto circa 4 N Ȋ circa 4 N
Lunghezza del cavo a spirale min. 1 m Ȋ min. 1 m
max. 3 m Ȋ max. 3 m
Microfono
Traduttore microfono dinamico Ȋ microfono dinamico
Tipo di microfono ricevitore a gradiente di pressione Ȋ ricevitore a gradiente di pressione
Direttività super cardioide Ȋ super cardioide
(vedi diagramma polare) Ȋ (vedi diagramm polar)
Impedenza nominale 200 Ȋ 200
Sensibilità –63 dBV/Pa (bei 1 kHz) Ȋ –63 dBV/Pa (bei 1 kHz)
0,7 mV/Pa (bei 1 kHz) Ȋ 0,7 mV/Pa (bei 1 kHz)
Risposta in frequenza de 50 a 13500 Hz Ȋ de 50 a 13500 Hz
25


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