g
19
g
20
HD669
OSHA CDC NIOSH
y
y
y
y
y
y
y
y
y
y
y
10 – 30,000Hz
56 Ω
98dB SPL (1mW)
200 mW
≤0.3%
5
225
3.5 mm
3.5mm 6.3mm
1
3
3.5mm
dB SPL
85
88
91
94
97
100
103
106
109
112
115
1991
8 (90dB SPL)
6 (92dB SPL)
4 (95dB SPL)
3
2
1.5 (102dB SPL)
1 (105dB SPL)
30 (110dB SPL)
15
NIOSH
and CDC
2002
8
4
2
1
30
15
7.5
< 4
< 2
~ 1
~ 30
