A:C Foldable headband earmuff with foam cushions
Optime I H510F
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:6 L
Optime II H520F
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:6 L
A) STANDARD EN 352-3:2020
A:D Carrier attachment earmuff with foam cushions
Optime I H510P3
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
Optime II H520P3
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
9.6
15.4
27.2
33.0
2.4
2.1
2.6
2.7
7.1
13.2
24.6
30.3
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
12.4
20.7
31.6
38.5
2.5
2.0
2.0
2.2
9.9
18.7
29.6
36.2
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
9.4
15.7
27.0
32.4
2.9
2.1
2.7
2.1
6.5
13.7
24.3
30.3
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
13.0
21.0
33.1
36.7
2.2
2.0
2.2
2.4
10.8
19.1
30.9
34.3
H
35.7
38.3
34.5
35.3
2.5
2.8
5.6
2.4
33.1
35.5
28.9
33
H
36.3
36.5
35.4
36.7
2.7
2.3
3.6
1.9
33.5
34.2
31.7
35
H
35.1
38.3
33.5
35.0
2.6
2.1
4.2
1.8
32.5
36.2
29.3
33
H
37.0
38.2
35.1
37.1
2.8
2.4
2.8
1.5
36
34.2
35.7
32.4
A:5
M
L
SNR
25.9
16.7
28.1
1.9
2.1
1.9
171g
24
15
26
A:5
M
L
SNR
30.2
20.5
31.8
1.7
2.2
1.6
214g
28
18
30
A:5
M
L
SNR
25.9
16.8
28.1
1.7
2.3
1.8
176g
24
14
26
A:5
M
L
SNR
30.5
21.0
32.2
1.4
1.8
1.3
219g
29
19
31