Husqvarna X-SYNC - Bluetooth Wireless Technology Data; Noise Attenuation Standards (ANSI)

125 250 500 1000
2000 3150 4000
6300
8000 NRR
CSA
class
2.9 2.6 3.8 2.8
3.2 4 3.8
3.6
5.2
19.4
24.8 33.1 38.8
37.9 40.8
39.5
41.5
38.8
27
Class A
Headband style
Clamping force 11 N
ANSI s3. 19-1974
Frequency,
Hz
Mean
attenuation,
dB
Standard
deviation, dB
125 250 500 1000
2000 3150 4000
6300
8000 NRR
CSA
class
3.4 3.1 3.3 3.3
2.9 2.9 3.8
4.7
4,4
19.4
25.3 28.4 33.1
34.8 39.1
37.4
40.4
36.6
24
Class A
Helmet mounted
Clamping force 2.9 lb
ANSI s3. 19-1974
Frequency,
Hz
Mean
attenuation,
dB
Standard
deviation, dB
14 2146 - 003 -