2C REACT, EN 352, H-33 M-26 L-19 SNR-29
Freq.Hz 63 125 250 500 1000 2000 3150 4000 6300 8000
Mean.att. 21,0 18,4 21,1 27,7 36,9 36,1 42,1 38,8
St.dev. 6,3 4,5 4,2 3,5 4,0 3,6 3,5 5,4
APV 14,7 13,9 16,9 24,2 32,9 32,5 38,6 33,4
S1H
2C REACT, ANSI S-3.19-1974, NRR 23 CSA A
Freq.Hz 63 125 250 500 1000 2000 3150 4000 6300 8000
Mean.att. 17.4 19.5 27.3 32.6 34.0 36.6 39.3 42.5 40.1
St.dev. 3.5 2.4 3.1 3.5 2.7 3.5 3.4 4.1 4.7
S1H
2C REACT, AS/NZS 1270:2002, SLC(80)-26 dB Class 5
Freq.Hz 63 125 250 500 1000 2000 3150 4000 6300 8000
Mean.att. 16.5 16.7 23.7 30.0 33.6 37.2 38.0
St.dev. 4.6 3.7 4.4 3.9 3.0 4.7 4.9
Mean-std 11.9 13.0 19.3 26.1 30.6 32.5 33.1