
9
1/1 Octave A-weighed sound pressure level (dBA), ref 20µPa
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz Ave.Model
H M L H M L H M L H M L H M L H M L H M L H M L
ACK20A/AR
46 44 43 45 43 42 40 37 35 38 33 31 32 28 26 21 18 17 14 12 11 42 39 37
ACK25A/AR
48 45 43 46 43 42 43 40 38 39 35 32 33 29 27 27 21 19 19 15 14 45 42 40
ACK30A/AR
50 48 46 48 45 43 47 43 41 43 38 35 37 32 30 35 31 30 28 27 26 49 45 43
ACK40A/AR
50 48 46 49 47 45 49 47 46 46 43 41 39 36 34 38 34 30 31 25 23 51 48 46
ACK50A/AR
54 52 51 52 50 49 51 50 49 48 46 45 43 41 39 42 40 39 34 32 31 53 52 50
Model Measuring location
ACK20A/AR
ACK25A/AR
Standard : JIS C 9612
ACK30A/AR
ACK40A/AR
ACK50A/AR
Standard : JIS B 8615
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