
Sound Data
57
MAC/M4AC025C/CR, M5AC025CR NC CURVE
0
10
20
30
40
50
60
70
80
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound Pressure level (dB, ref 20µPa)
MAC/M4AC020C/CR, M5AC020CR NC CURVE
0
10
20
30
40
50
60
70
80
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound Pressure level (dB, ref 20µPa)
NC-30
NC-60
NC-40
NC-35
NC-4
NC-50
NC-55
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
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