Daikin FWW Series Technical Manual page 69

Sound Data
70
60
50
40
30
20
10
0
125
70
60
50
40
30
20
10
0
125
250 500
Octave-band frequency (Hz)
H
M
L
250 500
Octave-band frequency (Hz)
FUD20B
H
M
L
1000 2000
FUD25B
1000 2000
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
4000 8000
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
4000 8000
65