Hisense AMW2-18U4RJC Technical & Service Manual page 65

5. SOUND PRESSURE DATA
Model 42K
90
80
70
60
50
40
30
20
10
63 125 250
Octave band center frequency(Hz)
Test condition Outdoor:
500 1k 2k 4k 8k
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC -15
Test condition Duct:
59