98
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUZ-HA30NHA2
PUZ-HA36NHA2
COOLING
MODE
HEATING
52
SPL(dB)
53
LINE
5 ft
3.3 ft
MICROPHONE
UNIT
GROUND
DOCS14̲15revA.indd 98
DOCS14̲15revA.indd 98
10.8.25 4:09:51 PM
10.8.25 4:09:51 PM
