PLA-RP125EA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
125
250
500
BAND CENTER FREQUENCIES, Hz
CEILING
MICROPHONE
OCH626A
NOTCH SPL(dB)
LINE
44
Medium1
41
Medium2
37
Low
33
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000
2000
4000
8000
MAIN UNIT
1.5 m
PLA-RP140EA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
125
13
NOTCH SPL(dB)
44
Medium1
42
Medium2
39
Low
36
250
500
1000
2000
4000
BAND CENTER FREQUENCIES, Hz
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000