Mitsubishi Electric PLA-RP·BA Technical Data Book page 74

PLA-RP125BA
PLA-RP125BA2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
CEILING
MICROPHONE
NOTCH SPL(dB) LINE
High 41
Medium1 39
Medium2 36
Low 34
500 1000 2000 4000 8000
UNIT
1.5m
PLA-RP140BA2
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63
74
NOTCH SPL(dB)
High
Medium1
Medium2
Low
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
LINE
44
42
39
36
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000