Mitsubishi Electric PLA-A12EA8 Service Manual page 11

PLA-A36EA8
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
TCH120A
NOTCH SPL(dB) LINE
High 44
Medium1 41
Medium2 37
Low 32
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
CEILING
MICROPHONE
11 11
PLA-A42EA8
PLA-A48EA8
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
MAIN UNIT
5 ft
NOTCH SPL(dB)
High 45
Medium1 42
Medium2 38
Low 34
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000