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Noise Criterion Curves - Mitsubishi Electric PLA-RP-BA Technical Data Manual

Mitsubishi electric split-type, heat pump air conditioners.
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10

NOISE CRITERION CURVES

10-1. INDOOR UNIT
PLA-RP35BA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
125
250
BAND CENTER FREQUENCIES, Hz
PLA-RP60BA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
125
250
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB)
LINE
High
31
Medium1
29
Medium2
28
Low
27
500
1000
2000
4000
8000
NOTCH SPL(dB)
LINE
High
32
Medium1
31
Medium2
29
Low
28
500
1000
2000
4000
8000
PLA-RP50BA
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
125
PLA-RP71BA
PLA-RP71BA2
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
125
111
NOTCH SPL(dB)
High
32
Medium1
31
Medium2
29
Low
28
250
500
1000
2000
4000
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB)
High
34
Medium1
32
Medium2
30
Low
28
250
500
1000
2000
4000
BAND CENTER FREQUENCIES, Hz
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000

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