Noise Criterion Curves - Mitsubishi Electric SLZ-KA09NA Technical & Service Manual

NOISE CRITERION CURVES

SLZ-KA09NA.TH
SLZ-KA09NAR1.TH
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SLZ-KA15NA.TH
SLZ-KA15NAR1.TH
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than the indicated level in actual use due to surrounding echoes. The sound level can be higher
by about 2 dB than the indicated level during cooling and heating operation.
OCH487B
<60Hz>
NOTCH SPL(dB) LINE
High 38
Medium
22
Low 29
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
<60Hz>
NOTCH SPL(dB) LINE
High 40
Medium 35
Low
31
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SLZ-KA12NA.TH
SLZ-KA12NAR1.TH
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
6
<60Hz>
NOTCH SPL(dB) LINE
High 39
Medium
40
Low 30
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
5 ft