Mitsubishi Electric S Series Manual page 19

S series
B.1.7 NOISE CRITERION CURVES
SLZ-KA25VAL
SLZ-KA25VA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SLZ-KA50VAL
SLZ-KA50VA
90
80
70
60
50
40
30
20 APPROXIMATE
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 high-
er by about 2 dB than the indicated level during cooling and heating operation.
<50Hz>
SPL(dB) LINE
NOTCH
High 37
Medium
31
Low
28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
<50Hz>
NOTCH SPL(dB) LINE
High 39
Medium 34
Low 30
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SLZ-KA35VAL
SLZ-KA35VA
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
CEILING CASSETTE
<50Hz>
SPL(dB) LINE
NOTCH
High 38
Medium
33
Low
29
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
1.5m
B-19