25
9. Sound Data
Indoor Unit
Sound Pressure Level
Unit: dB(A)
1m
1m
Microphone
Model High Mid Low
AC018MNADCH/AA 42 37 32
AC024MNADCH/AA 43 39 35
AC030MNTDCH/AA 49 47 45
AC036MNTDCH/AA 51 48 46
• NC Curve
1) AC018MNADCH/AA 2) AC024MNADCH/AA
High
Low
NC 50
NC 70
NC 60
NC 55
NC 45
NC 40
NC 35
NC 30
NC 25
NC 20
NC 15
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
63 125 250 500 1000 2000 4000 8000
Sound Pressure Level (dB)
Octave Band Center Fr eq uency( Hz)
High
Low
NC 50
NC 70
NC 60
NC 55
NC 45
NC 40
NC 35
NC 30
NC 25
NC 20
NC 15
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
63 125 250 500 1000 2000 4000 8000
Sound Pressure Level (dB)
Octave Band Center Fr eq uency( Hz)
3) AC030MNTDCH/AA 4) AC036MNTDCH/AA
High
Low
NC 50
NC 70
NC 60
NC 55
NC 45
NC 40
NC 35
NC 30
NC 25
NC 20
NC 15
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
63 125 250 500 1000 2000 4000 8000
Sound Pressure Level (dB)
Octave Band Center Fr eq uency( Hz)
High
Low
NC 50
NC 70
NC 60
NC 55
NC 45
NC 40
NC 35
NC 30
NC 25
NC 20
NC 15
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
63 125 250 500 1000 2000 4000 8000
Sound Pressure Level (dB)
Octave Band Center Fr eq uency( Hz)
NOTE
• Specifications may be subject to change without prior notice.
• Sound pressure Level
- Sound pressure level is obtained in an anechoic room.
- Sound pressure level is a relative value, depending on the distance and acoustic environment.
- Sound pressure level may differ depending on operation condition.
- dBA = A weighted sound pressure level
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