Four-way Cassette MCAC-VTSM-2017-01
77
9. Sound Levels
9.1 Test condition
Note:
1, During actual operation, these values are normally somewhat higher as a result of ambient conditions.
2, Semi-anechoic chamber conversion value, measured at a point which is 1.4m under the unit.
9.2 Test data (Sound Pressure Levels)
Model
Sound level under three speeds of fan (dB(A))
H
M
L
MDV-D28Q4/N1-D
42
38
35
MDV-D36Q4/N1-D
42
38
35
MDV-D45Q4/N1-D
42
38
35
MDV-D56Q4/N1-D
42
38
35
MDV-D71Q4/N1-D
45
42
39
MDV-D80Q4/N1-D
45
42
39
MDV-D90Q4/N1-D
48
45
43
MDV-D100Q4/N1-D
48
45
43
MDV-D112Q4/N1-D
48
45
43
MDV-D140Q4/N1-D
50
47
44
9.3 Octave Band Level
MDV-D28(36,45,56) Q4/N1-D MDV-D71(80) Q4/N1-D
Octave band center frequency
（
Hz
）
Sound pr
es
sure
l
evel
d
B
（
0d
B=0
.000
2
μ
bar
）
Audibility limits of
continuous white
sound
Octave band center frequency
（
Hz
）
Sound
pre
ssure
l
e
ve
l
dB
（
0dB
=0.
00
02
μ
ba
r
）
Audibility limits of
continuous white
sound
1.4m
Four-way cassette type
