Four-way Cassette MCAC-VTSM-2017-01
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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)
Sound level under three speeds of fan (dB(A))
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 pressure level dB(0dB=0.0002μ bar)
Audibility limits of
continuous white
sound
Octave band center frequency(Hz)
Sound pressure level dB(0dB=0.0002μ bar)
Audibility limits of
continuous white
sound
1.4m
Four-way cassette type