Specifications

43
Sound Data
Overall Noise
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz (dBA) Criteria
MRT055A/AR 73 72 65 62 58 52 44 68 66
M(4)RT060A/AR 67 61 59 60 55 49 42 63 59
M(4)RT080A/AR 68 65 64 62 54 49 39 65 61
M(4)RT100A/AR 69 67 64 60 56 51 42 66 58
M(4)RT120A/AR 68 64 62 65 60 53 45 68 64
M(4)RT150A/AR 74 68 68 67 60 53 44 70 66
M(4)RT200A/AR 74 69 67 66 60 52 43 70 65
M(4)RT250A/AR 76 72 70 71 65 55 46 74 70*
M(4)RT300A/AR 77 72 71 72 65 55 46 74 71*
M(4)RT360A/AR 67 74 74 75 76 69 60 80 > 70*
M(4)RT420A/AR 72 76 76 75 75 69 58 80 > 70*
Model
1/1 Octave Sound Pressure Level (dB, ref 20 µPa)
* THE DATA DOES NOT APPLY TO INDOOR NOISE CRITERION.
Note:
1. MRT055A/AR, M(4)RT080A/AR, M(4)RT100A/AR, M(4)RT150A/AR and M(4)RT200A/AR
- Microphone position: 1 m in front of the unit and 1 m above the floor.
2. M(4)RT060A/AR, M(4)RT120A/AR, M(4)RT250A/AR, M(4)RT300A/AR, M(4)RT360A/AR, and M(4)RT420A/AR
- Microphone position: 1 m from the service panel and 1 m height from the floor level.
MRT055A/AR NC CURVES
10
20
30
40
50
60
70
80
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound pressure level (dB, ref 20µPa)
NC70
NC45
NC50
NC55
NC60
NC65
NC20
NC25
NC30
NC35
NC40