Technical Data Downow Units X Type
Noise Data
Sound Frequency (Hz) dB
Measurement
Overall
dB(A)
63 125 250 500 1000 2000 4000 8000
DF6X
Discharge Air Power 71 65 69 67 67 67 66 58 54
Return Air Power 62 68 68 66 59 54 51 49 39
Case Breakout Power 58 64 66 58 55 52 47 44 38
Sound @ 3m Pressure 43 50 51 43 40 37 33 29 24
DF8X
Discharge Air Power 77 70 74 73 72 72 71 64 59
Return Air Power 68 73 74 72 65 59 56 54 44
Case Breakout Power 63 70 71 63 60 56 53 50 43
Sound @ 3m Pressure 48 55 57 49 45 42 38 36 29
DF10X
Discharge Air Power 80 73 77 76 75 75 74 67 62
Return Air Power 71 76 77 75 68 62 59 57 47
Case Breakout Power 66 73 74 66 63 59 55 53 47
Sound @ 3m Pressure 51 58 60 52 48 45 41 38 32
DF13X
Discharge Air Power 77 71 74 72 72 72 71 64 59
Return Air Power 67 73 74 72 65 59 56 54 44
Case Breakout Power 63 70 71 63 60 56 52 50 44
Sound @ 3m Pressure 48 56 57 49 45 42 38 36 30
DF15X
Discharge Air Power 73 70 75 72 69 68 67 62 57
Return Air Power 66 73 74 71 62 55 52 53 42
Case Breakout Power 62 70 72 63 57 54 49 51 44
Sound @ 3m Pressure 47 55 57 49 43 39 34 36 29
DF17X
Discharge Air Power 77 74 78 76 73 72 70 66 61
Return Air Power 70 77 78 75 66 59 55 56 46
Case Breakout Power 65 73 76 67 61 57 52 53 46
Sound @ 3m Pressure 50 59 61 52 46 43 38 39 31
DF20X2
Discharge Air Power 81 74 78 77 76 77 75 68 63
Return Air Power 72 77 78 76 69 63 60 59 48
Case Breakout Power 67 74 76 68 64 61 56 54 48
Sound @ 3m Pressure 52 59 61 53 49 46 42 40 34
DF22X2
Discharge Air Power 85 79 83 81 80 81 79 72 67
Return Air Power 76 81 82 80 73 67 64 63 52
Case Breakout Power 71 78 80 72 68 65 60 58 52
Sound @ 3m Pressure 56 64 65 57 54 50 46 43 37
DF26X2
Discharge Air Power 85 79 83 81 80 81 79 72 67
Return Air Power 76 81 82 80 73 67 64 63 52
Case Breakout Power 71 78
80 72 68 65 60 58 52
Sound @ 3m Pressure 56 64 65 57 54 50 46 43 37
DF28X
Discharge Air Power 87 77 80 79 81 81 82 79 76
Return Air Power 68 77 71 63 66 63 58 56 47
Case Breakout Power 70 80 70 63 67 67 60 57 48
Sound @ 3m Pressure 55 65 56 49 53 52 45 42 34