Panasonic Shows U-26PE1U6 Technical Data & Service Manual page 60

1-8 Noise Criterion Curves
Low Silhouette Duct Type
MODEL : S-26PF1U6
SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18
CONDITION : Under the unit 4.9 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
1
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
1761_U_I
MODEL : S-36PF1U6
SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21
CONDITION : Under the unit 4.9 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
1-54
1. Specifications
NC-50
NC-40
NC-30
NC-20
1762_U_I