Panasonic U-26PE1U6 Technical Data & Service Manual page 82

1-8. Noise Criterion Curves
4-Way Cassette (Type U1)
MODEL : S-26PU1U6
SOUND LEVEL : HIGH 38 dB(A), NC 31
: 4.9 ft. directly below unit
CONDITION
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
1
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
MODEL : S-42PU1U6
SOUND LEVEL : HIGH 45 dB(A), NC 38
: 4.9 ft. directly below unit
CONDITION
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
LOW 31 dB(A), NC 23
NC-50
NC-40
NC-30
NC-20
250 500 1000 2000 4000 8000
LOW 34 dB(A), NC 27
250 500 1000 2000 4000 8000
MODEL : S-36PU1U6
SOUND LEVEL : HIGH 44 dB(A), NC 37
: 4.9 ft. directly below unit
CONDITION
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
2108_X_I
NC-50
NC-40
NC-30
NC-20
2110_X_I
1-74
1. Specifications
LOW 33 dB(A), NC 25
250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
2109_X_I