Noise Criterion Curves - Sanyo SPW-C483GYH8 Service Manual

3. 2-Way Air Discharge Semi-concealed Type

3-5. Noise criterion curves

MODEL : SPW-S93GH56
SOUND LEVEL : HIGH 32 dB(A), NC 29
LOW 25 dB(A), NC 21
CONDITION : Center, Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
REMARKS : 1. Value obtained in the actual place where the unit is installed may be slightly higher than the values
shown in this graph because of the conditions of operation, the structure of the building, the
background noise and other factors.
2. The test results were obtained from an anechoic room.
To evaluate "Noise level" the maximum number of the measured OCTAVE BAND SOUND PRES-
NOTE
SURE LEVEL is used. Read the number on each BAND CENTER
FREQUENCIES (horizontal axis) ranging from 63 Hz to 8000 Hz and select the maximum value
(vertical axis) among them.
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
0278_S_I
I - 45
ECO MULTI SYSTEM Unit Specifications
MODEL : SPW-S123GH56
SOUND LEVEL : HIGH 33 dB(A), NC 29
LOW 26 dB(A), NC 22
CONDITION : Center, Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
1
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
0279_S_I
SM830052