5. SOUND LEVELS
YKB/YLM 2nd
1 - 144
PLFY-VC
M/VBM
MEE15K022
5. SOUND LEVELS
5-1. Sound levels
5-2. NC curves
* Measured in anechoic room.
PLFY-P-VCM-E2, VBM-E
1.5m
Measurement location
PLFY-P15VCM-E2
PLFY-P20VCM-E2
PLFY-P25VCM-E2
PLFY-P32VCM-E2
PLFY-P40VCM-E2
28-30-31
28-31-35
28-31-37
29-33-38
30-34-39
Sound level dB (A)
Sound level at anechoic room : Low-Mid-High
PLFY-P20VBM-E
PLFY-P25VBM-E
PLFY-P32VBM-E
PLFY-P40VBM-E
PLFY-P50VBM-E
PLFY-P63VBM-E
PLFY-P80VBM-E
PLFY-P100VBM-E
PLFY-P125VBM-E
27-28-29-31
27-28-30-31
28-29-30-32
30-32-35-37
34-37-39-41
35-38-41-43
Sound level dB (A)
Sound level at anechoic room : Low-Mid2-Mid1-High
PLFY-P20VCM-E2
External static pressure : 0Pa
Power source : 220,230,240V
, 50Hz
PLFY-P25VCM-E2
External static pressure : 0Pa
Power source : 220,230,240V
, 50Hz
PLFY-P32VCM-E2
External static pressure : 0Pa
Power source : 220,230,240V
, 50Hz
PLFY-P40VCM-E2
External static pressure : 0Pa
Power source : 220,230,240V
, 50Hz
OCTAVE BAND CENTER FREQUENCIES(Hz)
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20μPa
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
Approximate minimum
audible limit on
continuous noise
High
Middle
Low
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
Approximate minimum
audible limit on
continuous noise
OCTAVE BAND CENTER FREQUENCIES(Hz)
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20μPa
High
Middle
Low
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
Approximate minimum
audible limit on
continuous noise
OCTAVE BAND CENTER FREQUENCIES(Hz)
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20μPa
High
Middle
Low
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
Approximate minimum
audible limit on
continuous noise
OCTAVE BAND CENTER FREQUENCIES(Hz)
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20μPa
High
Middle
Low
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63
125
250
500
1k
2k
4k
8k
NC-60
NC-50
Octave band pressure level (dB) 0dB=20μPa
Approximate minimum
audible limit on
continuous noise
NC-40
NC-30
NC-20
Octave band center frequencies (Hz)
High
Middle
50Hz
Low
50Hz
50Hz
PLFY-P15VCM-E2
External Static Pressure: 0Pa
Power Source: 220,230,240V, 50Hz
