Sound Pressure Levels - Mitsubishi Electric PVA-A30AA4 Service Manual

5

SOUND PRESSURE LEVELS

5-1. Sound pressure level
Ceiling concealed
5-2. NC curves
PVA-A30AA4
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
Approximate minimum
audible limit on
5.0
continuous noise
0.0
63 25 250
5.0
0.0
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
Approximate minimum
audible limit on
5.0
continuous noise
0.0
63 25 250
5.0
0.0
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
Approximate minimum
5.0 audible limit on
continuous noise
0.0 0.0
63 25 250
5.0
ux.duct
Front side
3-1/4ft.
(1m)
Measurement location
ux.duct
External static pressure 0.30 [in.WG] (75Pa)
High Low
Middle
500 k 2k 4k
Octave band center frequencies (Hz)
External static pressure 0.50 [in.WG] ( 25Pa)
High Low
Middle
500 k 2k 4k
Octave band center frequencies (Hz)
External static pressure 0.80 [in.WG] (200Pa)
High Low
Middle
500 k 2k 4k
Octave band center frequencies (Hz)
PVA-A36AA4
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
Approximate minimum
NC-20
audible limit on
5.0
continuous noise
0.0
8k 63 25 250
0.0
5.0
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
Approximate minimum
NC-20
audible limit on
5.0
continuous noise
0.0
8k 63 25 250
5.0
0.0
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
Approximate minimum
NC-20
5.0
audible limit on
continuous noise
0.0 0.0
8k 63 25 250
5.0
10
External static pressure 0.30 [in.WG] (75Pa)
High Low
Middle
500 k 2k 4k
Octave band center frequencies (Hz)
External static pressure 0.50 [in.WG] ( 25Pa)
High Low
Middle
500 k 2k 4k
Octave band center frequencies (Hz)
External static pressure 0.80 [in.WG] (200Pa)
High Low
Middle
500 k 2k 4k
Octave band center frequencies (Hz)
NC-60
NC-50
NC-40
NC-30
NC-20
8k
NC-60
NC-50
NC-40
NC-30
NC-20
8k
NC-60
NC-50
NC-40
NC-30
NC-20
8k