Sound Levels - Sinclair SDV 5 Series Service Manual

8 Sound Levels

8.1 Overall
Table 8.1: One-way Cassette sound pressure levels
Model name
SSH
SDV5-18C1A 37
SDV5-22C1A 37
SDV5-28C1A 39
SDV5-36C1A 39
SDV5-45C1A 41
SDV5-56C1A 42
SDV5-71C1A 44
Notes:
1. Sound pressure levels are measured 1.4m below the unit in a
semi-anechoic chamber. During in-situ operation, sound pressure
levels may be higher as a result of ambient noise.
8.2 Octave Band Levels
Figure 8.2: SDV5-18,22C1A octave band levels
80
70
60
50
SSH
SH
40
H
M
L
SL
30
SSL
20
10
0
63 125
Octave band center frequency (Hz)
Figure 8.4: SDV5-45C1A octave band levels
80
70
60
50
SSH
SH
40
H
M
L
SL
30
SSL
20
10
0
63 125
Octave band center frequency (Hz)
22
1
Sound pressure levels dB(A)
SH H M L SL
36 35 34 32 31
36 35 34 32 31
38 37 36 35 35
38 37 36 35 35
40 39 38 37 36
41 40 39 38 37
43 42 41 39 38
250 500 1000 2000 4000 8000
250 500 1000 2000 4000 8000
Figure 8.1: One-way Cassette sound pressure level measurement
SSL
30
30
34
34
35
36
37
Figure 8.3: SDV5-28,36C1A octave band levels
80
70
NC65
60
NC60
NC55
50
NC50
SSH
SH
NC45
40
H
M
NC40
L
SL
NC35
30
SSL
NC30
NC25
20
NC20
10
NC15
0
63
Figure 8.5: SDV5-56C1A octave band levels
80
70
NC65
60
NC60
NC55
50
SSH
NC50
SH
H
NC45
40
M
L
NC40
SL
NC35 SSL
30
NC30
NC25
20
NC20
NC15
10
0
63
1.4m
125 250 500 1000 2000 4000 8000
Octave band center frequency (Hz)
125 250 500 1000 2000 4000 8000
Octave band center frequency (Hz)
NC65
NC60
NC55
NC50
NC45
NC40
NC35
NC30
NC25
NC20
NC15
NC65
NC60
NC55
NC50
NC45
NC40
NC35
NC30
NC25
NC20
NC15
201711