LG MULTI F Engineering Manual page 70

STANDARD WALL-MOUNTED INDOOR UNITS
Acoustic Data
Figure 77:LMN157HVT, LSN180HSV4, and LMN247HVT Sound Pressure Level Diagrams.
LMN077HVT LMN157HVT LSN120HSV4
80
80
80
70
70
70
NC-65
65
60
60
60
NC-60
60
55 NC-55
50
50
50
50
NC-50
45
NC-45
40
40
40
40
NC-40
35
NC-35
30
30
30
30
NC-30
25
20
20
NC-25
20
Approximate
Approximate
20
Hearing
Approximate
Hearing
NC-20
Threshold
Hearing Threshold
15
Threshold
10
10
NC-15
63 125 250 500 1000
10 63 125 250
8000 63 125 250
Octave Band Center Frequency (Hz)
Octave Band Center Frequency (Hz)
Octave Band Center Frequency (Hz)
70 | STD. WALL-MOUNTED
80
70
NC-65
NC-65
NC-65
60
NC-60
NC-60
NC-60
NC-55
NC-55
NC-55
50
NC-50
NC-50
NC-50
NC-45
NC-45
NC-45
40
NC-40
NC-40
NC-40
NC-35
NC-35
NC-35
30
NC-30
NC-30
NC-30
NC-25
NC-25
20
NC-25
Approximate
NC-20
NC-20
Hearing
NC-20
Threshold
NC-15
NC-15
10
NC-15
2000 4000 8000
500 1000 2000 4000 8000
500 1000 2000 4000 8000
Due to our policy of continuous product innovation, some specifications may change without notification.
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LMN157HVT LSN180HSV4 LMN247HVT
80
80
70
70
60 60
50
50
40
40
30
30
20
20
Approximat e
Hearing
Approximate
Threshold
Hearing
10 Threshold
10
63 125 250 500 1000
63 125 250 500 1000 2000 4000
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
Octave Band Center Frequency (Hz)
Octave Band Center Frequency (Hz)
80
70
NC-65
NC-65 NC-65
60
NC-60
NC-60
NC-60
NC-55
NC-55
NC-55
50
NC-50
NC-50
NC-50
NC-45
NC-45
NC-45
40
NC-40
NC-40
NC-40
NC-35
NC-35
30
NC-35
NC-30
NC-30
NC-30
NC-25
NC-25
20
NC-25
Approximat e
NC-20
NC-20
Hearing
NC-20
Threshold
NC-15
NC-15
10
NC-15
2000 4000 8000 63 125
8000
Octave Band Center Frequency (Hz)
F
MULTI
F
MULTI MAX
LMN247HVT
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
250 500 1000 2000 4000 8000