34 | ART COOL
TM
MUL
TI V W
all-Mounted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©
LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Figure 17: ARNU123SJR4, ARNU153SJR4, and ARNU183SKR4 Sound Pressure Level Diagrams.
Acoustic Data
Sound Pressure Levels
ART COOL MIRROR
Figure 18: ARNU243SKR4 Sound Pressure Level Diagrams.
ARNU123SJR4
ARNU153SJR4
ARNU183SKR4
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63
125
250
500
1000 2000 4000 8000
O
ct
av
e
Band
S
ound
P
re
ss
ur
e
Le
ve
l (
dB
=
2
0
μ
Pa
)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
High
Middle
Low
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63
125
250
500
1000 2000 4000 8000
O
ct
av
e
Band
S
ound
P
re
ss
ur
e
Le
ve
l (
dB
=
2
0
μ
Pa
)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
High
Middle
Low
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63
125
250
500
1000 2000 4000 8000
O
ct
av
e
Band
S
ound
P
re
ss
ur
e
Le
ve
l (
dB
=
2
0
μ
Pa
)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
High
Middle
Low
ARNU243SKR4
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63
125
250
500
1000 2000 4000 8000
O
ct
av
e
Band
S
ound
P
re
ss
ur
e
Le
ve
l (
dB
=
2
0
μ
Pa
)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
High
Middle
Low
