6
6
.
.
S
S
O
O
U
U
N
N
D
D
P
P
R
R
E
E
S
S
S
S
U
U
R
R
E
E
D
D
A
A
T
T
A
A
62
Model 48K
Test condition 1.0m ahead of the unit; 1.0m high from the bottom of the unit;
Model
60K
Test condition 1.0m ahead of the unit; 1.2m high from the bottom of the unit;
Model
36K(3-Phase)
Test condition
1.0m ahead of the unit; 0.9m high from the bottom of the unit;
1.0m high from the ground
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
NC-70
10
20
30
40
50
60
70
80
90
63 125 250 8k
Total octave band sound level(dB:total sound level C)
500 1k 2k 4k
Octave band center frequency(Hz)