4-73
W-3WAY ECO-i SYSTEM Unit Specifi cations
1
2
3
4
5
6
7
8
MODEL
: THX1252
SOUND LEVEL :
35 dB(A)
LOW
HIGH
30 dB(A)
32 dB(A)
CONDITION
:
MODEL
: THX1852
SOUND LEVEL :
36 dB(A)
LOW
HIGH
30 dB(A)
33 dB(A)
CONDITION
:
MODEL
: THX2452
SOUND LEVEL :
38 dB(A)
LOW
HIGH
33 dB(A)
36 dB(A)
CONDITION
:
NC-20
NC-30
NC-40
NC-50
4000
63
125
250
8000
2000
1000
500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
4000
63
125
250
8000
2000
1000
500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
4000
63
125
250
8000
2000
1000
500
60
50
40
30
20
10
Strong
Weak
60Hz
STRONG
STRONG
STRONG
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Overall
Sound pressure le
vel (dB)
(0dB = 0.0002
µbar)
Approximate
minimum audible
limit for
continuous noise
Overall
Sound pressure le
vel (dB)
(0dB = 0.0002
µbar)
Approximate
minimum audible
limit for
continuous noise
Overall
Sound pressure le
vel (dB)
(0dB = 0.0002
µbar)
Approximate
minimum audible
limit for
continuous noise
3.3 ft from front of outlet at height of 4.9 ft
3.3 ft from front of outlet at height of 4.9 ft
3.3 ft from front of outlet at height of 4.9 ft
6-4. Noise Criterion Curves
6. Ceiling-Mounted Type (T Type)
TD831139̲Sec4̲p66-89.indd 73
TD831139̲Sec4̲p66-89.indd 73
2008/04/09 19:22:49
2008/04/09 19:22:49