Johnson Controls JA Series, Engineering Manual

Page: 42 / 249

8
7
6
5
4
3
2
MODEL :
J
XHX1252
N
,
J
XHX185
2N
SOUND LEVEL : 31 dB(A)
LOW
HIGH
27 dB(A)
29 dB(A)
CONDITION :
MODEL :
J
XHX245
2N
SOUND LEVEL : 34 dB(A)
28 dB(A)
31 dB(A)
CONDITION :
MODEL :
J
XHX365
2N
SOUND LEVEL : 39 dB(A)
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
STRONG
60Hz
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Overall
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Approximate
minimum audible
limit for
continuous noise
4.9 ft directly below unit
o
o
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Frequency at center of sound pressure band (Hz)
Overall
Approximate
minimum audible
limit for
continuous noise
LOW
HIGH
STRONG
4.9 ft directly below unit
LOW
HIGH
STRONG
4.9 ft directly below unit
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Approximate
minimum audible
limit for
continuous noise
Overall
Approximate
minimum audible
limit for
continuous noise
Approximate
minimum audible
limit for
continuous noise
MODEL :
:
:
J
XMHX125
2N
SOUND LEVEL 32 dB(A)
WEAK 26 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
STRONG
Frequency at center of sound pressure band (Hz)
Overall
Sound pressure le
v
el (dB)
(0dB = 0.0002μbar)
4.9 ft directly below unit
4000 63 125 250 8000 2000 1000 500
Frequency at center of sound pressure band (Hz)
Overall
MODEL :
:
:
J
XMHX185
2N
SOUND LEVEL 41 dB(A)
WEAK 33 dB(A)
CONDITION
STRONG
4.9 ft directly below unit
NC-20
NC-30
NC-40
NC-50
60
50
40
30
20
10
Sound pressure le
v
el (dB)
(0dB = 0.0002μbar)
TD831149-00̲3WAY.indb 32 2010/01/26 15:11:06
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
JOHNSON CONTROLS 42
Noise Criterion Curves
4-Way Air Discharge Ceiling Semi-Concealed, Standard and Mini (JX, JXM Types)