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H
© FANTECH
2016
NOISE CONTROL PRODUCTS
Model
63 125 250 500 1k
2k
4k
8k
7
11
12
10
10
9
4
7
9
13
14
12
12
8
SBL1
ACOUSTIC PERFORMANCE
Static Insertion Loss, dB
Octave Band Centre Frequency (Hz)
STL
STL
NR
NR
10
13
15
19
20
18
18
14
9
17
18
16
16
15
ASB
SBL2
STL
NR
General
HVAC
13
3
7
1
5
10
14
22
27
25
21
17
11
16
20
28
33
31
27
23
5.8
8.6
-
-
12.7
-
9.8
11.9
-
-
19.9
-
Note: For SBL2 pressure losses, multiply SBL1 losses by 1.03.
For reverse air flow on SBL1 & SBL2 models, multiply pressure loss by 1.3.
For ASB models, pressure loss is the same for both air flow directions.
NR - Noise reduction STL - Sound transmission loss
Low
Frequency
dB(A) Reduction*
* See ‘Attenuator Selection Procedure’ on page H2/3 for further information on dB(A) reduction.
PRESSURE DROP GRAPH
Refer to the ‘General Acoustic Information Section’ for further detail on NR and STL rating.
Note: the internal design for the ASB
is different to what is shown above. However,
the mounting arrangement is the same.
MOUNTING ARRANGEMENTS
SOUND BAR LOUVRES
H-14