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NRC & TL
TEST DATA

 



Acoustax Sound Absorptive Aluminum Barrier Panel
  ASTM C423   ASTM E-90 ASTM E-413
Freq
(Hz)		 Absorption
Coefficient		 NRC Freq
(Hz)
 Specimen
TL
(dB)		 No. of
Deficiencies
50 0.08        
63 0.15
80 0.14 80 16.4 0
100 0.30 100 18.4 0
125 0.45 125 20.3 4
160 0.70 160 22.4 6
200 0.89 200 24.4 5
250 1.03 1.030 250 26.3 6
315 1.07   315 28.3 4
400 1.04 400 30.4 5
500 1.13 1.130 500 32.3 1
630 1.05   630 34.4 0
800 1.01 800 36.4 0
1000 1.02 1.020 1000 38.4 0
1250 1.02   1250 40.3 0
1600 0.98 1600 42.4 0
2000 1.00 1.000 2000 44.4 0
2500 0.94   2500 46.3 0
3150 0.88 3150 48.3 0
4000 0.84 4000 50.4 0
5000 0.84 5000 52.3 0
6300 0.84      
8000 0.76
Exact NRC Rating
1.045
Exact SAA Rating 1.015
NRC Rating 1.05
SAA Rating 1.00
34
 STC
(Sound Transmission Class)
32 Sum of Deficiencies versus contour curve


 
 
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