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rpg variscreen acoustic screenrpg variscreen acoustic screenrpg variscreen acoustic screenrpg variscreen acoustic screenrpg variscreen acoustic screen


RPG FlutterFree Absorption Coefficients
Using standard non-slotted Flutterfree Strips




The absorption coefficient data is for non-slotted FlutterFree in a Hemlholtz mounting. Surface mount refers to a C mounting with fiberglass on the boundary. The Cavity mount refers to a D mounting with a cavity depth of (89 mm). The spacing between FlutterFree strips is 1.6mm with a fractional open area of 0.015

Mount:SurfaceCavity
Slot Width1.6mm1.6mm
FlutterFree Width25mm25mm
FlutterFree Thickness25mm25mm
Backing25mm acoustic mineral wool25mm acoustic mineral wool
Cavity Depth089mm
Total Thickness50mm140mm
HzAbsorption Coefficient
1000.190.51
1250.340.76
1600.440.58
2000.750.52
2500.690.4
3150.470.31
4000.370.28
5000.260.23
6300.220.21
8000.150.16
10000.120.16
12500.110.15
16000.110.15
20000.140.18
25000.220.24
31500.170.21
40000.160.22
50000.150.18


All information contained in these details is given in good faith but without warranty.
Custom Audio Designs reserves the right to alter the specifications of any product without notice.
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