FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerunterlagen 1991
illsonic pyramide flexible PU foam panel with pyramid structure
illsonic pyramide
PTB reference data
Original description
illsonic pyramide flexible PU foam panel with pyramid structure
Material properties
Manufacturer: illbruck GmbH
Thickness: 70 mm, 100 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.82
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.50 | 1.00 | 1.05 | 1.05 | 1.10 |
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| Compare | Value | |
|---|---|---|
| 100 mm | αw0.82 | |
| 70 mm | αw0.72 |
Weight / density: 28 kg/m^3
Dimensions: 1000 mm x 1000 mm
