GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 205
Knauf Perlgips-Kassette perforated 4520 07-08, 8/12 mm holes, 10.5%
Perlgips-Kassette perforated – 4520 07-08 perforation 8/12/36
PTB reference data
Original description
Knauf Perlgips-Kassette perforated 4520 07-08, 8/12 mm holes, 10.5%
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 9.5 mm
Wall distance: 53 mm, 500 mm
Perforation: 10.5%
Hole size: 8 mm, 12 mm
Backing: Paratex non-woven and 20 mm mineral fiber blanket
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.61
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.75 | 0.65 | 0.65 | 0.65 | 0.50 | 0.25 |
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| Compare | Value | |
|---|---|---|
| 500 mm | αw0.61 | |
| 53 mm | αw0.54 |
Dimensions: 625 x 625 mm
