Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 193
Perllit acoustic panel – No. 72
Original description
Knauf Perllit acoustic panel No. 72, grooved, square-hole perforation, 11.4%
ISO 354 – reverberation chamber· 2 variants
αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| 500 mm | αw0.63 | |
| 50 mm | αw0.52 |
Weight / density: ca. 18 kg / m²
Dimensions: 625 x 625 mm
