Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 156
Wilhelmi acoustic panel – Variantex 09 (1981)
Original description
Wilhelmi acoustic panel Variantex 09 panel absorber
ISO 354 – reverberation chamber· 2 variants
αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| 50 mm | αw0.18 | |
| 300 mm | αw0.17 |
Weight / density: 6 - 7,5 kg / m²
