WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 152
Wilhelmi Mikropor S acoustic panel with acoustic non-woven
Wilhelmi acoustic panel – Mikropor S (1981)
PTB reference data
Original description
Wilhelmi Mikropor S acoustic panel with acoustic non-woven
Material properties
Manufacturer: Wilhelmi Werke AG
Thickness: approx. 18 mm
Wall distance: 50 mm, 300 mm
Backing: acoustic non-woven
Surface: fine-pored special lacquer
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.53
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.30 | 0.50 | 0.75 | 0.60 | 0.55 |
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| Compare | Value | |
|---|---|---|
| 300 mm | αw0.53 | |
| 50 mm | αw0.50 |
Weight / density: 6 - 7 kg / m²