WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 251
Ernst Schmelze Eco-Modulator unslotted panel absorber
Eco-Modulator – unslotted
PTB reference data
Original description
Ernst Schmelze Eco-Modulator unslotted panel absorber
Material properties
Manufacturer: Ernst Schmelze KG
Thickness: 20 mm
Wall distance: 50 mm, 200 mm
Backing: mineral fiber mat
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.22
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.25 | 0.10 | 0.05 | 0.10 | 0.15 |
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| Compare | Value | |
|---|---|---|
| 50 mm | αw0.22 | |
| 200 mm | αw0.22 |
Weight / density: 3,5 - 3,7 kg /m²
Dimensions: bis 3000 x 850 mm