Heraklith Herakustik HAK G wood wool acoustic panel
Herakustik, HAK G
NRC 0.60–0.95
PTB reference data
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WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 87
Value from the PTB table, not verified
Original description
Heraklith Herakustik HAK G wood wool acoustic panel
Material properties
Manufacturer: Deutsche Heraklith GmbH
Thickness: 2 in
Wall distance: 11 in, 2 in, 0 in
Backing: 1.6 in mineral wool
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 3 variants
NRC
0.95
Frequency values
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| Compare | Value | |
|---|---|---|
| 11 in with 1.6 in Mineralwollhinterfütterung | NRC0.95 | |
| 2 in | NRC0.65 | |
| 0 | NRC0.60 |
NRC: 0.95 (derived from ISO 354 lab data)
Weight / density: 20.5 kg / m²
Dimensions: 79, 39, 20 in x 20 in
Measured values as a table (3 measurements)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 in · 20.5 kg / m² · 11 in with 1.6 in Mineralwollhinterfütterung | 0.95 | 0.25 | 0.45 | 0.70 | 0.75 | 0.87 | 0.95 | 0.97 | 1.02 | 1.00 | 0.90 | 0.85 | 0.83 | 0.95 | 1.00 | 1.00 | 0.95 | 1.00 | 1.03 |
| 2 in · 20.5 kg / m² · 2 in | 0.65 | 0.08 | 0.14 | 0.16 | 0.20 | 0.40 | 0.55 | 0.82 | 0.80 | 0.75 | 0.58 | 0.53 | 0.58 | 0.70 | 0.86 | 0.84 | 0.86 | 0.88 | 0.95 |
| 2 in · 20.5 kg / m² · 0 | 0.60 | 0.05 | 0.07 | 0.12 | 0.10 | 0.22 | 0.25 | 0.45 | 0.57 | 0.80 | 1.00 | 0.90 | 0.70 | 0.60 | 0.65 | 0.80 | 0.88 | 0.86 | 0.88 |
Measured values as a table (3 measurements)
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