Mineral woolLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
Ecophon Master F glass wool panel
Ecophon – Master F, gamma
PTB reference data
Original description
Ecophon Master F glass wool panel
Material properties
Manufacturer: Ecophon GmbH
Thickness: 1.6 in
Wall distance: 1.6 in
Backing: non-woven faced
Surface: smooth surface structure
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.30
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.45 | 0.45 | 0.20 | 0.15 | 0.05 |
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Value from the PTB table, not verified
NRC: 0.30 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|---|
| 40 mm · ca. 5 kg / m² · tKh = 40 mm (totale Konstruktionshöhe) · Deckenelement, Befestigung direkt on Unterlage, diskreter Plattenstoß, for Schulen and überall dort, wo die Anforderungen an eine gute Sprachverständlichkeit besonders hoch sind | 0.30 | 0.05 | 0.40 | 0.45 | 0.45 | 0.20 | 0.15 | 0.05 |
Measured values as a table (1 measurement)
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