Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
Ecophon Combison Duo A fiberglass absorber with gypsum board
Ecophon – Combison Duo A
PTB reference data
Original description
Ecophon Combison Duo A fiberglass absorber with gypsum board
Material properties
Manufacturer: Ecophon GmbH
Thickness: 2.1 in
Wall distance: 7.9 in
Backing: 0.6 in gypsum board
Surface: treated with Akutex T
Mounting: visible sub-frame made of galvanized steel
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.85
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.60 | 0.95 | 0.95 | 0.95 | 0.95 |
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Value from the PTB table, not verified
NRC: 0.85 (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 |
|---|---|---|---|---|---|---|---|---|
| 54 mm · ca. 14 kg / m² · tKh = 200 mm (totale Konstruktionshöhe) · Deckenelement, hochabsorbierend, schalldämmend, for die Schalldämmung in angrenzenden Räumen at denen die Trennwände nicht bis zu structural ceiling hinaufreichen · Akutex T | 0.85 | 0.15 | 0.40 | 0.60 | 0.95 | 0.95 | 0.95 | 0.95 |
Measured values as a table (1 measurement)
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