Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
Ecophon Sombra D glass wool acoustic ceiling tile
Ecophon – Sombra D
PTB reference data
Original description
Ecophon Sombra D glass wool acoustic ceiling tile
Material properties
Manufacturer: Ecophon GmbH
Thickness: 0.8 in
Wall distance: 2 in, 7.9 in
Backing: non-woven
Surface: matte black dyed non-woven
Application: ceiling
Mounting: concealed sub-frame made of galvanized steel
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.90
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.80 | 0.90 | 0.85 | 0.95 | 0.95 |
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| Compare | Value | |
|---|---|---|
| tKh = 7.9 in (totale Konstruktionshöhe) | NRC0.90 | |
| tKh = 2 in (totale Konstruktionshöhe) | NRC0.85 |
NRC: 0.90 (derived from ISO 354 lab data)
Weight / density: 4 kg / m²
Dimensions: 600 x 24 in, 625 x 25 in, 1200 x 24 in, 1250 x 25 in
Application: Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos
Measured values as a table (2 measurements)
| Build-up | NRC | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|---|
| 20 mm · 4 kg / m² · tKh = 50 mm (totale Konstruktionshöhe) · Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos · mattschwarzes fleece | 0.85 | 0.05 | 0.15 | 0.50 | 0.85 | 1.00 | 1.00 | 0.95 |
| 20 mm · 4 kg / m² · tKh = 200 mm (totale Konstruktionshöhe) · Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos · mattschwarzes fleece | 0.90 | 0.15 | 0.55 | 0.80 | 0.90 | 0.85 | 0.95 | 0.95 |
Measured values as a table (2 measurements)
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