Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
Ecophon Sombra A glass wool acoustic ceiling tile
Ecophon – Sombra A
PTB reference data
Original description
Ecophon Sombra A glass wool acoustic ceiling tile
Material properties
Manufacturer: Ecophon GmbH
Thickness: 20 mm, 40 mm
Wall distance: 50 mm, 200 mm
Backing: non-woven
Surface: matte black dyed non-woven
Application: ceiling
Mounting: visible suspended grid made of galvanized steel
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 4 variants
αw
1.00
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.95 | 1.00 | 1.00 | 1.00 | 1.00 |
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| Compare | Value | ||
|---|---|---|---|
| 40 mm | tKh = 200 mm (totale Konstruktionshöhe) | αw1.00 | |
| 20 mm | tKh = 200 mm (totale Konstruktionshöhe) | αw0.95 | |
| 40 mm | tKh = 50 mm (totale Konstruktionshöhe) | αw0.90 | |
| 20 mm | tKh = 50 mm (totale Konstruktionshöhe) | αw0.65 |
Weight / density: 3 kg / m²
Dimensions: 600 x 600 mm, 625 x 625 mm, 1200 x 600 mm, 1250 x 625 mm
Application: Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos
Measured values as a table (4 measurements)
| Build-up | αw | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|---|
| 20 mm · 3 kg / m² · tKh = 50 mm (totale Konstruktionshöhe) · Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos · mattschwarzes fleece | 0.65 | 0.05 | 0.15 | 0.35 | 0.75 | 1.00 | 1.00 | 0.95 |
| 20 mm · 3 kg / m² · tKh = 200 mm (totale Konstruktionshöhe) · Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos · mattschwarzes fleece | 0.95 | 0.15 | 0.45 | 0.89 | 1.00 | 0.85 | 0.95 | 0.95 |
| 40 mm · 3 kg / m² · tKh = 50 mm (totale Konstruktionshöhe) · Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos · mattschwarzes fleece | 0.90 | – | 0.15 | 0.60 | 1.00 | 1.00 | 1.00 | 1.00 |
| 40 mm · 3 kg / m² · tKh = 200 mm (totale Konstruktionshöhe) · Deckenplatten with geringem Lichtreflexionsgrad, z.B. for Kinos · mattschwarzes fleece | 1.00 | 0.15 | 0.50 | 0.95 | 1.00 | 1.00 | 1.00 | 1.00 |
Measured values as a table (4 measurements)
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