Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
Ecophon Focus C glass wool panel with Akutex T surface
Ecophon – Focus C
Original description
Ecophon Focus C glass wool panel with Akutex T surface
Material properties
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.80 | 0.85 | 0.85 | 0.95 | 0.95 |
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| Compare | Value | |
|---|---|---|
| tKh = 7.9 in (totale Konstruktionshöhe) | NRC0.85 | |
| tKh = 2 in (totale Konstruktionshöhe) | NRC0.80 |
NRC: 0.85 (derived from ISO 354 lab data)
Weight / density: ca. 3 kg / m² incl. Unterkonstruktion
Dimensions: 600 x 24 in, 625 x 25 in, 1200 x 24 in, 1250 x 25 in, 1600 x 24 in, 1625 x 25 in, 1800 x 24 in, 1875 x 25 in, 2000 x 24 in, 2000 x 25 in, 2400 x 24 in, 2500 x 25 in
Application: Deckenelement, verdeckte Unterkonstruktion
Measured values as a table (2 measurements)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 20 mm · ca. 3 kg / m² incl. Unterkonstruktion · tKh = 200 mm (totale Konstruktionshöhe) · Deckenelement, verdeckte Unterkonstruktion · Akutex T | 0.85 | 0.45 | 0.80 | 0.85 | 0.85 | 0.95 | 0.95 |
| 20 mm · ca. 3 kg / m² incl. Unterkonstruktion · tKh = 50 mm (totale Konstruktionshöhe) · Deckenelement, verdeckte Unterkonstruktion · Akutex T | 0.80 | 0.05 | 0.35 | 0.80 | 1.00 | 1.00 | 0.95 |
Measured values as a table (2 measurements)
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