Mineral woolHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
Ecophon RT A gypsum board and glass wool two-layer absorber
Ecophon – RT A
PTB reference data
Original description
Ecophon RT A gypsum board and glass wool two-layer absorber
Material properties
Manufacturer: Ecophon GmbH
Thickness: 1.4 in
Wall distance: 7.9 in
Surface: Akutex T treated
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.70
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.35 | 0.55 | 0.90 | 1.00 | 0.90 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
NRC: 0.70 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 35 mm · ca. 13 kg / m² incl. Unterkonstruktion · tKh = 200 mm (totale Konstruktionshöhe) · ceiling and Schalldämmung for Räume, deren Zwischenwände nicht bis to the structural ceiling hinaufreichen. Auch vertikale Schalldämmung von z.B. airborne and impact sound. Leicht demontierbar · Akutex T | 0.70 | 0.25 | 0.35 | 0.55 | 0.90 | 1.00 | 0.90 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: