MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe unter http://www.illbruck-raumakustik.de
illbruck SQUARELINE expanded metal cassette with illtec FM insert
SQUARELINE
PTB reference data
Original description
illbruck SQUARELINE expanded metal cassette with illtec FM insert
Material properties
Manufacturer: illbruck GmbH
Thickness: 5 mm (insulation layer)
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.46
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.45 | 0.30 | 0.40 | 0.55 | 0.70 |
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Method (354): Measured
