WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe
MAkustik Type 9/2 MA04 slotted acoustic panel
Type 9/2 – MAkustik MA04 continuous grooves
PTB reference data
Original description
MAkustik Type 9/2 MA04 slotted acoustic panel
Material properties
Manufacturer: MAkustik
Thickness: 46 mm
Wall distance: 0 mm
Perforation: 18% grooves (approx. 8% open)
Backing: 30 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.62
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.45 | 1.00 | 0.95 | 0.65 | 0.50 |
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Method (354): Measured
