WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe
MAkustik MA04 grooved acoustic panel with mineral wool
Type 3/1.5 – MAkustik MA04 continuously grooved
PTB reference data
Original description
MAkustik MA04 grooved acoustic panel with mineral wool
Material properties
Manufacturer: MAkustik
Thickness: 46 mm
Wall distance: 320 mm
Perforation: 33 % grooves (approx. 7 % continuously open)
Hole size: 1.5 mm grooves, 3 mm spacing
Backing: 30 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.80
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.80 | 0.85 | 0.95 | 0.80 | 0.70 |
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Method (354): Measured
