WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe
MAkustik acoustic panel Type 9/2, slotted
Type 9/2 – MAkustik MA04 continuously slotted
PTB reference data
Original description
MAkustik acoustic panel Type 9/2, slotted
Material properties
Manufacturer: MAkustik
Thickness: 46 mm
Wall distance: 320 mm
Perforation: 18% slots (approx. 8% open area)
Backing: acoustic non-woven faced, 30 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.84
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.85 | 0.95 | 0.85 | 0.95 | 0.75 | 0.55 |
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Method (354): Measured
