WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
MAkustik acoustic panel Type 6/2 MA04 slotted
Type 6/2 – MAkustik MA04 continuously slotted
PTB reference data
Original description
MAkustik acoustic panel Type 6/2 MA04 slotted
Material properties
Manufacturer: MAkustik
Thickness: 46 mm
Wall distance: 170 mm
Perforation: 25% grooves (approx. 11% open area)
Backing: acoustic non-woven, 30 mm mineral wool
Surface: slotted
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 | 0.45 | 1.00 | 1.00 | 0.95 | 0.85 | 0.60 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 46 mm · 170 mm | 0.80 | 0.27 | 0.51 | 0.63 | 1.10 | 0.97 | 1.00 | 1.04 | 0.97 | 0.92 | 0.91 | 0.96 | 0.95 | 0.91 | 0.84 | 0.79 | 0.70 | 0.60 | 0.54 |
Measured values as a table (1 measurement)
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