Glass & transparentHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
MAkustik MA15 translucent acoustic element Type 2/6 (series 3)
Type 2/6 – Makustik MA15 translucent acoustic element
PTB reference data
Original description
MAkustik MA15 translucent acoustic element Type 2/6 (series 3)
Material properties
Manufacturer: MAkustik
Thickness: 50 mm
Wall distance: 150 mm
Perforation: 7%
Hole size: 2 mm
Backing: acoustic non-woven coated, 30 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.75
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.85 | 1.00 | 1.00 | 1.00 | 0.55 |
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mm · 150 mm | 0.75 | 0.32 | 0.31 | 0.38 | 0.78 | 0.79 | 0.92 | 0.98 | 0.97 | 0.98 | 0.97 | 0.96 | 1.01 | 1.02 | 1.00 | 0.95 | 0.81 | 0.56 | 0.32 |
Measured values as a table (1 measurement)
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