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
Type 2/6 – Makustik MA15 translucent acoustic element
PTB reference data
Original description
MAkustik MA15 translucent acoustic element Type 2/6
Material properties
Manufacturer: MAkustik
Thickness: 20 mm
Wall distance: 150 mm
Perforation: 7%
Hole size: 2 mm
Backing: acoustic non-woven coating, 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 | 0.30 | 0.90 | 1.00 | 0.90 | 0.95 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mm · 150 mm | 0.80 | 0.28 | 0.27 | 0.38 | 0.83 | 0.86 | 1.01 | 1.07 | 1.00 | 0.96 | 0.93 | 0.90 | 0.93 | 0.98 | 0.98 | 0.93 | 0.84 | 0.60 | 0.42 |
Measured values as a table (1 measurement)
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