MAkustik MA04 acoustic panel, grooved, with mineral wool

Type 3/1.5 – MAkustik MA04 continuously grooved

PTB reference data

Original description

Material properties

Manufacturer: MAkustik

Thickness: 46 mm

Wall distance: 170 mm

Perforation: 7%

Backing: 30 mm mineral wool

Surface: grooved

ISO 354 – reverberation chamber

αw

0.77

αp nach ISO 11654

125 Hz

0.45

250 Hz

0.90

500 Hz

0.90

1000 Hz

0.85

2000 Hz

0.80

4000 Hz

0.65

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Method (354): Measured