MAkustik MA04 grooved acoustic panel with mineral wool

Type 6/2 – MAkustik MA04 continuously grooved

PTB reference data

Original description

Material properties

Manufacturer: MAkustik

Thickness: 46 mm

Wall distance: 0 mm

Perforation: 25 % grooves (approx. 11 % continuously open)

Hole size: 2 mm grooves, 6 mm spacing

Backing: 30 mm mineral wool

ISO 354 – reverberation chamber

αw

0.66

αp nach ISO 11654

125 Hz

0.10

250 Hz

0.45

500 Hz

1.00

1000 Hz

1.00

2000 Hz

0.80

4000 Hz

0.60

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Method (354): Measured