n'H Akustik + Design Topakustik 12/4 HR wood absorber

Topakustik – 12/4 HR

PTB reference data

Original description

Material properties

Manufacturer: n'H Akustik + Design AG

Wall distance: 200 mm

Density: 60 kg/m³

Perforation: 15 %

Backing: 30 mm mineral wool

ISO 354 – reverberation chamber

αw

0.75

αp nach ISO 11654

125 Hz

0.30

250 Hz

0.80

500 Hz

0.95

1000 Hz

1.00

2000 Hz

0.80

4000 Hz

0.65

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Method (354): Measured