Topakustik 5/3 T fiber absorber, grooved and perforated

Topakustik – 5/3 T

PTB reference data

Original description

Material properties

Manufacturer: n'H Akustik + Design AG

Wall distance: 200 mm

Density: 60 kg/m³

Perforation: 3% / 31%

Backing: 30 mm mineral wool absorber

ISO 354 – reverberation chamber

αw

0.76

αp nach ISO 11654

125 Hz

0.55

250 Hz

0.90

500 Hz

1.05

1000 Hz

0.90

2000 Hz

0.75

4000 Hz

0.45

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Method (354): Measured