Knauf D 127 acoustic design panel, scattered perforation Plus – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 2 variants

αw

0.48

αp per ISO 11654

125 Hz

0.60

250 Hz

0.80

500 Hz

0.55

1000 Hz

0.40

2000 Hz

0.30

4000 Hz

0.25

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Compare		Value
	400 mm	αw0.48
	60 mm	αw0.43

Weight / density: <15 kg / m²

Dimensions: 1200 mm x 1875/2500 mm

Knauf D 127 acoustic design panel, scattered perforation Plus

Material properties