Name: Knauf Perllit acoustic tile No. 74
Creator: Physikalisch-Technische Bundesanstalt (PTB)

Knauf Perllit acoustic tile No. 74 – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 2 variants

αw

0.46

αp per ISO 11654

125 Hz

0.80

250 Hz

0.55

500 Hz

0.50

1000 Hz

0.45

2000 Hz

0.35

4000 Hz

0.20

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Compare		Value
	500 mm	αw0.46
	50 mm	αw0.41

Weight / density: ca. 16 kg / m²

Dimensions: 625 x 625 mm

Knauf Perllit acoustic tile No. 74

Material properties