Ernst Schmelze Eco-Phondraht wood fiber absorber, slotted, 40% open area – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 2 variants

αw

0.80

αp per ISO 11654

125 Hz

0.35

250 Hz

0.75

500 Hz

0.90

1000 Hz

0.90

2000 Hz

0.95

4000 Hz

1.00

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Compare		Value
	200 mm	αw0.80
	50 mm	αw0.75

Weight / density: 2,2 kg / m²

Dimensions: bis 2000 x 1200 mm

Ernst Schmelze Eco-Phondraht wood fiber absorber, slotted, 40% open area

Material properties