Micro-perforated acoustic absorber made of anodized aluminum or stainless steel. Hole diameter 0.5 mm, perforation ratio 1%. Absorber without porous material – purely via Helmholtz resonance and friction at the micro-holes. Hygienic, cleanroom-compatible, corrosion-resistant. For swimming pools, food industry, and laboratories.

Measurement data

Sound absorption

ISO 354 (reverberation chamber) & ISO 10534 (impedance tube)

αw

0.65

Frequency values

αp nach ISO 11654

125 Hz

0.30

250 Hz

0.65

500 Hz

0.80

1000 Hz

0.70

2000 Hz

0.55

4000 Hz

0.45

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Method (354): Measured

Mounting type: Type E – Suspended

Room volume: 210 m³

Object area: 10 m²

Measurement date (354): 2024-01-20

Method (10534): Measured

Measurement date (10534): 2024-01-25

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