raumAKUSTIKS (owner: Helge Herrmann) manufactures custom sound absorbers in Berlin for room acoustics in offices, industrial, retail, hospitality and residential settings. Every AluWall absorber is made to measure: an aluminium frame with a highly absorbent polyester core (ISO-BOND®, thermal conductivity class WLG 040, fire class B1 per DIN 4102), or a glass-wool core for the A2 variant. The visible face is a seamlessly tensioned, flame-retardant fabric in any colour, optionally printed with high-resolution digital artwork (seamless up to 300 cm). Beyond the AluWall system, the range includes acoustic louvres, transparent honeycomb sound shields, microperforated acrylic glass and acoustic curtains. Installation and planning are available throughout Germany as well as in Austria, Switzerland and the Benelux countries.
WebsiteAluWall Ceiling Absorber (Direct Mounting)
AluWall panel mounted directly on ceiling or roof soffit with 50 mm polyester core and aluminum frame. Suitable when no suspended ceiling can be installed or the raw ceiling should remain visible. Reverberation chamber measurement by Peutz / Fraunhofer Institute confirms αw ≈ 0.90, Class A at 300 mm suspension distance. With flush direct mounting, low-frequency absorption is reduced, mid-/high-frequency remains almost the same. Special design for sloped roofs, concrete ceilings (on request) and as a grid/segment solution.
ISO 354 – reverberation chamber
αp nach ISO 11654
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Method (354): Measured
