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 Round Ceiling Absorber
Round variant of the AluWall ceiling absorber: circumferential aluminum frame as a circle, 50 mm polyester core, fabric-covered. Used as a directly mounted element or a free-hanging raft. Diameters from approx. 600 mm to 3500 mm available. Technical absorption values correspond to the rectangular counterpart (Peutz / Fraunhofer, αw ≈ 0.90).
ISO 354 – reverberation chamber
αp nach ISO 11654
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Method (354): Measured
