Manufacturer

raumAKUSTIKS

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.

Website

Manufacturer page

raumAKUSTIKS Ceiling Absorber

Name: raumAKUSTIKS Ceiling Absorber
Brand: raumAKUSTIKS

AluWall Ceiling Absorber (Direct Mounting)

Ceiling

Description

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.

Technical data

Material: aluminum frame, 50 mm polyester core

Up to fire class: B1 (core material and fabric covering according to DIN 4102-1, B2 possible). A2 with glass wool core on request

Application: Ceiling Absorber (horizontal, sloped or on rafters)

Certifications: OEKO-TEX Standard 100 test no. 94.0.0541 (core material), building material approval no. Z-23.1.3-278, WLG 0.035 according to DIN 52612, sound-insulating properties > 5 kNs/m⁴ according to DIN 52213, externally monitored by FIW Munich

Colours: Over 45 standard fabric colors (Kvadrat and others), additional collections on request (Gabriel, Camira). Fabric covering replaceable and washable at 40 °C. Digital print with 150 dpi, seamless up to 300 cm.

Measurement data

Sound absorption

ISO 354 – reverberation chamber

αw

0.90

Frequency values

αp nach ISO 11654

f (Hz)	125	250	500	1k	2k	4k
αp	0.20	0.55	0.85	0.90	0.95	1.00

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