BK Raumakustik (Böcking Kemmerling Raumakustik GmbH) plans and delivers bespoke room-acoustic solutions made from the aPerf® material: from consulting through development to turnkey installation. Head office in Neuss, Rhine/Main branch in Frankfurt. aPerf® is a sound-absorbing nonwoven made of 100 % polyester (partly recycled PET bottles), thermally and mechanically bonded without chemical binders. The material is self-supporting and can be used without a frame, is dyed throughout, ball-impact-safe per DIN 18032, OEKO-TEX Standard 100 certified and fully recyclable. Manufactured in Germany and Switzerland. From the aPerf® materials BK Raumakustik builds wall panels, ceiling rafts, desk dividers, broadband and bass absorbers, acoustic prints and industrial hall acoustics. Member of the DGNB.
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The micro-perforated acoustic panel: around 300,000 micro-pores per m² in a surface lamination that reads as closed, on a high-absorption aPerf® core. From a normal viewing distance the surface looks smooth and closed while the acoustics stay fully effective. Wipeable and therefore also suited to hygiene-sensitive areas. In three versions: oak decor foil and real oak veneer (each 19 mm, one-sided) plus white PET (25 mm, double-sided). Tunable via wall distance and backing bass inserts (type 204/306/612) up to the highest absorption class A.
ISO 354 – reverberation chamber· 12 variants
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αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| Overall build-up 50 mm + bass insert type 306 | αw0.95 | |
| Overall build-up 80 mm + bass insert type 612 | αw0.95 | |
| Overall build-up 100 mm + bass insert type 816 | αw0.95 | |
| Overall build-up 200 mm | αw0.95 | |
| Overall build-up 40 mm + bass insert type 204 | αw0.90 | |
| Overall build-up 400 mm | αw0.85 | |
| Overall build-up 50 mm | αw0.75 | |
| Direct (no gap) | αw0.55 |
Absorber class: A
