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.
WebsiteaPerf panel
The self-supporting acoustic panel at the heart of the aPerf® family (formerly 'aPerf board') and the base material for wall panels, ceiling rafts, desk dividers and furniture. Thanks to its inherent stability it needs no frame or cover and can be cut like a chipboard: as a cloud, disc, freeform shape, with groove or rebate, printable and paintable. Sound absorption is governed by the distance from the wall: mounted directly the panel works broadband in the mid and high range, while a larger air gap or backing bass-absorber elements extend it deep into the low end and up to the highest absorption class A.
ISO 354 – reverberation chamber· 36 variants
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αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| Overall build-up 70 mm + bass insert type 612 | αw1.00 | |
| Overall build-up 90 mm + bass insert type 408 | αw1.00 | |
| Overall build-up 90 mm + bass insert type 818 | αw1.00 | |
| Overall build-up 50 mm + bass insert type 306 | αw0.95 | |
| Overall build-up 200 mm | αw0.90 | |
| Overall build-up 400 mm | αw0.80 | |
| Overall build-up 60 mm | αw0.65 | |
| Overall build-up 50 mm | αw0.50 | |
| Direct (no gap) | αw0.25 |
Absorber class: A
Weight / density: 2.000 g/m²
