Manufacturer
BK Raumakustik
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.
Documents
aPerf® panel colour
aPerf panel colour
Description
The design-led variant of the aPerf® panel (formerly 'aPerf board colour'): an anthracite fleece core with a one-sided, through-dyed colour lamination for vivid wall and ceiling designs where acoustics become a visible part of the room concept. Mounted directly it damps broadband; with an air gap up to the highest absorption class A. Please note: with the coloured lamination the reaction-to-fire drops to class E (mechanically fixed on a mineral substrate). Where higher fire-protection requirements apply, the uncoated aPerf® panel (B-s1,d0) should be preferred. Broadband absorbers can optionally be built with aPerf® panel colour; the measured values then correspond to the aPerf® panel 25 mm / 3,000 g/m² variants. Minimum order 60 panels per colour; smaller quantities on request.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 6 variants
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.70 | 1.00 | 1.00 | 1.00 | 1.00 |
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| Compare | Value | |
|---|---|---|
| Overall build-up 2 in + 0.8 in bass insert | NRC0.95 | |
| Overall build-up 3.3 in + 2.4 in bass insert | NRC1.05 | |
| Overall build-up 4.1 in + 1.6 in bass insert | NRC1.05 | |
| Overall build-up 4.1 in + 3.1 in bass insert | NRC1.05 | |
| Overall build-up 8.9 in | NRC0.90 | |
| Direct (no gap) | NRC0.70 |
NRC: 0.95 (derived from ISO 354 lab data)
Measured values as a table (6 measurements)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 mm · colour-laminated · Direct (no gap) | 0.70 | 0.05 | 0.05 | 0.08 | 0.16 | 0.23 | 0.32 | 0.47 | 0.60 | 0.74 | 0.83 | 0.86 | 0.95 | 0.98 | 1.01 | 1.04 | 1.00 | 0.96 | 0.91 |
| 25 mm · colour-laminated · Overall build-up 225 mm | 0.90 | 0.53 | 0.44 | 0.53 | 0.72 | 0.82 | 0.94 | 0.94 | 0.93 | 0.95 | 0.84 | 0.87 | 0.99 | 0.96 | 0.99 | 0.99 | 1.03 | 1.02 | 0.98 |
| 25 mm · colour-laminated · Overall build-up 50 mm + 2 cm bass insert | 0.95 | 0.14 | 0.20 | 0.38 | 0.58 | 0.71 | 0.86 | 0.94 | 1.01 | 1.04 | 1.05 | 1.06 | 1.04 | 1.03 | 1.01 | 1.02 | 1.02 | 1.05 | 1.03 |
| 25 mm · colour-laminated · Overall build-up 85 mm + 6 cm bass insert | 1.05 | 0.32 | 0.58 | 0.87 | 0.96 | 1.12 | 1.09 | 1.06 | 1.05 | 1.04 | 1.03 | 1.03 | 0.99 | 1.02 | 1.00 | 1.03 | 1.04 | 1.05 | 1.05 |
| 25 mm · colour-laminated · Overall build-up 105 mm + 4 cm bass insert | 1.05 | 0.28 | 0.47 | 0.78 | 0.95 | 1.09 | 1.05 | 1.06 | 1.05 | 1.03 | 1.03 | 1.02 | 0.98 | 1.01 | 1.01 | 1.04 | 1.04 | 1.06 | 1.04 |
| 25 mm · colour-laminated · Overall build-up 105 mm + 8 cm bass insert | 1.05 | 0.40 | 0.66 | 1.03 | 1.05 | 1.15 | 1.05 | 1.02 | 1.02 | 1.01 | 1.02 | 1.01 | 0.99 | 1.02 | 1.01 | 1.04 | 1.05 | 1.07 | 1.04 |
Measured values as a table (6 measurements)
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