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.

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12 mm · 2.000 g/m² 19 mm · 3.000 g/m² 19 mm · 4.000 g/m² 25 mm · 3.000 g/m² 25 mm · 4.000 g/m² 40 mm · 3.000 g/m² 40 mm · 4.000 g/m² 25 mm · 3.000 g/m² (beige)40 mm · 3.000 g/m² (beige)

aPerf® panel

Name: aPerf® panel
Brand: BK Raumakustik

aPerf panel

WallCeilingFree-hanging

Description

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.

Technical data

Material: 100 % polyester (PET, partly recycled), thermally & mechanically bonded, no chemical binders

Surface: smooth; colour from the fibres (beige tones dyed through); printable and paintable (spray application)

Up to fire class: Low flammability (B-s1,d0) per DIN EN 13501-1; class B1 per DIN 4102-1 — DIN EN 13501-1; DIN 4102-1 building-material class B1

Application: wall and ceiling panels, ceiling rafts, desk dividers, broadband/bass absorbers, furniture

Certifications: OEKO-TEX Standard 100; ecobau eco1; ball-impact safety DIN 18032 (MPA University of Stuttgart); inert to fungi/bacteria DIN EN ISO 846 (MPA Bremen); emission-tested AgBB 2021 / French VOC A+ / Belgian VOC; health-compatibility clearance (expert SVB Mokroß)

Colours: warm white, light grey, felt-look, anthracite, matt black (colour from the fibres, not dyed through); 25 / 1.6 in also in cotton/stone beige and desert taupe (dyed through)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 36 variants

Choose thickness

NRC

1.05

Frequency values

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.45	1.00	1.00	1.00	1.00	1.00

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Compare		Value
	Overall build-up 2.8 in + 2.4 in bass insert	NRC1.05
	Overall build-up 3.5 in + 1.6 in bass insert	NRC1.00
	Overall build-up 3.5 in + 3.1 in bass insert	NRC1.05
	Overall build-up 2 in + 1.2 in bass insert	NRC0.90
	Overall build-up 7.9 in	NRC0.85
	Overall build-up 16 in	NRC0.75
	Overall build-up 2.4 in	NRC0.75
	Overall build-up 2 in	NRC0.65
	Direct (no gap)	NRC0.40

NRC: 1.05 (derived from ISO 354 lab data)

Weight / density: 2.000 g/m²

Measured values as a table (36 measurements)

aPerf® panel: sound absorption coefficient αs per ISO 354 by frequency and test build-up
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
12 mm · 2.000 g/m² · Direct (no gap)	0.40	0.03	0.02	0.02	0.04	0.07	0.10	0.14	0.22	0.29	0.41	0.53	0.62	0.75	0.81	0.89	0.96	0.98	1.00
12 mm · 2.000 g/m² · Overall build-up 50 mm	0.65	0.03	0.04	0.09	0.15	0.18	0.28	0.36	0.52	0.64	0.83	0.94	0.99	1.02	1.01	0.99	0.96	0.92	0.94
12 mm · 2.000 g/m² · Overall build-up 50 mm + 3 cm bass insert	0.90	0.11	0.17	0.33	0.53	0.63	0.79	0.90	0.98	1.02	1.04	1.06	1.03	1.03	1.00	1.00	1.01	1.01	1.01
12 mm · 2.000 g/m² · Overall build-up 60 mm	0.75	0.06	0.13	0.21	0.29	0.37	0.46	0.57	0.71	0.81	0.94	0.98	1.02	1.01	1.01	0.92	0.89	0.98	1.03
12 mm · 2.000 g/m² · Overall build-up 70 mm + 6 cm bass insert	1.05	0.25	0.42	0.71	0.88	1.04	1.10	1.06	1.08	1.07	1.05	1.04	0.99	1.01	0.99	1.01	1.03	1.03	1.00
12 mm · 2.000 g/m² · Overall build-up 90 mm + 4 cm bass insert	1.00	0.22	0.33	0.62	0.83	1.02	1.05	1.07	1.07	1.05	1.05	1.03	0.98	0.99	0.97	1.01	1.03	1.04	1.02
12 mm · 2.000 g/m² · Overall build-up 90 mm + 8 cm bass insert	1.05	0.30	0.60	0.95	1.04	1.14	1.09	1.05	1.05	1.03	1.02	1.02	0.98	1.01	1.00	1.03	1.02	1.03	1.02
12 mm · 2.000 g/m² · Overall build-up 200 mm	0.85	0.23	0.42	0.58	0.72	0.87	0.88	0.92	0.94	0.94	0.82	0.72	0.85	0.93	0.89	0.96	0.96	1.00	1.04
12 mm · 2.000 g/m² · Overall build-up 400 mm	0.75	0.36	0.73	0.85	0.81	0.74	0.84	0.74	0.64	0.74	0.81	0.79	0.88	0.91	0.92	0.98	1.01	1.02	1.05
25 mm · 3.000 g/m² · Direct (no gap)	0.70	0.06	0.06	0.07	0.14	0.23	0.33	0.46	0.60	0.72	0.82	0.89	0.96	1.00	1.00	1.04	1.03	1.02	0.95
25 mm · 3.000 g/m² · Overall build-up 50 mm	0.80	0.05	0.07	0.15	0.25	0.32	0.47	0.63	0.81	0.91	1.00	1.04	1.03	1.03	1.02	1.01	1.01	1.03	1.04
25 mm · 3.000 g/m² · 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 · 3.000 g/m² · Overall build-up 75 mm	0.90	0.14	0.18	0.35	0.50	0.60	0.76	0.86	0.93	1.00	1.07	1.05	1.00	1.00	0.99	0.97	1.03	1.03	1.03
25 mm · 3.000 g/m² · 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 · 3.000 g/m² · 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 · 3.000 g/m² · 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
25 mm · 3.000 g/m² · Overall build-up 200 mm	0.95	0.29	0.50	0.67	0.79	0.96	0.92	0.99	0.98	0.99	0.91	0.86	0.97	0.98	0.99	1.02	1.03	1.07	1.07
25 mm · 3.000 g/m² · Overall build-up 400 mm	0.85	0.43	0.79	0.82	0.83	0.77	0.88	0.82	0.76	0.89	0.92	0.93	0.98	0.98	1.02	1.05	1.06	1.09	1.10
40 mm · 3.000 g/m² · Direct (no gap)	0.80	0.10	0.11	0.17	0.32	0.44	0.61	0.71	0.81	0.89	0.92	0.96	0.98	1.00	1.02	1.04	1.04	1.08	1.06
40 mm · 3.000 g/m² · Overall build-up 50 mm	0.85	0.10	0.16	0.23	0.41	0.51	0.64	0.80	0.89	0.94	0.99	1.00	1.00	0.99	1.01	1.00	0.98	1.02	1.02
40 mm · 3.000 g/m² · Overall build-up 200 mm	0.95	0.31	0.46	0.65	0.85	0.93	0.97	1.04	1.03	1.02	0.96	0.90	1.00	0.99	1.01	1.02	1.04	1.04	1.07
40 mm · 3.000 g/m² · Overall build-up 400 mm	0.95	0.46	0.78	0.78	0.96	0.97	0.91	0.88	0.82	0.93	1.00	0.98	0.99	1.00	1.02	1.02	1.04	1.04	1.05
25 mm · 4.000 g/m² · Direct (no gap)	0.75	0.04	0.07	0.12	0.23	0.32	0.46	0.59	0.75	0.81	0.88	0.95	1.01	0.97	1.03	1.00	0.98	1.00	1.01
25 mm · 4.000 g/m² · Overall build-up 50 mm	0.80	0.07	0.10	0.21	0.34	0.42	0.59	0.74	0.88	0.94	0.99	0.99	0.99	0.98	0.96	0.98	0.99	1.01	1.00
25 mm · 4.000 g/m² · Overall build-up 50 mm + 2 cm bass insert	0.95	0.17	0.25	0.48	0.69	0.82	0.88	0.92	0.96	0.97	0.98	0.98	0.98	0.98	0.96	0.98	1.00	1.02	1.01
25 mm · 4.000 g/m² · Overall build-up 75 mm	0.90	0.17	0.21	0.44	0.61	0.72	0.79	0.87	0.90	0.95	0.97	0.97	0.95	0.95	0.98	0.98	1.03	1.01	1.04
25 mm · 4.000 g/m² · Overall build-up 85 mm + 6 cm bass insert	0.95	0.42	0.63	0.89	0.88	1.02	0.92	0.90	0.91	0.91	0.92	0.94	0.94	0.97	0.97	1.00	1.01	1.01	1.00
25 mm · 4.000 g/m² · Overall build-up 105 mm + 4 cm bass insert	0.95	0.34	0.57	0.82	0.88	1.01	0.90	0.90	0.91	0.91	0.92	0.93	0.94	0.97	0.97	1.00	1.02	1.02	1.00
25 mm · 4.000 g/m² · Overall build-up 105 mm + 8 cm bass insert	0.95	0.45	0.72	0.92	0.89	0.99	0.87	0.87	0.88	0.88	0.90	0.92	0.94	0.98	0.97	1.00	1.02	1.04	1.01
25 mm · 4.000 g/m² · Overall build-up 200 mm	0.90	0.31	0.49	0.70	0.72	0.87	0.82	0.87	0.86	0.88	0.84	0.84	0.95	0.96	0.98	1.01	1.02	1.04	1.06
25 mm · 4.000 g/m² · Overall build-up 400 mm	0.80	0.44	0.67	0.68	0.71	0.67	0.78	0.76	0.73	0.84	0.87	0.89	0.96	0.96	1.00	1.04	1.05	1.07	1.08
40 mm · 4.000 g/m² · Direct (no gap)	0.85	0.11	0.14	0.20	0.35	0.52	0.66	0.81	0.90	0.95	1.00	1.01	1.01	1.04	1.04	1.05	1.07	1.08	1.11
40 mm · 4.000 g/m² · Overall build-up 80 mm + 4 cm bass insert	1.05	0.24	0.42	0.73	0.93	1.06	1.12	1.10	1.08	1.08	1.05	1.04	1.01	1.03	1.03	1.05	1.05	1.06	1.02
40 mm · 4.000 g/m² · Overall build-up 120 mm + 4 cm bass insert	1.10	0.32	0.55	0.90	1.04	1.20	1.14	1.11	1.07	1.08	1.04	1.04	1.01	1.04	1.03	1.05	1.05	1.06	1.05
40 mm · 4.000 g/m² · Overall build-up 120 mm + 8 cm bass insert	1.10	0.40	0.76	1.14	1.11	1.22	1.12	1.08	1.05	1.07	1.04	1.04	1.02	1.04	1.03	1.05	1.06	1.07	1.05
40 mm · 4.000 g/m² · Overall build-up 240 mm	0.95	0.56	0.43	0.59	0.72	0.85	0.95	0.94	0.93	0.94	0.94	0.98	1.04	1.01	1.03	1.03	1.08	1.09	1.08

Measured values as a table (36 measurements)

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Last updated: 09/16/2026