Manufacturer

B11

B11 develops and manufactures lightweight, free-standing and suspended room-acoustic objects in Edling, Bavaria. Founded in 2011 by Dirk Huber, the brand stands for distinctive, design-led acoustic solutions „made in Bavaria“. The core range is based on melamine resin foam (Basotect) with a textile cover (Camira Nexus/Lucia): the TOWER OF SILENCE acoustic column, the CUBE, the square WING, the rotatable ROTARY WALL and the suspended FLYING WALL room divider. B11 also offers a PET line made from recycled ARCHISONIC Felt (Impact Acoustic) and the through-dyed WING UNICOLOR. Sound absorption is documented per product — via accredited measurements (Müller-BBM, University of Stuttgart) or manufacturer data sheets; free-standing single objects as the equivalent absorption area A per object.

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Documents

EPD Fire protection Datasheet

B11 Wall of Silence PET

Name: B11 Wall of Silence PET
Brand: B11

Wall of Silence PET

EPD availableFreestanding

Description

The WALL OF SILENCE PET is the free-standing partition of the PET line — recycled felt, as a calm surface or a perforated design element. It separates and calms areas without closing the room.

Technical data

Material: Recycled polyester acoustic felt (ARCHISONIC Felt)

Surface: Felt surface, milled cut patterns available

Up to fire class: B-s1,d0 — ARCHISONIC Felt — 24 mm tested: B-s1,d0 (EN 13501-1)

Application: Office, reception, hospitality

Certifications: EPD (EN 15804), Cradle-to-Cradle, EcoBau; colour fastness class 6 (ISO 105-B02)

Colours: 36 standard colours (ARCHISONIC Felt, Colour Hive)

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 2 variants

A_obj

4.30 m²

at 1 kHz

Frequency values

A_obj per ISO 354 · octave band (m²)

f (Hz)	125	250	500	1k	2k	4k
A_obj	1.30	2.40	3.10	4.30	5.00	5.20

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Compare		Value
	Motus 1800 × 1800 mm	A_obj4.30m²
	Motus 1800 × 1600 mm	A_obj3.80m²

Institute: Impact Acoustic / B11 (manufacturer data)

Measured values as a table (2 measurements)

B11 Wall of Silence PET: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	α_w	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
24 mm · Motus 1800 × 1600 mm (A_obj, m²)	–	0.81	1.27	1.50	2.19	2.25	2.02	2.48	2.65	3.05	3.46	3.80	4.09	4.32	4.38	4.67	4.55	4.67	4.67
24 mm · Motus 1800 × 1800 mm (A_obj, m²)	–	0.91	1.43	1.68	2.46	2.53	2.27	2.79	2.98	3.43	3.89	4.28	4.60	4.86	4.92	5.25	5.12	5.25	5.25

Measured values as a table (2 measurements)

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Last updated: 11/09/2026