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

Fire protection OEKO-TEX Datasheet

B11 Rotary Wall

Name: B11 Rotary Wall
Brand: B11

Rotary Wall

Freestanding

Description

The ROTARY WALL is room divider and stage in one — a rotatable acoustic wall that structures areas and can be re-oriented with a single turn. It separates sight and sound without closing the room off.

Technical data

Material: Melamine resin foam (2 × 2 in) with a 0.1 in MDF core layer, textile-covered

Surface: Camira Nexus (100% polyester); Lucia / Lucia CS on request

Up to fire class: B1 — flame-retardant per DIN 4102-1 (Basotect core)

Application: Coworking, foyer, learning and meeting zones

Certifications: Oeko-Tex Standard 100 (cover); building-authority test certificate Basotect G

Colours: Camira Nexus, Lucia & Lucia CS; custom colours per RAL / brand CI

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 2 variants

NRC

0.90

Frequency values

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.25	0.70	1.00	1.00	0.95	1.00

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Compare	Value
	NRC0.90
	A_obj4.10m²

Test report: M103132/6

NRC: 0.90 (derived from ISO 354 lab data)

Institute: Müller-BBM GmbH, Planegg

Measurement date: 2018-08-20

Room volume: 7,049 cu ft

Object area: 86 sq ft

Dimensions: free-standing screen 2000 × 79 in (B × H without Füße), thickness 5.3 in; Einzelelement each 2,00 × 1,00 m

Measured values as a table (2 measurements)

B11 Rotary Wall: 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
B11-ROTARY WALL, Prüfung als free-standing screen (zwei Einzelelemente, längskante stumpf gestoßen) \| Prüfung als free-standing screen, praxisgerecht on dem Hallraumboden stehend (Füße 200 mm); Prüffläche nach ASTM C 423 (2 × B × H) = 8,00 m²; Auswertung Absorptionsgrad nach ASTM C 423 \| DIN EN ISO 354 / DIN EN ISO 11654 (Bewertung); Absorptionsgrad-Auswertung nach ASTM C 423 \| Prüfbericht M103132/6	0.90	0.14	0.25	0.33	0.52	0.70	0.87	0.97	1.01	1.00	1.00	0.97	0.97	0.95	0.95	0.97	0.99	0.99	1.00
B11-ROTARY WALL, Prüfung als Einzelobjekt (freistehendes Einzelelement) \| Prüfung als freistehendes Einzelobjekt; zwei Absorberelemente on Metallstützen, 20 cm Abstand zwischen Unterkante and Hallraumboden; drei Positionen \| DIN EN ISO 354 \| Prüfbericht M103132/6 (A_obj, m²)	–	0.60	1.20	1.60	2.00	2.60	3.80	4.30	4.40	4.20	4.20	4.10	4.00	4.00	3.90	4.10	4.10	4.10	4.20

Measured values as a table (2 measurements)

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Last updated: 09/09/2026