Acoustic IndexAcoustic Index

B11 Rotary Wall

Rotary Wall

αw 0.95Absorber class A

Freestanding
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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.

All products by this manufacturerManufacturer website

Documents

Fire protectionOEKO-TEXDatasheet

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 × 50 mm) with a 3 mm 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

ISO 354 – reverberation chamber· 2 variants

αw
0.95

Frequency values

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CompareVariantValue
Variant 1αw0.95
Variant 2Aobj4.10m²

Absorber class: A

Test report: M103132/6

Institute: Müller-BBM GmbH, Planegg

Measurement date: 20/08/2018

Room volume: 199.6 m³

Object area: 8 m²

Dimensions: free-standing screen 2000 × 2000 mm (B × H without Füße), thickness 135 mm; Einzelelement each 2.00 × 1.00 m

Terms of use
Measured values as a table (2 measurements)
B11 Rotary Wall: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upαwAbsorber class100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1000 Hz1250 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz
B11-ROTARY WALL, Prüfung als free-standing screen (two Einzelelemente, längskante butt-jointed) | 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 M103132/60.95A0.140.250.330.520.700.870.971.011.001.000.970.970.950.950.970.990.991.00
B11-ROTARY WALL, Prüfung als single object (freistehendes Einzelelement) | Prüfung als freistehendes single object; two Absorberelemente on Metallstützen, 20 cm Abstand zwischen Unterkante and Hallraumboden; drei Positionen | DIN EN ISO 354 | Prüfbericht M103132/6 (Aobj, m²)––0.601.201.602.002.603.804.304.404.204.204.104.004.003.904.104.104.104.20
Measured values as a table (2 measurements)

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