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 Tower of Silence

Name: B11 Tower of Silence
Brand: B11

Tower of Silence

Freestanding

Description

The TOWER OF SILENCE brings calm where no wall or ceiling surface is free — a slender, all-round acoustic column that simply stands in the room and can be moved at any time. Depending on its cross-section it acts as a discreet companion or a deliberate design statement.

Technical data

Material: Melamine resin foam core, 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: Open space, reception, waiting area, lounge, practice

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

A_obj

3.80 m²

at 1 kHz

Frequency values

A_obj per ISO 354 · third-octave band (m²)

f (Hz)	100	125	160	200	250	315
A_obj	1.30	1.70	2.00	3.00	3.30	3.60

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Compare	Value
	A_obj3.80m²
	A_obj2.90m²

Test report: M10 3132/1

Institute: Müller-BBM GmbH, Planegg

Measurement date: 2012-09-25

Room volume: 7,049 cu ft

Dimensions: 0,40 × 0,40 × 2,00 m (L × B × H)

Measured values as a table (2 measurements)

B11 Tower of Silence: 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-TOWER OF SILENCE with Bespannung Nexus \| Prüfung als Einzelabsorber; drei absorber frei on dem Hallraumboden aufgestellt, Abstand untereinander > 2 m; Prüfung nacheinander an zwei Positionen \| DIN EN ISO 354 \| Prüfbericht M10 3132/1 (A_obj, m²)	–	1.30	1.70	2.00	3.00	3.30	3.60	3.70	3.80	3.90	3.80	3.80	3.70	3.60	3.60	3.50	3.50	3.50	3.50
B11-TOWER OF SILENCE with Bespannung Nexus, Grundfläche 300 mm \| Prüfung als Einzelobjekt nach DIN EN ISO 354; drei Absorberelemente direkt on dem Hallraumboden aufgestellt; Prüfung nacheinander an drei unregelmäßig verteilten Positionen \| DIN EN ISO 354 \| Prüfbericht M103132/7 (A_obj, m²)	–	0.70	1.10	1.30	1.50	1.90	2.20	2.60	2.80	2.90	3.00	2.90	2.90	2.80	2.80	2.70	2.70	2.70	2.60

Measured values as a table (2 measurements)

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Last updated: 09/04/2026