Manufacturer
Lindner Group
Lindner Group, Arnstorf: metal ceilings, heating and cooling ceilings, raised floors, wall and ceiling linings and the MUTE+ sound absorber line.
MUTE+ cover wall absorber
Description
Wall absorber with an aluminium frame, fabric covering of polyester or wool and an additional acoustic insert. Free of mineral fibres and allergy-friendly, 100 percent recyclable and reusable. The frame sits concealed behind the covering.
Technical data
Material: Aluminium frame, covering of polyester or wool
Surface: Fabric covering wrapped over the edge
Up to fire class: B1 — per DIN 4102, wool covering B2
Certifications: Oeko-Tex Standard 100 (S24-3191, Hohenstein HTTI), Indoor Air Comfort GOLD, emission class A+ (VOC, France)
Colours: 20 standard colours, covering of polyester or wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 8 variants
αw
0.95
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.80 | 0.95 | 0.95 | 0.90 | 0.85 |
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| Compare | Value | ||
|---|---|---|---|
| 60 mm | — | αw0.95 | |
| 45 mm | — | αw0.90 | |
| 45 mm | 53 mm | Aobj1.90m² | |
| 60 mm | 68 mm | Aobj1.90m² | |
| 60 mm | 68 mm | Aobj1.50m² | |
| 45 mm | 53 mm | Aobj1.40m² | |
| 45 mm | 53 mm | Aobj1.00m² | |
| 60 mm | 68 mm | Aobj1.00m² |
Absorber class: A
Test report: H220914M1/11g_rev00
Object area: 10.5 m²
Absorber: 25 mm Calma
Measured values as a table (8 measurements)
| Build-up | αw | Absorber class | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 45 mm · plane absorber | 0.90 | A | 0.08 | 0.12 | 0.29 | 0.51 | 0.68 | 0.88 | 0.94 | 0.95 | 0.97 | 0.91 | 0.90 | 0.86 | 0.85 | 0.84 | 0.84 | 0.84 | 0.81 | 0.83 |
| 45 mm · 53 mm · absorber 1500 x 1000 mm (Aobj, m²) | – | – | 0.10 | 0.10 | 0.40 | 0.80 | 1.00 | 1.40 | 1.70 | 1.80 | 1.60 | 1.50 | 1.40 | 1.30 | 1.40 | 1.30 | 1.30 | 1.30 | 1.30 | 1.20 |
| 45 mm · 53 mm · absorber 2000 x 1000 mm (Aobj, m²) | – | – | 0.10 | 0.20 | 0.50 | 1.00 | 1.40 | 1.90 | 2.20 | 2.30 | 2.20 | 2.00 | 1.90 | 1.80 | 1.80 | 1.70 | 1.90 | 1.90 | 1.90 | 1.80 |
| 45 mm · 53 mm · absorber 1000 x 1000 mm (Aobj, m²) | – | – | 0.10 | 0.10 | 0.30 | 0.60 | 0.70 | 0.90 | 1.10 | 1.20 | 1.20 | 1.10 | 1.00 | 0.90 | 0.90 | 0.80 | 0.90 | 0.90 | 0.90 | 0.90 |
| 60 mm · 68 mm · absorber 1000 x 1000 mm (Aobj, m²) | – | – | 0.10 | 0.10 | 0.40 | 0.70 | 0.90 | 1.00 | 1.20 | 1.20 | 1.10 | 1.00 | 1.00 | 0.90 | 0.90 | 0.90 | 0.90 | 0.80 | 0.90 | 0.80 |
| 60 mm · 68 mm · absorber 1500 x 1000 mm (Aobj, m²) | – | – | 0.10 | 0.10 | 0.40 | 1.00 | 1.30 | 1.60 | 1.80 | 1.70 | 1.70 | 1.60 | 1.50 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 |
| 60 mm · 68 mm · absorber 2000 x 1000 mm (Aobj, m²) | – | – | 0.10 | 0.20 | 0.50 | 1.20 | 1.50 | 2.00 | 2.20 | 2.30 | 2.20 | 2.10 | 1.90 | 1.90 | 1.80 | 1.80 | 1.80 | 1.80 | 1.80 | 1.70 |
| 60 mm · plane absorber | 0.95 | A | 0.10 | 0.15 | 0.37 | 0.61 | 0.81 | 0.95 | 0.98 | 0.95 | 0.98 | 0.93 | 0.96 | 0.89 | 0.93 | 0.91 | 0.89 | 0.90 | 0.83 | 0.84 |
Measured values as a table (8 measurements)
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