Acoustic IndexAcoustic Index

MUTE+ cover wall absorber

NRC 0.85–0.90

Wall
With a free account

Manufacturer

Lindner Group

Lindner Group, Arnstorf: metal ceilings, heating and cooling ceilings, raised floors, wall and ceiling linings and the MUTE+ sound absorber line.

All products by this manufacturerManufacturer website

Documents

Datasheet acoustic insert CalmaDatasheet MUTE+ cover S45/S60-W

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
Fire class (EN 13501-1): 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

Reverberation chamber (ASTM C423 / ISO 354)· 8 variants

NRC
0.90

Frequency values

Create a permanent free account. Access frequency bands, variants and export.

Free. No password required.

CompareValue
2.4 in—plane absorberNRC0.90
1.8 in—plane absorberNRC0.85
1.8 in2.1 inabsorber 79 x 39 inSabins/unit20
2.4 in2.7 inabsorber 79 x 39 inSabins/unit20
2.4 in2.7 inabsorber 59 x 39 inSabins/unit16
1.8 in2.1 inabsorber 59 x 39 inSabins/unit15
1.8 in2.1 inabsorber 39 x 39 inSabins/unit11
2.4 in2.7 inabsorber 39 x 39 inSabins/unit11

Test report: H220914M1/11g_rev00

NRC: 0.90 (derived from ISO 354 lab data)

Object area: 113 sq ft

Absorber: 0.98 in Calma

Test setup: plane absorber

Terms of use
Measured values as a table (8 measurements)
MUTE+ cover wall absorber: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upNRC100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1000 Hz1250 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz
1.8 in · plane absorber0.850.080.120.290.510.680.880.940.950.970.910.900.860.850.840.840.840.810.83
1.8 in · 2.1 in · absorber 59 x 39 in (sabins/unit)–1.11.14.38.61115181917161514151414141413
1.8 in · 2.1 in · absorber 79 x 39 in (sabins/unit)–1.12.25.4111520242524222019191820202019
1.8 in · 2.1 in · absorber 39 x 39 in (sabins/unit)–1.11.13.26.57.59.712131312119.79.78.69.79.79.79.7
2.4 in · 2.7 in · absorber 39 x 39 in (sabins/unit)–1.11.14.37.59.71113131211119.79.79.79.78.69.78.6
2.4 in · 2.7 in · absorber 59 x 39 in (sabins/unit)–1.11.14.3111417191818171615151515151515
2.4 in · 2.7 in · absorber 79 x 39 in (sabins/unit)–1.12.25.4131622242524232020191919191918
2.4 in · plane absorber0.900.100.150.370.610.810.950.980.950.980.930.960.890.930.910.890.900.830.84
Measured values as a table (8 measurements)

Access frequency bands, variants and export. Create a permanent free account

Last updated:

Calculate reverberation time with this product