Manufacturer
raumton
raumton GmbH from Berlin plans, manufactures and installs sound absorbers for rooms in which people speak: open-plan and single offices, conference and presentation rooms, play and learning rooms as well as meeting and dining areas. The range runs from ceiling and wall absorbers through baffles, stretch ceilings and cubes to free-standing partition and floor absorbers. The absorber core is melamine resin foam or PET acoustic fleece, both free of artificial and natural mineral fibres, halogens and CFCs. For the fabric covering, more than 300 colours and textures are available in polyester, pure new wool, blended fabrics or non-combustible glass fabric. All products are made to bespoke dimensions.
Documents
raumton Round ceiling absorber
Round ceiling absorber
Description
The round ceiling absorber has a core of PET acoustic fleece and is suspended beneath the ceiling on three steel cables at a continuously adjustable height, or installed flush underneath it. The covering is available in polyester, pure new wool, blended fabric or non-combustible glass fabric, with a wide choice of colours and textures.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.60 | 1.00 | 1.00 | 1.00 | 1.00 |
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Method (354): Measured
Mounting type: Type B – With air gap (ASTM E795: B mounting)
NRC: 0.90 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
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