FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data unter http://www.illbruck-raumakustik.de, March 2001
Value from the PTB table, not verified
illbruck baffel rondo melamine foam cylinder
illbruck baffel rondo
PTB reference data
Original description
illbruck baffel rondo melamine foam cylinder
Material properties
Manufacturer: illbruck GmbH
Wall distance: free-hanging, row center distance 400 mm, 600 mm, 720 mm
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.65
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.35 | 0.75 | 0.85 | 0.75 | 0.65 |
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| Compare | Value | |
|---|---|---|
| free-hanging, Reihenmittenabstand 400 mm | αw0.65 | |
| free-hanging, Reihenmittenabstand 600 mm | αw0.55 | |
| free-hanging, Reihenmittenabstand 720 mm | αw0.55 |
Weight / density: 9...13 kg/m^3
Dimensions: d = 150 mm, l = 1200 mm
Application: Die Elemente können vertical or waagerecht an Tragschienensysteme montiert werden
Measured values as a table (3 measurements)
| Build-up | αw | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9...13 kg/m^3 · free-hanging, Reihenmittenabstand 400 mm · Die Elemente können vertical or waagerecht an Tragschienensysteme montiert werden · offenporige Melaminharz-Schaumoberfläche | 0.65 | 0.15 | 0.11 | 0.08 | 0.21 | 0.35 | 0.48 | 0.68 | 0.76 | 0.80 | 0.82 | 0.87 | 0.80 | 0.75 | 0.76 | 0.75 | 0.62 | 0.74 | 0.60 |
| 9...13 kg/m^3 · free-hanging, Reihenmittenabstand 600 mm · Die Elemente können vertical or waagerecht an Tragschienensysteme montiert werden · offenporige Melaminharz-Schaumoberfläche | 0.55 | 0.13 | 0.06 | 0.04 | 0.15 | 0.24 | 0.40 | 0.50 | 0.60 | 0.67 | 0.67 | 0.69 | 0.60 | 0.70 | 0.61 | 0.58 | 0.55 | 0.59 | 0.50 |
| 9...13 kg/m^3 · free-hanging, Reihenmittenabstand 720 mm · Die Elemente können vertical or waagerecht an Tragschienensysteme montiert werden · offenporige Melaminharz-Schaumoberfläche | 0.55 | 0.08 | 0.10 | 0.08 | 0.15 | 0.23 | 0.38 | 0.45 | 0.59 | 0.58 | 0.55 | 0.59 | 0.60 | 0.55 | 0.53 | 0.50 | 0.48 | 0.48 | 0.45 |
Measured values as a table (3 measurements)
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