Mineral woolLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
renz VPR Type 1 compound panel resonator
VPR – Type 1
PTB reference data
Original description
renz VPR Type 1 compound panel resonator
Material properties
Manufacturer: renz GmbH System-Komplett-Ausbau
Thickness: 100 mm
Backing: polyester, viscose or mineral damping materials
Surface: perforated metal sheet
Mounting: perforated metal sheet, non-woven, vibrating plate, damper
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.30
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 1.00 | 0.85 | 0.60 | 0.35 | 0.25 | 0.20 |
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| Compare | Value |
|---|---|
| αw0.30 | |
| αw0.25 |
Dimensions: 1500 x 1000 mm
Measured values as a table (2 measurements)
| Build-up | αw | 63 Hz | 80 Hz | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 mm · sichtbare Anwendung | 0.25 | 0.51 | 0.68 | 0.88 | 0.92 | 0.72 | 0.92 | 0.78 | 0.64 | 0.56 | 0.44 | 0.38 | 0.31 | 0.24 | 0.19 | 0.17 | 0.14 | 0.16 | 0.14 | 0.15 |
| 100 mm · verdeckte Anwendung | 0.30 | 0.80 | 1.05 | 1.07 | 1.15 | 0.85 | 0.96 | 0.82 | 0.74 | 0.66 | 0.58 | 0.54 | 0.40 | 0.38 | 0.33 | 0.31 | 0.25 | 0.22 | 0.25 | 0.15 |
Measured values as a table (2 measurements)
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