FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
pinta acoustic willtec absorber RONDO-S
Absorber RONDO – S
PTB reference data
Original description
pinta acoustic willtec absorber RONDO-S
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: Ø230 mm
Mounting: RMA 400 / 1770, RMA 720 / 1770, RMA 600 / 1770
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
1.00
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.85 | 1.00 | 1.00 | 1.00 | 1.00 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
| Compare | Value | |
|---|---|---|
| RMA 400 / 1770 | αw1.00 | |
| RMA 600 / 1770 | αw0.90 | |
| RMA 720 / 1770 | αw0.80 |
Weight / density: 9,5±1,5 kg/m³
Dimensions: 1250 mm
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ø230 mm · 9,5±1,5 kg/m³ · RMA 400 / 1770 | 1.00 | 0.34 | 0.40 | 0.53 | 0.65 | 0.83 | 1.11 | 1.16 | 1.20 | 1.31 | 1.38 | 1.45 | 1.52 | 1.47 | 1.55 | 1.55 | 1.55 | 1.43 | 1.37 |
| Ø230 mm · 9,5±1,5 kg/m³ · RMA 720 / 1770 | 0.80 | 0.20 | 0.24 | 0.29 | 0.36 | 0.51 | 0.69 | 0.78 | 0.88 | 0.97 | 1.04 | 1.07 | 1.09 | 1.04 | 1.05 | 1.02 | 1.05 | 1.01 | 0.95 |
| Ø230 mm · 9,5±1,5 kg/m³ · RMA 600 / 1770 | 0.90 | 0.26 | 0.30 | 0.39 | 0.45 | 0.61 | 0.77 | 0.88 | 1.00 | 1.19 | 1.19 | 1.22 | 1.23 | 1.23 | 1.27 | 1.20 | 1.17 | 1.12 | 1.13 |
Measured values as a table (3 measurements)
Access frequency bands, variants and export. Create a permanent free account
Last updated: