Knauf D 127 acoustic design panel 8/18Q
D 127 perforation 8/18Q
NRC 0.75–0.80
PTB reference data
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GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data www.knauf.de
Value from the PTB table, not verified
Original description
Knauf D 127 acoustic design panel 8/18Q
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 0.49 in + 0.79 in mineral fiber
Wall distance: 16 in, 2.4 in
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.80
Frequency values
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| Compare | Value | |
|---|---|---|
| 16 in | NRC0.80 | |
| 2.4 in | NRC0.75 |
NRC: 0.80 (derived from ISO 354 lab data)
Weight / density: <15 kg / m²
Dimensions: 47 in x 79 in
Measured values as a table (2 measurements)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.49 in + 0.79 in Mineralfaser · <15 kg / m² · 16 in | 0.80 | 0.48 | 0.66 | 0.95 | 0.95 | 0.95 | 0.86 | 0.79 | 0.77 | 0.88 | 0.89 | 0.90 | 0.81 | 0.75 | 0.67 | 0.65 | 0.63 | 0.75 |
| 0.49 in + 0.79 in Mineralfaser · <15 kg / m² · 2.4 in | 0.75 | 0.15 | 0.27 | 0.25 | 0.40 | 0.53 | 0.65 | 1.00 | 1.09 | 1.13 | 1.04 | 0.90 | 0.78 | 0.65 | 0.52 | 0.55 | 0.62 | 0.68 |
Measured values as a table (2 measurements)
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