| Number | skin mm | density kg/m3 | Total thickness mm | mass kg | STL dB |
| 01-original structure | 2.5 | 60 | 60 | 20.1 | 24.7 |
| S01-Optimized skin | 3.5 | 60 | 62 | 23 | 26 |
| S02-Optimized foam | 2.5 | 75 | 60 | 25.2 | 25.6 |
| S03-Optimized damping | 2.5 | 75 | 63 | 24 | 27.1 |