The sub is amazing after a lot of searching.
1 When the Germans say it has 240 wrms, you should know that it has 241 w rms. The build quality is A-class in every aspect. Compared to a similar one that claimed to have 500 w rms and didn't even have 50, see TEMU... the differences are enormous.
2 You may call it an under seat sub, but the first placement under the passenger seat was good... but it didn't show its teeth.
Logical, since it has the seat sponge which, let's be honest, has a good percentage of sound absorption, plus the fact that the 3-5 cm from the speaker membrane kills the bass. Placing it on the back of the rear seat brought out all its greatness. You would think another big SUB was installed. Despite its small size, the low frequencies of 30-50-100 hz generously and comfortably fill the car cabin, making this little box perform 300% better than under the seat. I wonder what would happen if I had gotten the 10-inch one.
With eyes closed.
Disappeared in the back.