The difficult part will be your choices. Most subs you can buy at brick and mortar stores don't go to 10hz. I honestly think you need to do some reading on this board first. I think SVS has distribution in Europe, although I'm honestly not sure. For you, diy or aiy (assemble it yourself) would probably be best. I'm guessing a budget of 1000-1500 euros should cover it. But, that's a shot in the dark.
To be more helpful, we need more info on room size, any restrictions (like you live in an apartment or side by side, married). Also, you need to decide a limit on what you're willing to spend.
HT: Marantz 7702 | Crown Amps | Volt 8s | THTs | Panamax 5300PM | Panasonic 55VT60 | Oppo 103 | PS4 |
Family: Pioneer SP-SB23W | Pioneer Kuro Elite 111 | X1
1299s on order