Someone told me that this kind ok setup (subwoofer i mean) plays really loud on music in open space enviroment.
As far as I know those are basically PA woofers and the correct cabinet for those would look like the stacks or "bins" you would see at a stadium or large outdoor concert. It is unlikely those woofers do much below 50hz and they definitely won't be terribly efficient in such small airspace.
Again, the whole point of that style (here a lot of Brazilian immigrants do this) is to just cram as much cone area as you can get. You don't really need efficiency because power is so cheap.
Where do you even go to play these sort of things? We had a few shows shut down by police when those things showed up in my region and many of the show organizers had to ban them from participating so that we could continue to have shows. They are extremely obnoxious.