[avaserfi]

Well, sadly I can't read German and the online translators are not working well enough for me to really understand whats going on...Would it be possible for you to audition this subwoofer at home for a couple days? This would be another way to test the sub and see how you like it.

Your room looks to be fairly large and if you are looking for visceral impact for movies you will want a very capable sub. Since it seems SVS is out of the question due to your overseas situation (correct me if I am wrong with this) there would be a couple options as I see it:

1) Find another commercial subwoofer
2) Build one yourself

Option one will be easier and quicker, but might be harder due to your situation of being overseas. What commercial brands of subwoofer are available to you? Knowing all the brands you have access to and are willing to invest your money in will be helpful here as I live in the states and am not fully aware of the trade limitations etc...

Option two will give you the best bang for your buck, but only if you have previous woodworking experience, the time and willingness and lastly the tools to do this. Building a subwoofer wouldn't be too hard or complicated, but can still be an intimidating task for many. If you are interested there are great resources on this forum.