Originally posted by GlenW
active Design-Subwoofer - Downfire-Baßreflex - 100 W Sinuns - glass plate on the upper side - Übertragungsbereich: 25 - 250 Hz - adjustable transition frequency - weight: 20,9 kg, spikes integrated, RCA-Eingang - built-in frequency points
Unfortunately, as with most subwoofer marketing, the above specifications tell you absolutely nothing apart as I assume from the picture that you can see that it's a downward firing active subwoofer with a glass plate on top.
The performance of a subwoofer depends on it's design coupled with the power and quality of amplifier and driver. It would be nice to think that a quoted frequency range would mean something but unfortunately it doesn't as there are many ways of measuring the response and no common standard.
Unfortunately, in common with most of the forum members, I have never heard of this particular subwoofer.
I have looked at a German website and it would seem to be costing around £100. In my opinion decent subwoofers are expensive to manufacture if you use quality components and whilst subs at this price level might add a bit of "local colour" to explosions in a Hollywood blockbuster it will be mainly distortion and will likely sound terrible with music.