Subwoofers are very specific products. It might seem that the market was dominated by speakers manufactures, but this is not entirely true. Specialized companies often offer much more interesting, more powerful subwoofers than those which can be found in catalogues with common speakers. What do we want when choosing a subwoofer? Obviously - it has to be big, powerful and able to bring out frequencies which will significantly extend the capabilities of our stereo or home cinema system. And that's what XTZ SUB 12.17 is.