The 12.17 is a very good subwoofer which creates a high sound pressure and plays really precise. I mostly listen to music and use it for studio purpose. In combination with my studio monitors it creates a really flat and neutral frequency response. It was very easy to install and fits great with my monitors. I would have loved to have access to the inner DSP of the subwoofer which seems to do a really good job. Maybe that is possible in the future Otherwise a really great subwoofer.

A great and very powerful subwoofer. The bass is accurately reproduced. Fits great with my stereo system with two large floor standing speakers. The 12.17 is perfect as addition for movies to provide the deepest bass which the floorstanders cannot provide.

It took me a long time to think about what a subwoofer I want to get me and only after a long search I had the idea to look look at the XTZ subs. What can I say ... I was not disappointed. The sub is mainly used for movies and series but I also use it to play techno and other sub-genres of electronic music. The bass is precise and accurate. The Auto-On / Off works fine and he makes me happy every day. I would buy it again in any case

12.17 is a large and extremely strong Subwoofer! Besides this subwoofer even my speakers look small. In any case a purchase recommendation! This subwoofer plays down to 19 Hz which means you cannot only hear the deep bass but also feel it very strongly! Movies are now much more realistic when everything shakes :) Not recommended if you live in a rented apartment with fussy neighbours. The box is huge thus unwieldy and the subwoofer is really heavy. Purchase one and have fun: D

The 12.17 is a very good subwoofer which creates a high sound pressure and plays really precise. I mostly listen to music and use it for studio purpose. In combination with my studio monitors it creates a really flat and neutral frequency response. It was very easy to install and fits great with my monitors. I would have loved to have access to the inner DSP of the subwoofer which seems to do a really good job. Maybe that is possible in the future Otherwise a really great subwoofer.

12.17 is a large and extremely strong Subwoofer! Besides this subwoofer even my speakers look small. In any case a purchase recommendation! This subwoofer plays down to 19 Hz which means you cannot only hear the deep bass but also feel it very strongly! Movies are now much more realistic when everything shakes :) Not recommended if you live in a rented apartment with fussy neighbours. The box is huge thus unwieldy and the subwoofer is really heavy. Purchase one and have fun: D

Really a good and powerful subwoofer with good workmanship. The bass power is almost too much for a rental apartment with normal roomsize (20-30qm). For the price of 645 € an absolute purchase recommendation.

Great product! It suites seamlessly with pair of KEL LS50 Wireless and completes them in the laking sub bass. The 12.17 is set in its reference volume cutoff at 40 Hz reference EQ and completely sealed. You know that this is a great product since the bass sounds different in every recording. Recommended!

Large black and powerful! Actually theres not much more to say about my 12.17. I operate the subwoofer with a Yamaha Receiver which is a good combination. Super price / performance ratio! Highly recommended!

The sound of the XTZ 12.17 is excellent. Wonderful bass at its best! No jingle buzz or rattle. There are many possible adjustments but still they are very easy to handle. In addition to the rich bass sound we also liked the auto on/off function. Summarized the sub has an excellent finish and the sound is just pure enjoyment. We would buy it again! Therefore we can all only highly recommend the 12.17.