I had been a great bass box with amplifier in the trunk of my Audi A3. That reminds me, however, took away too much space, I decided to buy a little smaller. It should be a Aktivwoofer suits even under the driver's or passenger seat. After some much my decision the ratings Browse to the Pioneer TS-WX 120 since true very positive. Shipping was fast and reliable. Package was there within 2 days. Installation is relatively fast by the hand, when you have done something like this before. The only problem emerged when installing the wiring harness on because the power cable fuse is attached and it is so difficult to come up from the battery in the vehicle interior. With a little trick hats but then folded. Can of course be auto car different because I found no big opening in the vehicle interior. Further installation went smoothly. Connect all cables, and then it could assail. And I must say this little box makes a good impression. Sure, you can not compare it with a big bass box but it improves the sound in combination with the standard loudspeakers enormously. Thanks to the wired remote control, you can at any time adjust bass intensity and the frequency just as desired. Overall, the value for money is great and the subwoofer would any friend. Super sound !!