A break through technology with a powerful amplifier, all built into a small enclosure providing an unbelievable experience; future is here. Place it under the seat or in the boot, this sub-woofer can fit in anywhere with its 6 cm height. Pioneer^s revolutionary technology will now change speaker designs forever. With Horizontal Vertical Transforming technology, small enclosures can create larger than life sounds by converting horizontal into vertical movements resulting in wider low range frequency reproduction. Seal of genuinity Years of research & state-of-art production facilities is our secret behind every Pioneer speaker^s quality sound reproduction. Our popularity with you have attracted cheap speakers being sold under Pioneer brand name. Use our 3-D hologram on the speaker package to identify a genuine product and safe-guard yourself from cheap fake products. Clear Sound, Less Noise Compared to a traditional subwoofer, the TS-WH500A produces less vibration and less noise. Dual driver Powered by two drivers positioned to drive two cones using the new HVT technology. Dual cone Made of a more rigid material, the smaller cone is also attached to the voice coil for improved high frequencies. Rich ultra-low bass With the new HVT technology, feel the rich ultra-low bass more vividly.