The midsize Kube 10b has a closed enclosure, a 10-inch basdriver and 300 watt amplifier to provide a fully controlled wide layer view. The latest addition to KEF' s powerful array of subwoofers opens up the hidden depths of the sound thanks to 300 W class D-capability, integrated with a 10-inch driver and iBX dynamic base extension technology. Hear new dimensions in view with Kube subwoofers The Kube 10b unleashes effortlessly explosive power. iBX technology dynamically expands the layer view and the unique power of KEF to design, build and integrate the driver internally, it brings optimization to a whole new level. It's a compelling music and home theater sound that takes you to the very heart of the show. Immersion Go deep or go home. KEF' s design and engineering team worked together to develop iBX. This Intelligent Bass Extension algorithm creates a wider depth that unlocks the full potential of the specially designed bass unit. Gives you an unparalleled precision and ultimate synchronicity between amplifier, driver, and closed enclosure. Simple configuration Kube subwoofers offer unparalleled flexibility and fits optimally in every imaginable music system: a range of LFE, line-and- speaker-level entries, phase selection, and DSP-controlled EQ settings will help you get the best out of a Kube. Set the sub at one for you convenient place and start by exploring new depths in view. Integration KEF is possibly the only high-end speaker manufacturer that designs, engineer, and assembles the driver, housing, and circuits in his own home. This integration level means that we are dedicated to pure sound and that the Kube faithful stay on to that ideal. The result is a driver, enclosure, and amplifier that are perfectly matched.