Kube12b Subwoofer

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  • Regular price HK$6,580

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      12 inches bass driver active subwoofer

      The Kube12b is engineered to deliver the deepest bass for music and movies, if you want to feel the earth move look no further. Perfect for creating a deep and clean rumble in large rooms. The Kube 12b has a 300 Watts Class D amplifier and a large 12 inches driver as well as iBX technology to dynamically extend bass depth.

      Hear new dimensions in sound with Kube subwoofers

      The Kube 12b effortlessly unleashes explosive power. iBX technology dynamically extends bass depth and KEF’s unique ability to design, build and integrate the driver in-house takes optimisation to a whole new level. Delivering immersive music and home theatre sound that takes you to the heart of the performance.
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      Go deep or go home. KEF’s design and engineering team worked in chorus to develop iBX. This Intelligent Bass Extension algorithm creates an extended depth that unlocks the full potential of the custom driver. Giving you unparalleled precision and ultimate synchronicity between amplifier, driver and sealed cabinet.
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      Easy configuration

      Kube subwoofers offer unmatched set up flexibility. A range of LFE, line and speaker-level inputs, phase selection and DSP controlled EQ settings help you get the best from a Kube. Put it in a convenient position, match it to any main speaker or type of music system, and start exploring new depths in the sound.
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      KEF is quite possibly the only high-end manufacturer that designs, engineers and assembles the driver, cabinet and circuitry in-house. This level of integration means we are commited to pure sound and the Kube stays true to that ideal. The result is a driver and amplifier that are perfectly in tune.

      The Details


      accordion open
      (with Rear panel and feet / H x W x D)
      410 x 393 x 410mm (16.1 x 15.5 x 16.1in.)
      Powered Subwoofer (sealed)
      Power Requirements
      100V - 120V / 220V - 240V ~ 50 / 60Hz
      Unit Measurement
      Variable Low Pass Filter
      40Hz - 140Hz & LFE
      Frequency Response
      22Hz - 140Hz (±3dB)
      Maximum Output
      Recommended Amplifier Power
      300 Watts RMS
      Amplifier Type
      Built-in Class-D
      Drive Units
      1 x 300mm (12in.)
      RCA phono sockets Speaker level inputs
      Analogue Input
      RCA phono sockets Speaker level inputs
      KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.. * Measurement per unit

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