K-Array Rumble KU315W Ultra-slim, 4Ω polyurea-coated birch plywood passive subwoofer with 1x15" woofer and 2x15" passive radiators (White)

K-Array SKU: KU315W
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The Rumble-KU315 is the most powerful passive subwoofer in the Rumble series, with a nominal rated power of 2000 W at 4 Ω. Made from water-resistant polyurea-coated birch plywood, this ultra-thin subwoofer features a 1x 15" neodymium transducer in a shallow and relatively slim box and is certified for marine applications.

Unlike other subwoofers, the KU315 doesn't have reflex openings but instead features two more 15” passive radiators that ensure the transducer excursion is as linear as possible with minimum residual noise. This design, along with durable materials and an upgrade to the SpeakOn NL4 connector, makes the Rumble-KU315 resistant to tough weather conditionsand suitable for outdoor installations.

K-array’s Kommander amplifiers are the perfect choice for powering any Rumble subwoofer, capable of balancing all the settings needed to match any mid-high speaker in the K-array catalog. With dedicated presets, integrators can find complete solutions within the same range of products. The KU315's extended frequency response, prodigious output and discrete form factor make it ideal for medium and large-format projects like clubs, lounges, theaters, cinemas, and auditoria. 

Measuring 123 x 45 x 25 cm (48.4 x 17.7 x 9.8 in) and weighing 40 kg (88.18 lb), the KU315 is available in black or white and can be customized in any RAL colour to blend seamlessly into a variety of environments.


  • Type:  

    Passive subwoofer

  • Transducers:  


    15” neodymium magnet woofer
    2 x 15” passive radiator


  • Frequency Response:  

    35 Hz – 150 Hz (-6 dB)

  • Max SPL:  


    137 dB (peak)


  • Rated Power:  


    2000 W


  • Coverage:  


  • Connectors:  


    1x SpeakON NL4
    1+ 1-


  • Nominal Impedance:  


    4 Ω


Handling and Finishes

  • Dimensions (W x H x D):  


    1230 x 450 x 250 mm (48.4 x 17.7 x 9.8 in)


  • Weight:  


    40 kg (88.18 lb)


  • Material:  


    polyurea coated birch plywood


  • Colors:  

    Black, White, Custom RAL

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

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