K-Array Rumble KU212 Ultra-slim, 4/16Ω stainless steel passive subwoofer with 2x12" cones (Black)

K-Array SKU: KU212
No reviews

Sale price$3,360.00


The Rumble-KU212 is an ultra-thin, high-power passive subwoofer designed as the perfect companion to the K-array’s mid-high speakers. A combination of extended frequency response with prodigious output and a discreet form factor make the KU212 an ideal solution for complex medium and large-format projects like bars, lounges, home cinemas, and small clubs. One of the largest subwoofers of the K-array’s Rumble line, it is comprised of a 12” neodymium transducer combined with a 12” passive transducer that makes it impenetrable by foreign objects such as dust, sand or water, which over time can ruin a speaker. The KU212 is made entirely up of steel, making it extremely resistant, even when deployed outside in tough weather conditions. All these properties make it ideal for aquatic environments where ordinary bass speakers would get damaged in a short time. On request, the Marine version features even higher treatments against salt corrosion.

KU212’s neodymium transducer has a double voice coil for two selectable impedance settings (4-16 Ω ), allowing you to combine up to 4 units powered by the same amplifier channel at 4Ω. By recalling the dedicated preset, the K-ARRAY Kommander amplifiers are the best electronics to run any Rumble subwoofer, capable to balance perfectly all the settings you need to match with any mid-high speaker of the K-ARRAY’s catalog. This helps integrators to find their complete audio solutions in the same wide range of products.
Measuring 65,0 cm x 33,0 cm x 20,0 cm (25.8“ x 13.0” x 7.9“) and weighing 18kg, the KU212 is c, making it easy to blend in or grab attention - depending on your aim - in a variety of spaces. 


  • Type:  

    Passive subwoofer

  • Transducers:  

    12" neodymium magnet woofer
    12" passive radiator

  • Frequency Response:  

    35 Hz – 150 Hz (-6 dB)

  • Max SPL:  

    130 dB (peak)

  • Rated Power:  

    700 W

  • Coverage:  


  • Connectors:  

    4PIN euroblock connector (included)

  • Nominal Impedance:  

    4 Ω / 16 Ω selectable

Handling and Finishes

  • Dimensions (W x H x D):  


    655 x 330 x 200 mm (25.8 x 13.0 x 7.9 in) 


  • Weight:  

    18.5 kg (40.8 lb)

  • Material:  

    Stainless Steel

  • 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.

Customer Reviews

Be the first to write a review

Nationwide Audiovisual Services - Design, Installation & Support - A Partner You Can Trust

Creation Networks offers audiovisual & video conferencing services for projects of all sizes - from a single meeting room to a nationwide deployment. You can count on us for your audiovisual technology system's design, configuration, programming, installation, and support. It is important that you get Top Quality products from the best manufacturers, and then purchase from a trusted partner who tests and installs what they sell, giving you the best value. Our goal at CreationNetworks.net is to only represent the top products and test everything before recommending or selling our solutions.


Our AV experts have earned their professional certifications to design, build, and manage the best AV services for you. View Our Certifications

Product Selection

Choose from products and national brands to find the right technology for your needs. View Our Vendor Partners