Extremely compact subwoofers


Extremely compact subwoofers

Ultra-compact, yet powerful bass systems engineered for maximum linear excursion and minimum residual noise that boast extended low-frequency response. The use of passive radiators, rather than having reflex openings, makes any Rumble subwoofer completely sealed off from foreign objects and particularly suitable for outdoor applications.

Rumble was made to fit elegantly into any application to create extremely powerful bass systems.

Engineered to hide from sight without compromising on high-quality audio performance.

The subs are made entirely of steel, making them extremely resistant, even when deployed outside in tough weather conditions. This is ideal for water-front environments where ordinary bass speakers would corrode. They are impenetrable by foreign objects and agents like dust, sand or water, which can damage an ordinary audio element over time

The Rumble line is the perfect companion to the K-array Lyzard, Vyper, Tornado and Anakonda speakers.


The combination provides full-range frequency response with exceptional output and a virtually invisible profile. The subwoofers, KU26, KU44, KU210 and KU212, all boast extended low-frequency response and are electronically protected.

A variety of dedicated hardware accessories provide designers with numerous mounting options for permanent and portable installations. Rumble is best suited for theaters and other venues where invisible line arrays are ideal. Other applications vary from hotels and churches to pubs and restaurants as well as stores and conferences.

Rumble is available in
black or white
with the option for custom RAL or Premium Finishes

Rumble is available in
black or white
with the option for Custom RAL or Premium Finishes


Similar to high-end fashion accessories and jewelry, our products undergo the most advanced coating process for a more beautiful and lustrous look.


We have the ability to customize your project by color matching your system to any RAL code to help you to better integrate the speakers into a wide variety of venues.


We have developed and refined a customized finishing for Marine applications.
The finishing can resist bad weather and oxidation caused by salt water.

Visually Discreet

For architectural reasons, a visually discreet audio system may be required to integrate seamlessly with the layout without compromising sound quality.

Weather Resistant

We are aware of using  the most durable and resistant materials when developing our products to protect and conserve the system regardless of the elements, rendering a K-array installation reliable and long-lasting.

Project and Applications