Rumble KU44 - Line array bass element | Invisible professional sub

Features and Information

Ideal for line array configurations
2 x 4” long excursion woofers
2 x 4” passive radiators
Double voice coil to allow for selectable impedance (8Ω / 32Ω)
Weather resistant, suitable for outdoor installations- IP54



The Rumble-KU44 line array bass element is an extremely compact, array-able sub designed to combine with mid-high speakers to provide a full range frequency response with prodigious output in a virtually invisible profile.

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This professional sub is the ideal o extend the low range in small and medium rooms.

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This high performance subwoofer is the perfect companion to any of the K-array professional Installed Sound series.

Colors & Finishes

The appropriate attire for every occasion

Electr Prot

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Paint the sound!

Black and white are the standard colors of K-array pro audio speakers and subwoofers but you are able to customize them by selecting one of the colors in the RAL palette.

This is the perfect way to match products with the architecture and design of your venue, or just to fully express your unique personality and attitude. The extensive RAL chart gives you the possibility to find the color that best fits your preferences - a specific shade for your system to make them unique or ultra-bright.

Your color choice not only affects the aesthetic appearance: colors can also affect and represent an array of moods, emotions, perceptions and sensations. So appeal to your customers’ senses and make it original!


Sparkles all around!

Any of our elegant finishes developed from unique treatments will provide a distinctiveness and allure to accommodate even the most demanding tastes.

Premium brushed or polished stainless steel finishes are available to give speakers and subwoofers the chameleon-like ability to reflect their surroundings and blend in with the background.

Conversely, a gold audio solution will radiate throughout the venue like your very own star. The 24 kt gold plated stainless steel finish is a combination of technical expertise, quality design and high-caliber aesthetics guaranteed to make everything around it shine.


Customer Applications

The various ways this product have been implemented by people who chose it

Broadcast & Studios




Corporate/Education auditoriums | Government facilities








Stadiums | Sport venues


Theaters | Concert halls


Theme parks


Transport facilities


Rumble-KU44 in Action

Scroll through to read about our impressive installs worldwide

Transform your setup

Click to learn how the many dedicated accessories can enhance your setup

Support & Download

Download the manual and supporting tools for the product

Spare Parts

Does your product need repair ?