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.
The main product models and codes are:
KU212 black model
KU212W white model
KU212X customizable color and finish (box + grille)
new! KU212M, KU212MW, KU212MX (only RAL colors) = MARINE TREATMENT (on request)
All Rumble-KU212 components are designed by the K-array R&D department and are custom-made under the K-array quality control system in Italy.
12" neodymium magnet woofer
12" passive radiator
35 Hz – 150 Hz (-6 dB)(1)
130 dB (peak)(2)
4PIN euroblock connector (included)
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)(3)
18.5 kg (40.8 lb)
Black, White, Custom RAL
24K Gold, Polished, Brushed
- (1) With dedicated preset
- (2) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 1 m.
- (3) Removable rubber feet not included.
- (4) More complete water protection with K-KUIP12 accessory.
Passive loudspeakers requires dedicated preset loaded on board of K-array amplifiers.
New materials and design are introduced into existing products without previous notice.
KU212 User Guide
KU212 DXF 2D
KU212 DWG 3D
KU212 PDF 3D
KU212 3DS 3D
KU212 Architect Specs
files in Revit
CE Declaration of Conformity
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