Rumble-KU212

The Rumble-KU212 is an ultra-thin, high-power passive subwoofer designed to complement K-array mid-high speakers. Combining an extended frequency response with powerful output and a discreet design, the KU212 is ideal for complex medium and large-format projects such as bars, lounges, home cinemas, and small clubs.

Sealed & Weather-Resistant Design

As one of the largest subwoofers in the K-array Rumble line, the KU212 features a 12” neodymium transducer paired with a 12” passive radiator. This design keeps the unit completely sealed, making it impermeable to dust, sand, and water, which can degrade conventional speakers over time. Constructed entirely from stainless steel, it is highly resistant to corrosion and can withstand harsh outdoor environments. The Marine version is available upon request, offering enhanced protection against saltwater damage.

Selectable Impedance & Seamless Integration

The KU212’s neodymium transducer features a double voice coil with selectable impedance settings of 4Ω or 16Ω. This allows up to four units to be powered by a single 4Ω amplifier channel. The dedicated presets for K-array Kommander amplifiers ensure perfect balance with any mid-high speaker in the K-array catalog, simplifying system integration and enhancing performance.

Compact & Customizable

Measuring 655 x 330 x 200 mm (25.8 x 13.0 x 7.9 in) and weighing 18.5 kg (40.8 lb), the KU212 is compact yet powerful. It is available in black or white and can be customized in any RAL color. Premium finishes such as brushed or polished steel, 24K gold, rose gold, and antique gold plating are also available, allowing seamless integration into any environment.

Available Models

• KU212: Standard black model
• KU212W: Standard white model
• KU212X: Customizable color and finish (box + grille)
• KU212M, KU212MW, KU212MX: Marine-treated version (only RAL colors, on request)

Specifications

• Type: Passive subwoofer
• Transducers: 12" neodymium magnet woofer, 12" passive radiator
• Frequency Response: 35 Hz – 150 Hz (-6 dB) (1)
• Max SPL: 130 dB (peak) (2)
• Rated Power: 700 W
• Coverage: Omnidirectional
• 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) (3)
• Weight: 18.5 kg (40.8 lb)
• Material: Stainless Steel
• Colors: Black, White, Custom RAL
• Finishes: 24K Gold, Polished, Brushed

Regulations

• IP Rating: IP64 (4)

(1) With dedicated preset

(2) Maximum SPL is calculated using a signal with crest factor 4 (12 dB) measured at 1 m.

(3) Removable rubber feet not included in the measurements.

(4) Enhanced water protection available with the K-KUIP12 accessory.

Passive loudspeakers require a dedicated preset loaded on board of K-array amplifiers.

New materials and designs may be introduced into existing products without prior notice.

Documents 

Click here to view the Technical Data