K-array Rumble-KU44-2 I – Ultra-Slim Passive Subwoofer
The Rumble-KU44-2 I is an ultra-slim, line-array passive subwoofer designed for seamless integration with K-array mid-high speakers. It delivers deep bass in a discreet profile, ideal for professional installations indoors or outdoors. This 2 Ω version allows chaining multiple units for flexible, power-efficient setups.
Features
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Configuration: 2× 4″ active neodymium drivers + 2× 4″ passive radiators for extended excursion
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Frequency Range: 50 Hz–150 Hz (–10 dB), optimized for line-array setups
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SPL Performance: Up to ~121 dB peak
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Impedance: 2 Ω (KU44-2 I), also available in 8/32 Ω variants
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Build & Durability: Stainless steel construction; IP54 rated with accessory; marine-treated version available
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Mounting & Finish: Ultra-thin (46 mm); customizable in black, white, or any RAL color
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Connectors: Phoenix-style connector for secure installation
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Use Cases: Perfect for theatres, retail, hospitality, houses of worship, and outdoor venues
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System Integration: Compatible with K-array Kommander amplifiers (KA14, KA24, KA84) using built-in presets
Combining power, scalability, and elegance, the Rumble-KU44-2 I is the ideal choice for discreet yet impactful low-frequency reinforcement in professional audio environments.
