K-array Rumble-KU44W I Compact Arrayable Passive Subwoofer

Rumble-KU44W I – Compact Arrayable Passive Subwoofer

The Rumble-KU44W I is an extremely compact, arrayable bass element designed to pair with mid-high speakers for a full-range frequency response in a discreet profile. With a frequency range of 50 Hz to 150 Hz, it features two 4″ neodymium transducers and two 4″ passive radiators engineered for maximum linear excursion and minimal residual noise.

For seamless integration with KA amplifiers, the KU44 offers selectable impedance (8 Ω / 32 Ω), allowing up to eight units to be powered from a single 4 Ω amplifier channel. Dedicated presets on K-array Kommander amplifiers ensure perfect system balance with any mid-high speaker in the K-array catalog.

Constructed entirely from stainless steel, the KU44 is highly resistant to harsh conditions and available in a marine version for aquatic environments. A range of mounting accessories makes it ideal for retail, hospitality, museums, and other spaces requiring invisible audio solutions.

Specifications

General

• Type: Passive subwoofer
• Transducers: 2 × 4″ neodymium magnet woofers + 2 × 4″ passive radiators
• Frequency Response: 45 Hz – 150 / 500 Hz (–6 dB)
• Max SPL: 116 dB (peak)
• Rated Power: 120 W
• Coverage: Omni
• Connectors: 4PIN euroblock connector (included)
• Nominal Impedance: 8 Ω / 32 Ω selectable

Handling and Finishes

• Dimensions (W × H × D): 500 × 116 × 100 mm (19.7 × 4.6 × 4.0 in)
• Weight: 5.9 kg (13.0 lb)
• Material: Stainless Steel
• Colors: Black, White, Custom RAL
• Finishes: 24K Gold, Polished, Brushed