The Rumble-KU26 is an extremely powerful, bass element comprised of one 6” neodymium magnet woofer and one 6” passive radiator engineered for maximum linear excursion and minimum residual noise. The woofer has a dual voice coil (16+16 Ω) for selectable impedance settings (8/32 Ω) allowing users to combine up to eight KU26 units powered by just one KA84 amplifier channel.

KU26 is made entirely of stainless steel, making it extremely resistant, even when deployed outside in tough weather conditions. This is ideal for water-front environments where ordinary bass speakers would corrode. Wall brackets are included while other useful tools are available for purchase, like the flush mount recessing frame, K-WF26, used to further hide the subwoofer



Type : Passive subwoofer 

Transducers : 6" neodymium magnet woofers / 6" passive radiator 

Frequency Response (1) : 45 Hz – 150 Hz (-6 dB)  

Maximum SPL (2) : 121 dB peak

  • Rated Power : 160 W
  • Coverage : Omni
  • Connectors : 4PIN euroblock connector (included)
  • Nominal : Impedance8 Ω / 32 Ω selectable


Dimensions (W x H x D) : 350 x 180 x 118 mm (13.8 x 7.1 x 4.6 in) (3) 

Weight : 5,9 kg (13.0 lb)  

Material : Stainless Steel 

Color : Gold, Polished, Brushed 


IP Rating : IP64(4)

Notes for data:

(1) With dedicated preset

(2) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 8 m then scaled at 1 m

(3) Removable rubber feet not included.
(4) More complete water protection with K-KUIP accessory.