Check the listing for details. K-Array Rumble-KU26 Stainless Steel Compact Passive Subwoofer (Black). Condition: Used. Listed at 1000.00 USD. The Rumble-KU26, the smallest sub in K-Array's portfolio, is an extremely powerful, bass system comprised of one 6" neodymium transducer and one 6" passive radiator engineered for maximum linear excursion and minimum residual noise. With a frequency range of 45 Hz to 150 Hz, the Rumble-KU26 is a companion to the Lyzard, Vyper, Tornado and Anakonda speakers. The combination provides full-range frequency response with prodigious output in a virtually invisible profile. The Rumble-KU26 boasts extended frequency response and is electronically protected. Its neodymium transducer has a dual voice coil (16+16 ?) for selectable impedance settings (8/32 ?) allowing you to combine up to eight Rumble-KU26 units powered by just one Kommander-KA84 amplifier channel. Visually Discreet For architectural reasons, a visually discreet audio system may be required to integrate seamlessly with the layout without compromising sound quality. Color Customizable We have the ability to customize your project by color matching your system to any RAL code to help you to better integrate the speakers into a wide variety of venues. Premium Finishes Similar to high-end fashion accessories and jewelry, our products undergo the most advanced coating process for a more beautiful and lustrous look. Weather Resistant We utilize the most durable and resistant materials when developing our products to protect and conserve the system regardless of the elements, rendering a K-array installation reliable and long-lasting. Selectable Impedance Selectable impedance lets the user to choose the right loudspeaker impedance value allowing to set the proper load and maximize performance.