The Rumble-KU26 is a very powerful bass element consisting of a 6" neodymium magnet woofer and a 6" passive radiator designed 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 the user to combine up to 8 KU26 units powered by only one KA84 amplifier channel. Made entirely of stainless steel, the KU26 is extremely durable even when deployed outdoors in harsh weather conditions. This is ideal for seaside environments where ordinary woofers can corrode. A wall mount is included, while other useful tools can also be purchased, such as the flush-mount flush frame K-WF26, for further concealment of the subwoofer.