Monitor Audio Radius 720 Super Subwoofer

Monitor Audio introduced an addition to their Radius line of subwoofers : Radius 720. HiFiBitZ has not been happy with Radius 320, the previous model from the lineup and they hope 720 will be an improvement.
Radius 720 is designed as a twin downward-firing with two 8-inch treated paper cone drivers are mounted within a ported enclosure. Built-in amplifier shoots 250 watt. This subwoofer also features automatic power functionality that shuts the unit if there is no signal for 15 minutes. There is of course automatic power up as well when signal detected. Crossover control range is 40Hz -180Hz.
Price of the subwoofer is £500 ( about $800 )

Source: HiddenWires