KEF Kube 12B Black Subwoofers.

Now in stock. 

Product info:

• frequency response: 22-140 Hz (-6 dB)
• built-in Class D amplifier delivers 300 watts RMS of continuous power
• custom-designed 12" woofer
• acoustic suspension (sealed) cabinet design
• iBX (Intelligent Bass Extension) digital signal processing provides deep, dynamic bass at any listening level
• 3 placement presets (free-standing, in-cabinet, or corner) let you choose your sub's location for optimal bass performance
• variable low-pass crossover (40-140 Hz)
• phase control switch (0°/180°)
• line-level/LFE RCA inputs
• main power on/off switch plus auto standby/on mode
• detachable power cord
• 15-1/2"W x 16-1/8"H x 16-1/8"D
• weight: 45.5 lbs.
• warranty: 5 years woofer, 2 years amplifier
• 60-day returns