Measuring a compact 14" deep and wide, the KEF R400b Subwoofer delivers a surprisingly massive low-end with an incredibly quick response. The subwoofer's twin 9" bass drivers perform with little excursion, meaning your bass frequencies hit hard and can cease instantly.
Each of the bass drivers are braced with force-cancelling technology within the cabinet to allow both drive units to operate more effectively, giving greater definition to low frequencies. The shape and bracing of the cabinet are computer optimized to minimize secondary radiation from the cabinet walls and distortion from standing waves.
The R400b's cabinet is available in either a gloss black or gloss white finish.