UPC 637203208201

• The R400b uses two ultra-low distortion 9 inches bass drivers, each 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.
• Measuring a compact 14 inches deep and wide, the R400b delivers a surprisingly massive low-end with an incredibly quick response.
• Frequency Range-26Hz - 140Hz . Power requirements-100V - 120V / 220V - 240V, 50 / 60Hz

If you're looking for premium speakers to fill your home theater and handle a variety of musical genres, you can't do much better than the KEF R Series. Transparent. Well-rounded. Superb rendering and imaging at all volume levels. A powerful-yet-compact subwoofer. states High-Def Digest in a May 2016 review of the R400b. Measuring a compact 14 inches deep and wide, the R400b delivers a surprisingly massive low-end with an incredibly quick response. The subwoofer's twin 9 inches bass drivers perform with little excursion, meaning your bass frequencies hit hard and can cease instantly.