KEF R400(black-white)

KEF R400b Subwoofer

At just 31 inches square, the KEF R400b may be compact, yet it packs an incredible punch. With a reinforced and braced sealed cabinet, the R400b houses twin 9-inch LF drivers powered by twin 250W class-D amplifiers. The drivers are mounted back-to-back, to create ‘force cancelling’. This means the opposing reactive forces are nullified, resulting in no cabinet agitation and a clean, fast, powerful bass performance – perfect for any serious home theatre system.

Model                                                                   R400b

Design                                                                 Powered Subwoofer (Sealed)

Drive Units                                                         Bass units:

LF: 2 x 225mm (9in.)

Frequency range (-6dB)                                                26Hz - 140Hz

Maximum output                                                            111dB

Amplifier                                                            2 x 250W (500W)

built-in Class-D

Low pass filter Variable                                                40Hz - 140Hz, 4th-order

Low level signal inputs                                 RCA phono sockets

Internal volume                                                               22 litres

Power requirements                                     100V - 120V / 220V - 240V

~ 50 / 60Hz

Power consumption                                       600VA

Weight                                                                 21.5kg (47.4lbs.)

Dimension (H x W x D)

(with grille, terminal & plinth)                365 x 330 x 351 mm

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