KEF R400b R-Series Subwoofer

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Boxed Weight: 22 Kg
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Delivery Restrictions: None
On Demonstration?: Yes - Call us to arrange

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Product Information

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.

Priced Individually

KEF R400b Subwoofer Specifications

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 (14.4 x 13 x 13.8 in.)