R400b Subwoofer

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  • Regular price €1.350,00
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Twin 9 inches driver 'force-cancelling' subwoofer

The R400b is just 14 inches high but with twin bass drivers and 500 Watts of power, it's made for serious home theatre systems.

The R400b's reinforced and braced cabinet houses twin 9 inches LF drivers powered by two 250 Watts class-D amplifiers. The drivers are mounted in a ‘force-cancelling’ arrangement for fast, powerful bass.


Power

Dynamic, uncompressed and undistorted bass of heart pounding clarity envelops you, striking deep emotional chords. Your soul will awaken and the earth will move.

Bass Driver

Massive, vented magnet assemblies and large aluminum voice coils drive the lightweight yet stiff, strong hybrid cones. Bass output is faster, cleaner and more accurate. Satin anodised elements contribute to the unit’s elegance, while the diameter of the trim ring accentuates a visual sophistication that belies the speaker’s awesome power.

Subwoofer

Force cancelling drivers avoid cabinet agitation. Opposing reactive forces are nullified by rigidly mounting the low frequency drivers back-to-back.

The Details

Specifications

WEIGHT

21.5kg (47.4lbs)
 
 

DIMENSION (H X W X D)

365 x 330 x 351 mm (14.4 x 13 x 13.8 in.) with terminal & plinth

 

 

DESIGN

Powered Subwoofer (Sealed)

 

Unit measurement

Piece

FREQUENCY RANGE

26Hz - 140Hz (-6dB)

 

Power consumption

600VA
 
 

Power requirements

100V - 120V / 220V - 240V
~ 50 / 60Hz
 
 

Low level signal inputs

RCA phono sockets
Speaker level inputs
 
 

MAXIMUM OUTPUT

111dB
 
 

Recommended AMPLIFIER POWER

2 x 250W (500W) built-in Class-D
 
 

Variable low pass filter

40Hz - 140Hz, 4th-order
 

DRIVE UNITS

Bass units:
LF: 2 x 225mm (9in.)
 
 

CROSSOVER FREQUENCIES

400Hz, 2.9kHz

 

 

downloads

R Series Brochure
R Series Manual
R400b Manual

KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. * Measurement per unit

Awards & Reviews

Subwoofer highly commended over $2,000

Sound+Image Awards 2013 — 2012

Home Theater Top Picks

Home Theater — 2012

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