At just 14 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.
Thông số kỹ thuật:
Thông số kỹ thuật:
Design:
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Powered Subwoofer (Sealed)
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Drive Units:
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Bass units: LF: 2 x 225mm (9in.)
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Frequency range:
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26Hz - 140Hz (-6dB)
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Maximum output:
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111dB
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Amplifier:
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2 x 250W (500W) built-in Class-D
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Low pass filter Variable:
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40Hz - 140Hz, 4th-order
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Low level signal inputs:
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RCA phono sockets
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Internal volume:
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22 litres
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Power requirements:
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100V - 120V / 220V - 240V ~ 50 / 60Hz
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Power consumption:
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600VA
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Dimension (W x H x D):
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330 x 365 x 351 mm
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Weight:
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21.5 kg
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