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KEF R400b Subwoofer
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 ʽforce cancellingʼ. 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
Speaker level inputs | | 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 terminal & plinth) | 365 x 330 x 351 mm
(14.4 x 13 x 13.8 in.) |
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A subwoofer designed specifically to shine alongside the rest of the BMR-driven Aero speakers, it adds phenomenal amounts of depth and power to your music and movies.
Features
500W power
10" front-firing subwoofer driver
10" down-firing ABR (Auxiliary Bass Radiator)
Premium construction
Rated output power 500W
Frequency response 21Hz - 200Hz
Drivers 1 x 10" (250mm) front-firing subwoofer
1 x 10" (250mm) down-firing ABR
Crossover Active - variable 40Hz - 200Hz
Colour Black
Dimensions (WxHxD) 330 x 340 x 355mm (13.0 x 13.4 x 14.0“)
Weight 11.7kg (25.8lbs) each
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Technical features 500W class 'D' power amplifier
Description Active closed-box subwoofer system
Drive unit 1x f250mm (10 in) paper / Kevlar® cone long-throw
Frequency range -6dB at 18Hz and 40/140Hz adjustable (EQ at A)
Frequency response ±3dB 25Hz – 40/140Hz adjustable (EQ at A)
Power output: 500W
Rated power consumption: 94W
Input impedance: 33kΩ
Signal / noise: >80dB
Functions: Input Level (line in)
Input Level (speaker in)
Low-pass filter frequency
Low-pass filter bypass (line in only)
Bass extension
Bass roll-off alignment
Auto sense on/standby
Phase switch
Inputs: Line In (RCA Phono)
Speaker Level In (Binding post)
Low-pass filter Active 4th-order, variable cut-off frequency
Height: 325mm 12.8 in)
Width: 325mm (12.8 in)
Depth: 362mm (14.3 in)
Net weight 15.5kg (34.4 lb)
Cabinet Gloss Black
AVAILABLE IN gloss black,wenge,rozenut COLORS
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With the down-firing port on the Impact-10, you get more bass output with less distortion than other companies' subwoofers that cost about the same. With its 250 Watts of amplifier power generating bass in the 32 Hz to 140 Hz spectrum, you get powerful output even in our entry-level subwoofer. Using the adjustable low-pass crossover frequency feature, you can blend the Impact-10 with your home theater satellites, gaming system or music speakers. The Impact-10's attractive black ash wood grain colored cabinet with black gloss trim complements your decor.
Features
Compact, stylish cabinet; high-value subwoofer
10" forward firing coated fiber woofer
Down-firing port minimizes distortion
2" copper-wound voice coils for exceptional reliability
"Green” MDP amp rated at 250 watts Dynamic power
![acrobat_reader_logo.]( "acrobat_reader_logo.") User's Manual ![acrobat_reader_logo.]( "acrobat_reader_logo.") Specifications ![]()
| Amplifier Output: 500 Watts (RMS) 1000 Watts (Peak)
Low Frequency Limit 27Hz (EQ1) 21Hz (EQ2)
Upper Frequency Limit 40 - 120Hz Variable
Variable Low Pass Filter Alignment Active 4th order 24dB/octave (two-stage filter)
Cabinet Specification: Sealed Cabinet with 25mm M.D.F construction and internal bracing.
Amplifier Classification: Class-D amplifier
Driver Compliment: 1 x 12" C-CAM® sub-woofer driver featuring triple suspension and 3" long throw voice coil.
Dimensions:
(H x W x D) 340 x 340 x 410 mm
(13 3/8 x 13 3/8 x 16 1/8 inch)
Weight: (unpacked) 22.56Kg (49.63lbs)
Mains Input Voltage: 100 - 120 Vac, 220 - 240 Vac, 50/60Hz
Input Impedance 20Kohms
User's Manual
ΔΙΑΤΙΘΕΤΑΙ ΣΤΑ ΠΑΡΑΚΑΤΩ ΧΡΩΜΑΤΑ
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Product Series Subwoofers
Speaker Type Subwoofer
Frequency Range (+/-3 dB) [Hz] 28 - 190
Maximum SPL [dB] 112
Crossover Frequency [Hz] 40 - 120 Hz
Low Frequency Driver 1 x 12" long stroke Polymere Aluminimum
Enclosure Type Bass Reflex
Bass Reflex Tuning Frequency [Hz] 36.0
Max. Amplifier Power Output [RMS watt] 220
Continous IEC Power Output [RMS watt] 170
Input Impedance [Ω] 25K
Connection input(s) Mono line level (LFE)
Stereo line level (low pass filtered)
RCA
Magnetic Shielding No
Recommended Placement Floor
Near wall or corner
Recommended Distance From Wall [cm] > 5
Functions Crossover Frequency
Phase Switch
Standby (Auto Power) On/Off Switch
Volume (Gain)
Maximum Power Consumption [W] 250
Max. Dimensions Incl. Base And Grille (HxWxD) [mm] 370 x 340 x 380
Weight [kg] 14.7
Accessories Included Manual
Rubber Bumpers
Spikes M6
Finish Black Ash Vinyl
Light Walnut Vinyl
White Vinyl
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