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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.) |
| For big sound in smaller spaces, you canʼt beat the ASW608, the most compact of the 600 Series subwoofers.
Its long-throw 200mm driver allows the ASW608 to move the large volumes of air needed for high-quality low-frequency output, and its audiophile-standard 200W Class D amplifier keeps the unit running cool, even when the music or movie action is whipping up a storm.
In all of the 600 Series subwoofers, the bass driver diaphragms are constructed from a rugged, finely-tuned mix of paper pulp, Kevlar® fibres and resin, which provides the stiffness needed to withstand the tremendous physical forces exerted by the voice coil and pressures inside the cabinet.
Ultra-solid construction delivers slamm
| Description |
Active closed-box subwoofer system |
| Drive unit |
ø200mm (8 in) paper/Kevlar® cone long-throw |
| Frequency range |
-6dB at 23Hz and 25/140Hz adjustable (EQ at A) |
| Frequency response |
±3dB 32Hz – 40/140Hz adjustable (EQ at A) |
| Bass Extension |
-6dB at 23Hz (position A) |
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-6dB at 28Hz (position B) |
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-6dB at 36Hz (position C) |
| Amplifier |
Power output: 200W |
| Rated power consumption: |
40W/ 0.5W standby |
| Input impedance: |
33kW |
| Signal / noise: |
>90dB |
| Functions: |
Volume level – line in |
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Volume level – speaker in |
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Low-pass filter frequency – line in only |
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Low-pass filter bypass |
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Bass extension |
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Bass roll-off alignment |
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Auto sense on/standby |
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Phase switch |
| Inputs: |
Line In (RCA Phono) |
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Speaker in (Binding post) |
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12v trigger (3.5mm jack) |
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Low-pass filter |
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Active 4th-order, variable cut-off frequency |
| Dimensions |
Height: 260mm (10.2 in) not including feet |
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Width: 260mm (10.2 in) |
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Depth: 330mm (13 in) including grille and controls |
| Net weight |
8.85kg (19.5 lb) |
| Finishes |
Black Ash Vinyl |
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Red Cherry Vinyl |
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Pressure vessel enclosure
500W ICEpower® amplifier
Switch mode power supply
Description Active closed-box subwoofer system
Drive unit 2x f200mm (8 in) mica / aluminium diaphragm long-throw
Frequency range -6dB at 18Hz and 40/140Hz adjustable (EQ at i)
Frequency response ±3dB 21Hz – 31/110Hz adjustable (EQ at i)
Power output: 500W
Rated power consumption: 110W (105W - 100V version)
Input impedance: 100kΩ
Signal / noise: >90dB
Functions: Volume level
Low-pass filter frequency
Bass roll-off alignment
Auto sense on/standby
Phase switch
Inputs: Line In (RCA Phono)
Speaker Level In (FCC68 4/4)
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Super-compact size
8" custom downfiring woofer
Wireless-ready!
Solid hand-finished, front-ported cabinet
Auto-sleep power saving mode
Dual line-level inputs (RCA and mini-jack)
All cables included
Excellent performance for music, movies,
and videogames
A perfect bass extension for Audioengine
powered speakers or any audio system!
Brand Name: Audioengine
Speaker Type: Subwoofer
Item Display Height: 11.3 in
Depth: 11.3 in
RMS Power Range - Speakers: 125 watts
Peak Power Handling - Speakers: 250 watts
Maximum Speaker Depth (inches): 11.3 in
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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 ![]()
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System Format: Sealed Cabinet. 25mm M.D.F construction with internal bracing. Sealed amplifier compartment
Low Frequency Limit: 18 Hz
Upper Frequency Limit: 40 - 120 Hz Variable
Low Pass Filter Alignment: Active 4th order 24dB/octave (6/12/18/24 dB user adjustable)
Amplifier Power Output 650 watts Continuous. 1200 watts (peak)
Amplifier Classification D2AudioTM* DSP controlled, Class-D amplifier system. High current switch mode power supply (smpsu)
Equalisation 4 Settings (Off/Music/Movie/Impact)
Phase Control 0-90-180-270 degrees
Auto Sensing Input Level Requirements Line Level > 2mV. Standby after 10 minutes if no signal sensed
Digital Volume Level -60 to +10dB in 1dB increments
Drive Unit Complement 1 x 15” C-CAM® sub-woofer driver featuring triple suspension
3” long throw voice coil
12V Trigger Input 3.5mm mono jack socket
Connections Stereo RCA in/out
LFE in/out
12V Trigger in (3.5mm mono jack)
LEO* - 3.5mm Microphone input jack (microphone supplied)
Input Impedance 20 kohms
Dimensions (H x W x D) 430 x 400 x 400 mm (16 15/16 x 15 3/4 x 15 3/4 Inches)
Grille Depth 28 mm (1 1/8 Inches)
Weight (unpacked) 35.3 kg (77.6 lbs)
Mains Input Voltage 100 - 120 Vac / 220 - 240 Vac 50/60 Hz (Factory preset)
Electrical Certifications CE/CB/ETL/Fcc/ErP (Energy saving compliant)
Power Consumption Maximum 1000W. Standby
Fuse Type 20mm UL/VDE (Value is region specific)
IR Remote Control Code NEC SH6122
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