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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.) |
| Hxείο Sub, high Fidelity, 300 Watts Continuous Program Power (2 hrs) 150 Watts ContinuousPink Noise (2 hrs)200 Watts Continuous Program Power (100 hrs) 100 Watts Continuous Pink Noise (100 hrs), 115dB average, 121dB peak (near corner) 109dB average, 115 dB peak (center of wall) 32 Hz ? 200 Hz +-3dΒ Eπιλογή λειτουργίας 70/100v/, 80W, 40W, 20W, (& 10W @ 70V), 8 ohm bypass/thru, με 1 woofer 200 mm (8 in) με polypropylene cone, ανάρτηση butyl rubber, με πηνίο φωνής 38 mm (1.5 in) 4-layer copper-clad, και αεριζόμενο former αλουμινίου. Διαστάσεις: 356 x 391 x 203 mm. Περιέχεται βάση στήριξης. Χρώμα Μαύρο-Λευκό. Μπορεί να λειτουργήσει με 2 ή 4 δορυφόρους ?ηχεία, και σε συνδυασμό με ηχεία οροφής της σειράς 40 της JBL. Βάρος 9kg. |
Dimensions | Metric :12” W x 17-7/8” D x 14-7/16” H | 30.5 x 45.4 x 36.7 cm
Driver Complement :One high-definition 10" woofer pressure coupled to one 10" low bass radiator.
Frequency Response :18Hz – 150 Hz
Internal Amplifier Power :300 watts
Auto On / Off :Signal Sensing (US) | Signal Sensing and Switched (International)
Power Requirements :110 volts Alternating Current (US) | 220 volts Alternating Current (International)
High Level Inputs :Two pairs of 5 way binding posts
High Level Outputs :Two pairs of 5 way binding posts
Low Level Inputs :One LFE input (for SW preout only)
High Pass Crossover :Non Variable 6 dB/octave @ 80 Hz: Available only with high level inputs and outputs
Low Pass Crossover% :24 dB/octave, continuously variable from 40 Hz – 150 Hz: Available with high level inputs only
Available Finishes :Matte Black
Fuse :3.2 amp 250 volt Slo Blo (US) | 2 amp 250 volt Slo Blo (International)
Packaging :One to a carton
Weight | Metric :31 lbs | 14.1 kg
Warranty :5 Years; 3 Years for Amplifiers
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Low Frequency Limit: 27Hz (EQ1) 21Hz (EQ2)
Upper Frequency Limit: 40 - 120Hz Variable
Power Output: 500W RMS (1000W Peak)
Low Pass Filter Alignment: Active 4th order 24dB/Octave (2nd stage filter)
Cabinet Specification: 25mm construction and internal bracing
Cabinet Alignment: sealed cabinet
Driver Complement: 1 x 12" C-CAM® sub woofer driver featured triple suspension and ling throw 3" voice coil
External Dimensions:
(H x W x D)
inc. amp & driver 340 x 340 x 410 mm
(13 3/8 x 13 3/8 x 16 1/8 inch)
External Dimensions:
(H x W x D)
inc. feet & grille 375mm (15“) high with feet
430mm (16 15/16“) deep
inc amp & grille
Mains Input Voltage Specification: 110 - 120 Vac / 220 - 240 Vac 50/60Hz
Individual Weight: 22.56 Kg (49.63 lb)
User's Manual
ΔΙΑΤΙΘΕΤΑΙ ΣΤΑ ΠΑΡΑΚΑΤΩ ΧΡΩΜΑΤΑ
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Crossover Tuning
Mushrooms
Description Active closed-box subwoofer system
Drive unit ø250mm (10 in) paper/Kevlar® cone long-throw
Frequency range -6dB at 18Hz and 25/140Hz adjustable (EQ at A)
Frequency response ±3dB 25Hz – 40/140Hz adjustable (EQ at A)
Bass Extension -6dB at 18Hz (position A)
-6dB at 23Hz (position B)
-6dB at 28Hz (position C)
Amplifier Power output: 500W
Rated power consumption: 98W / 1W standby
Input impedance: 33kΩ
Signal / noise: >90dB
Functions: Input level (line in)
Input level (speaker in)
Low-pass filter frequency (line in only)
Low-pass filter bypass
Bass extension
Bass roll-off alignment
Auto sense on/standby
Phase switch
Inputs: Line In (RCA Phono)
Speaker in (Binding post)
12v trigger (3.5mm jack)
Low-pass filter
Active 4th-order, variable cut-off frequency
Dimensions Height: 325mm (12.8 in) not including feet
Width: 325mm (12.8 in)
Depth: 375mm (14.8 in) including grille and controls
Net weight 15.5kg (34.4 lb)
Finishes Matte Black
| 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) |
|
-6dB at 28Hz (position B) |
|
-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 |
|
Volume level – speaker in |
|
Low-pass filter frequency – line in only |
|
Low-pass filter bypass |
|
Bass extension |
|
Bass roll-off alignment |
|
Auto sense on/standby |
|
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 |
|
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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