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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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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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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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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
| 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. |
Type Advanced YST II and QD-Bass Subwoofer
Driver 25cm(10'') cone
Dynamic Power 250 W
Frequency Response 20-160 Hz
Advanced YST Advanced YST II
QD-Bass Technology Front-firing
High-Efficiency Power Amplifier Yes
Linear Port Yes
BASS (Bass Action Selector System) Yes
Standby Power Consumption 0.3 W
Dimensions (W x H x D) 380 x 368 x 420 mm
Weight 18.5 kg
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