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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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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 AVAILABLE IN SIX COLOR FINISHES
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With the Impact-Mini you get amazing bass in a tiny cabinet that is almost the same size as the MiniVee-8, but at a very budget-friendly price. This engineering marvel is lightweight with an aluminum cone, furniture-quality cabinet finish and concentrates its 300 watts of output power in the 38 Hz to 140 Hz range. This is Velodyne's lightest weight subwoofer and includes an adjustable low pass crossover frequency so you can easily match the Impact-Mini to your satellite speakers.
Features
Compact, stylish cabinet; high-value subwoofer
6.5" active and 8" passive andonized aluminum woofers
High quality, long throw drivers
2" copper-wound voice coil for exceptional reliability
Down-firing bass radiator for more output, less distortion
"Green” MDP amp rated at 300 watts Dynamic power
User's Manual Specifications
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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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The SX-120 subwoofer was designed from the ground up by our engineers in London, with a custom-designed 8-inch driver and a powerful 70W RMS amplifier. Components were hand picked by our in-house engineers and then painstakingly voiced to provide premium sound quality
Features Rigid MDF cabinet 70W RMS amplifier 8-inch long-throw woofer Individual controls to tailor volume, crossover frequency and phase adjustment
Sensitivity 180mV for full power output Frequency response 34Hz - 150Hz Rated output power 70W Drive units 1 x 8" (203mm) long throw woofer Crossover 50 - 150Hz continuous/active Max. power consumption 100W Colour Black Dimensions (WxHxD) 300 x 300 x 310mm (11.8 x 11.8 x 12.2“) Weight 7.7kg (17lbs) |
Amplifier Output: 1000 watts (RMS) 2000 watts (Peak) Frequency Response: 16Hz to 40/160Hz variable Crossover (Low Pass): 40Hz - 160Hz Variable slope characteristic from 12 - 36dB/Octave Sub-Sonic Filter (High Pass): 16Hz - 31Hz EQ: 4 x Presets 1 x User Setting Equalisation: Graphic 9 band Equaliser ±6dB in 0.5dB steps Volume Level: -80 - 0dB (1dB increments from 0 to -30dB & 2dB increments from -31 to -80dB) Auto Sensing Input Requirements: Line Level>5mV (RMS) Variable delay time 5, 10, 15, 20, 25 & 30 minutes Variable Phase Control: 0. 45. 90, 135, 180, 225, 270 & 315º Internal Memory: 3 Independent memory locations Cabinet Specification: Sealed Cabinet with 25mm thick M.D.F construction with critical internal bracing Amplifier Classification: Class-D amplifier with DSP control Driver Complement: 1 x 15" C-CAM long throw sub-woofer driver featuring triple suspension and a 4" long throw voice coil External Dimensions - Excluding Plinth: Width: 485mm (19 inches) Height: 455mm (18 inches) Depth: 475mm (18 3/4 inches) Weight: 50 Kg (110lbs) Mains input Voltage: 100 - 240 Vac 50/60Hz (Factory Set) Trigger Input: 3.5mm Jack input, +12Vdc = On State User's Manual AVAILABLE IN THESE COLOR FINISHES
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