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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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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) |
Description Active balanced-drive closed-box subwoofer system
Drive units 2x Ø300mm (12 in) Rohacell® cone long-throw
Frequency range -6dB at 15Hz and 250Hz
Frequency response ±3dB 17Hz - 145Hz
Power output: 1000W
Rated power consumption: 135W
Standby power Consumption: 100dB
Functions: 5 Presets
Input sensitivity
Gain
Low-pass filter
Graphic equalisation
Room compensation
Auto on/standby
Trigger on/standby
Trigger preset switching
RS-232 automation control
Inputs: Stereo Line In (2x RCA Phono)
Mono (LFE) Line In (RCA Phono)
Mono (LFE) Line In (XLR balanced)
Dimensions Height:490mm (19.3 in) not including feet
Width: 460mm (18.1 in) including grilles
Depth: 410mm (16.2 in) including controls
Net weight 44kg (97 lb)
Cabinet finish Gloss Black
Cherrywood
Rosenut
Grille Black cloth
ALSO AVAILABLE IN Cherrywood, rosenut
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Impact Series: High Performance, High Value Subwoofers
The down-firing port on the Impact-12 gives more bass output with less distortion than similarly priced subwoofer from other companies. With its 275 watts of amplifier focused on the 29 Hz to 140 Hz frequencies, you get a ton of bass for you dollar. You can blend the Impact-12 with your satellite speakers using the adjustable low pass crossover frequency feature. All this great sound is wrapped up in an attractive black ash wood grain colored cabinet with black gloss trim.
Features
- Compact, stylish cabinet; high-value subwoofer
- High quality, long throw drivers
- 12" forward firing coated fiber woofer
- Down-firing port minimizes distortion
- 2" copper-wound voice coils for exceptional reliability
- “Green” MDP amp rated at 275 watts Dynamic power
| Length |
No |
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| Accessories |
N/A |
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| Amplifier |
165 watts RMS, 275 watts Dynamic Power |
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| Auto On/Off |
Yes |
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| Cabinet Design |
N/A |
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| Color |
Black Ash Wood Grain |
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| Dimensions: (H/W/D) |
15.1" x 14.2" x 18.9" (38.4 x 36 x 48 cm) |
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| Frequency Response (+/-3 dB) |
29-140 Hz |
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| HiPass Crossover |
Full Range |
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| LoPass Crossover |
50 Hz-200 Hz |
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| Phase Control |
0, 180 Degrees |
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| Removable Grille |
Yes |
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| Shipping Weight |
33 lbs. (15 kg) |
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| Size |
Large |
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| Voice Coil |
2" dual layer copper-wound |
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| Warranty (N. Am.) |
Two years (electronics & drivers - parts & labor) |
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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
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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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