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“Sit anywhere" Uni-Q Sound
At the heart of the evolved Q Series is the Uni-Q driver array. KEF\'s signature innovation places the tweeter in the acoustic center of the midrange cone, bringing the acoustic ideal of a single point source closer than ever to realisation. The result is a more detailed, more accurate three-dimensional sound image, which is dispersed more evenly throughout the room than is possible with a conventional speaker. Uni-Q\'s ultra-wide dispersion is further enhanced by KEF\'s \'tangerine\' waveguide over the tweeter dome.
Uni-Q sound taken to the next level
The closed box midrange cabinet design reduces the load on the Uni-Q midrange cone, increasing clarity and detail while delivering cleaner, punchier bass.
With the addition of the Damped tweeter loading tube providing a gentle termination of sound produced from the back of the tweeter, lower treble performance is improved dramatically and a new low-distortion inductor on the crossover provides cleaner bass response.
Redesigned Bass Drivers
Low-frequency (LF) drivers now have a larger roll surround, along with a new spider suspension to produce cleaner bass at high volumes. A new cone structure improves midrange clarity, and an enhanced Auxiliary Bass Radiators (ABRs) with a new surround and rear suspension delivers better controlled and more impressive bass.
Redesigned Bass Drivers
Low-frequency (LF) drivers now have a larger roll surround, along with a new spider suspension to produce cleaner bass at high volumes. A new cone structure improves midrange clarity, and an enhanced Auxiliary Bass Radiators (ABRs) with a new surround and rear suspension delivers better controlled and more impressive bass.
Floorstanders The Q550 is the smallest floorstander in the Q Series line. Featuring KEF\'s signature Uni-Q driver array paired with a 130mm (5.25 inch) aluminium bass driver and two matching ABRs, the Q550 delivers a phenomenal audiophile performance with clarity, scale, and controlled bass. Great for large or small rooms the Q550 is available in Satin Black or Satin White finishes. Priced as a pair.
Model |
Q550 |
Design |
Two and a half-way bass reflex |
Drive Units |
130mm (5.25in.) aluminium Uni-Q 25mm (1in.)vented aluminium dome HF 130mm (5.25in.) aluminium LF 2 x 130mm (5.25in.)aluminium ABR |
Frequency range free field |
45Hz (-6dB) |
Frequency Response |
58Hz-28kHz (±3dB) |
Crossover Frequencies |
2.5kHz |
Maximum Output |
110dB |
Amplifier requirements |
15-130W |
Sensitivity |
87dB (2.83V/1m) |
Nominal Impedance |
8 Ohms (min.3.5 Ohms) |
Dimensions |
H x W x D: 873 x 180 x 278 mm 926 x 299 x 310 mm (with Plinth) |
Weight |
14.5kg (32 lbs) |
Unit measurement |
Pair |
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The CM8 is an elegantly proportioned, slimmed down version of the award-winning CM9. A true three-way loudspeaker that will appeal to discerning customers who demand the very best sound quality, but have limited space in which to achieve it.
Like all the models in the CM Series, the CM8 uses crossovers of remarkable simplicity and quality, so what you hear is that much closer to the sound of the original recording. In its functional perfection and understated elegance, itʼs nothing less than a masterpiece. Pure and simple.
All CM Series speakers come with chrome driver trims. Grilles attach magnetically, so there are no unsightly grille-mounting features to spoil the clean lines of the speakerʼs façade. For the finish, you can choose either one of two real-wood veneers in Rosenut or Wengé, the highly polished gloss black or the new stylish white.
30-200watt 8 Ohm
Dimensions: 990x200x300
ALSO AVAILABLE IN ROSENUT AND WENGE COLOR
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System Format: 3 Way
Frequency Response: 32Hz - 35kHz
Sensitivity (1W@1M): 90dB
Nominal Impedance: 4 Ohms
Maximum SPL (dBA): 116.2
Power Handling (RMS): 175W
Recommended Amplifier Requirements (RMS): 50 - 175W
Bass Alignment: Bass reflex.
Twin HiVe®II port System
Tweeter Crossover Frequency: LF/MF: 300Hz
MF/HF: 2.2 kHz
Drive Unit Complement: 2 x 6" RST® Bass drivers.
1 x 6" RST® Bass/Mid driver.
1 x 1" (25mm) C-CAM® gold dome tweeter
Product External Dimensions:
(H x W x D)
inc. plinth & feet 960 x 275 x 388 mm
(37 13/16 x 10 13/16 x 15 1/4 inch)
Individual Weight: 21.76 Kg (47.88 lb)
User's Manual
ΔΙΑΤΙΘΕΤΑΙ ΣΤΑ ΠΑΡΑΚΑΤΩ ΧΡΩΜΑΤΑ
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Room-filling sound without a room-filling speaker cabinet. Slimmer than ever before, the 684 S2 offers an amazing combination of floorstander power, audio performance and unbeatable value.
Switching to 5-inch bass/midrange drivers from the previous 6.5-inch cones, means the 684 S2 is now significantly slimmer than its predecessor, with simultaneously improved audio performance, thanks to Bowers & Wilkins innovation. The two Kevlar cone drivers benefit from smaller voice coils to increase sensitivity.
The 5-inch drivers now also feature Anti-Resonance Plug dustcaps, technology taken from our high-end PM1 speakers, that improve pistonic movement inside the voice coil. This helps to deliver amazingly distortion-free midrange performance, all in a smaller space.
As well as slimmer, improved driver performance, the 684 S2 also features a Decoupled Double Dome tweeter. Double dome technology, brought across from the CM10, increases tweeter rigidity for a more precise sound, while the tweeter sits in a gel-filled cavity, decoupled from the surrounding cabinet - which removes resonances and vibrations, for a more natural, spacious sound.
Woven Kevlar | Yes | Crossover Tuning | Yes | Nautilus Tapering Tube | Yes | Flowport | Yes | Technical features | Decoupled Double Dome aluminium tweeter with NautilusTM tube loading
Kevlar® brand fibre cone bass/midrange drivers
FlowportTM | Description | 2-way vented-box system | Drive units | 1x ø25mm (1 in) aluminium dome high-frequency
2x ø130mm (5 in) woven Kevlar® cone bass/
midrange | Frequency range | -6dB at 45Hz and 50kHz | Frequency response | 72Hz - 22kHz ±3dB on reference axis | Dispersion | Within 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc | Sensitivity | 87dB spl (2.83V, 1m) | Harmonic distortion | 2nd and 3rd harmonics (90dB, 1m)
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Single Ported HiVe® II technology Sealed Mid-range TLE® 2 x 6.5” long-throw RDT® bass drivers 1 x 4” RDT® mid-range driver 1 x C-CAM® high frequency ribbon transducer All cabinet finishes have hand-upholstered front baffles in Ingleston Black premium grade leather. Finish options: Santos Rosewood veneer with clear gloss piano lacquer Ebony veneer with clear gloss piano lacquer Piano black gloss Optional dedicated floor stands are available Frequency Response: 35 Hz - 100 KHz Sensitivity (1W@1M): 90 dB Nominal Impedance: 4 Ohms Maximum S.P.L (Per pair in room): 117.8 dBA Power Handling (RMS): 250 W Recommended Amplifier Requirements (RMS): 100 - 250 W Bass Alignment: Rear Ported HiVe®II technology Sealed Mid-range TLE® Mid / H.F Crossover Frequency: 3600 Hz Bass Low Pass Crossover Frequency: 600 Hz Drive Unit Complement: 2 x 6.5" long-throw RDT® bass drivers 1 x 4" RDT® mid-range driver 1 x C-CAM® high frequency ribbon transducer External Dimensions - Including Fixed Plinth (H x W x D): 998 x 360 x 375 mm (39 5/16 x 14 3/16 x 14 3/4 inches) Weight (each) Including Plinth: 33Kg (72.7 lbs) User's Manual AVAILABLE IN THESE COLOR FINISHES
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System Format: 3 Way Frequency Response: 35 Hz - 60 kHz Sensitivity (1W@1M): 89 dB Nominal Impedance: 8 ohms Maximum S.P.L (Per pair in room): 114.5 dBA Power Handling (RMS): 150 W Recommended Amplifier Requirements (RMS): 100 - 150 W Bass Alignment: Bass reflex. HiVe port system Crossover Frequency: L.F - M.F: 400 Hz M.F - H.F: 2.6 kHz Drive Unit Compliment: 2 x 5.5" RST bass driver 1 x 4" RST mid-range driver 1 x C-CAM H.F ribbon transducer External Dimensions excl Stand (H x W x D) 951 x 170 x 300 mm (37 7/16 x 6 11/16 x 11 13/16 inch) Weight (each) Excluding stands: 22.2 Kg (48.9 lbs)
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