KEF Q550 Floor Speaker 2 and 1/2 Way 15-130W 87dB 5.25inch Black

“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.

The largest speaker in the 600 Series. This floorstander is ideal for audiophile stereo and home theatre applications in larger rooms, delivering serious performance and amazing value.

The 683 S2 features a Decoupled Double Dome tweeter - technology evolved from Bowers & Wilkins CM10 speaker. The double dome design uses an extremely thin aluminium dome for lightness, surrounded by a thicker aluminium ring for rigidity. The result is a far more precise treble performance. And while the tweeter looks like it's part of the main speaker, it's physically separated in its own gel-filled cavity, so performance isn't hit by unwanted resonances or vibrations, for a more natural, spacious sound.

Serious and accurate bass performance is equally vital to such a room-filling speaker. That's why the 683 S2 features a new bass driver construction method, using a similar method of bracing to the tweeter with twin layers of aluminium. The richer, distortion-free bass response is sumptuous.

As well as new bass driver construction techniques and a new tweeter, brought in from Bower & Wilkins high-end series, the 683 S2 also boasts an FST Kevlar midrange driver. Serious technology, serious performance, but seriously affordable for a speaker of this calibre.

Recommended Usage     Front Speakers
Type     3-Way Bass Reflex Design
Woofers     Dual 8" PMD Cone
MidRange Driver     5" Cone With Waveguide Horn
Tweeters     1" Aluminum Dome With Waveguide Horn
Magnetic Shielding     Yes
Twin Bass Reflex Ports     Single Port
Gold-Plated Brass Extruded Terminals     Bi-Wiring Terminals
Frequency Response     30 Hz - 35 kHz
Sensitivity     89 dB/2.83 V/1 m
Input Power (Maximum / Nominal)     250W / 100W
Impedance     6 Ohms
Product Dimensions (W x H x D)     10-7/8" x 43-5/16" x 15-3/8“
Product Weight (lbs. each)     53.7

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)

System Format:    3 Way Frequency Response:    30 Hz - 60 kHz Sensitivity (1W@1M):    90 dB Nominal Impedance:    8 ohms Maximum S.P.L (Per pair in room):    116.8 dBA Power Handling (RMS):    200 W Recommended Amplifier Requirements (RMS):    100 - 200 W Bass Alignment:    Bass reflex. HiVe port system Crossover Frequency:    L.F - M.F: 790 Hz M.F - H.F: 2.3 kHz Drive Unit Compliment:    2 x 6.5" 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) 1060 x 210 x 330 mm (41 3/4 x 8 1/4 x 13 inch) Weight (each) Excluding stands:    27.2 Kg (59.9 lbs)

Driver Complements
Subwoofer 2 - 6" Diameter (15.24cm)
Dynamic Balance Cassini Ovals with Super Cell Aerated Polypropylene diaphragms 2 - 5" Diameter (12.70cm)
Dynamic Balance Cassini Ovals with Super Cell Aerated Polypropylene diaphrams
Mid/Woofer 1 - 6 1/2" Diameter (16.51cm)
Dynamic Balance driver with Super Cell Aerated Polypropylene cone 1 - 5 1/4" Diameter (13.34cm)
Dynamic Balance driver with Super Cell Aerated Polypropylene cone
Midrange 1 - 3 1/4" Diameter (8.26cm)
Dynamic Balance driver with Super Cell Aerated Polypropylene cone 1 - 3 1/4" Diameter (8.26cm)
Dynamic Balance driver with Super Cell Aerated Polypropylene cone
Tweeter 1 - 1" Diameter (2.54cm)
Dynamic Balance Enhanced Ring Radiator Tweeter 1 - 1" Diameter (2.54cm)
Dynamic Balance Ehanced Ring Radiator tweeter
Electrical
Overall Frequency Response 20Hz-40kHz 22Hz-40kHz
Lower -3dB Limit 38Hz dB 42Hz dB
Upper -3dB Limit 30kHz dB 30kHz dB
Nominal Impedance compatible with 8 ohm outputs ohms compatible with 8 ohm outputs ohms
Recommended Amplifier Power 20-300 w/channel 20-250 w/channel
Efficiency 88 dB 88 dB
Crossover Orth Crossover Orth Crossover
Crossover
(mid-high array) 3000Hz 2800Hz
Crossover
(subwoofer) 100HZ 100Hz
Inputs Dual Gold-Plated Binding Posts Dual Gold-Plated Binding Posts
Dimensions
Cabinet Size 50 13/16" H x 9 1/2" W x 18 7/16" D
(129.06cm H x 24.13cm W x 46.83cm D) 47" H x 8 5/16" W x 14 3/8" D
(119.38cm H x 21.11cm W x 36.51cm D)
Footprint Size 10 1/2" W x 20 5/16" D
(26.67cm W x 51.59cm D) 9 1/4" W x 16 1/4" D
(23.50cm W x 41.27cm D)
Mounting Options floor floor
Enclosure Type Sealed Sealed
Enclosure Type
(subwoofer) Dual PowerPort Dual PowerPort bass venting
Shipping/Other
Product Weight 99.20 lbs. (45.00kgs) 78.00 lbs. (35.38kgs)
Shipping unit: each each
Total Shipping Weight 114.70 lbs. (52.03kgs) 86.40 lbs. (39.19kgs)
Speaker Warranty 5 years parts and labor (original purchaser) 5 years parts and labor (original purchaser)

ALSO AVAILABLE IN "EBONY" COLOR