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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 |
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| Design |
Two and a half-way bass reflex |
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| 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 |
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| Frequency range free field |
45Hz (-6dB) |
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| Frequency Response |
58Hz-28kHz (±3dB) |
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| Crossover Frequencies |
2.5kHz |
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| Maximum Output |
110dB |
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| Amplifier requirements |
15-130W |
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| Sensitivity |
87dB (2.83V/1m) |
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| Nominal Impedance |
8 Ohms (min.3.5 Ohms) |
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| Dimensions |
H x W x D:
873 x 180 x 278 mm
926 x 299 x 310 mm (with Plinth) |
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| Weight |
14.5kg (32 lbs) |
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| Unit measurement |
Pair |
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Dimensions | Metric :6" W x 6" D x 48-1/2" H (with base) | 15.2 x 15.2 x 123.2 cm
Packaging :One to a carton
Height with Base | Metric :48-1/2" | 123.2 cm
Base Dimensions | Metric :10" W x 9-3/4" D | 25.4 x 24.8
Driver Complement :One 1" pure aluminum dome tweeter; Two 5-1/4" high definition midrange drivers; Two 5-1/4" high definition bass drivers; Two 5-1/4" pressure coupled bass radiators
Enclosure :Aircraft grade extruded aluminum
Frequency Response :20 Hz – 30 kHz
Recommended Associated Amplifier Power :20 – 250 watts
Available Finishes :Gloss Black
Weight | Metric :37 lbs | 16.8 kg
Impedance :Compatible with 8 Ohms outputs
Inputs :One pair of 5 way binding posts
Warranty :5 Years
A/V Receiver Crossover Setting :60 Hz
Accessories :Plastic Foot Tippers; Isolation Spikes
Sensitivity :92 dB
Base :Tempered Glass
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Dimensions | Metric : 4" D x 4-1/16" W x 19-9/16" H | 10.1 x 10.3 x 49.7 cm
Base Dimensions | Metric :5-1/2" D x 6-1/2" W | 14 x 16.5 cm
Driver Complement :One 1" pure aluminum dome tweeter; Two 3-1/2" high definition bass/midrange drivers; Two 3-1/2" pressure coupled bass radiators
A/V Receiver Crossover Setting :120 Hz
Frequency Response :60 Hz – 30 kHz
Inputs :One pair of 5 way binding posts
Impedance :Compatible with 8 Ohms outputs
Enclosure :Aircraft grade extruded aluminum
Sensitivity :89 dB
Available Finishes :Gloss Black
Recommended Associated Amplifier Power :10 – 175 watts
Accessories :Wall bracket; Glass Base
Mounting Options :Vertically Only: On Shelf with included glass base; On wall with included flush mounting bracket
Packaging :One to a carton
Weight | Metric :8 lbs | 3.6 kg
Warranty :5 Years |
Dimensions | Metric :42" H x 8" W x 12-1/4" D | 106.7 x 20.3 x 31.1 cm
Driver Complement :Two 1" aluminum dome tweeters; Two 6-1/2" high definition bass/midrange drivers
Frequency Response :20Hz - 30 kHz
Impedance :Compatible with 8 Ohm outputs
Sensitivity :91 dB
Recommended Associated Amplifier Power :20 - 300 watts
A/V Receiver Crossover Setting :Large; Full Bandwidth
Inputs :One set of 5 way binding posts
Available Finishes :Piano-Black Gloss
Accessories :Feet; Isolation Spikes
Packaging :One to a carton
Weight | Metric :57 lbs | 25.9 kg
Warranty :5 Years
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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
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PRICE PER SPEAKER
Specifications | Recommended Usage | Front Speakers | | Type | 3-Way Bass Reflex Design |
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| Woofers | Dual 6-1/2" PMD Cone |
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| MidRange Driver | 5" Cone With Waveguide Horn |
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| Tweeters | 1" Aluminum Dome With Waveguide Horn |
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| Magnetic Shielding | Yes |
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| Twin Bass Reflex Ports | Single Port |
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| Gold-Plated Brass Extruded Terminals | Bi-Wiring Terminals |
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| Frequency Response | 30 Hz - 35 kHz |
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| Sensitivity | 88 dB/2.83 V/1 m |
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| Input Power (Maximum / Nominal) | 250W / 100W |
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| Impedance | 6 Ohms |
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| Product Dimensions (W x H x D) | 8-3/4" x 38-9/16" x 13-9/16“ |
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| Product Weight (lbs. each) | 20 Kg
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