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Holiday 2018 > Customer Favorites: Our Best-Selling Gear > KEF - R900 Tower Speakers (Pair)
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KEF - R900 Tower Speakers (Pair)


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Become Breathless Anytime You Play Music: Award-Winning KEF R900 Tower Loudspeakers Feature Twin Eight-Inch LF Drivers, Uni-Q Driver Array, Advanced Architecture, and Slim Profile

Top-to-bottom coherency, balanced symmetry, addictive imaging, generous soundstaging, above-its-class midrange and bass performance: Not for nothing have KEF's R900 tower loudspeakers won awards from hi-fi press outlets in the United States, United Kingdom, France, and Japan. Boasting trickle-down technology straight from KEF's much pricier Blade Series and equipped with twin eight-inch low-frequency drivers located both above and below KEF's signature Uni-Q driver array, R900 specializes in leaving listeners breathless once they hear what they do. A well-rounded speaker that handles any type of music with aplomb, R900 plays with an uncommon level of scale, depth, and dynamics. Your recordings will sound terrifically realistic and soulful. You'll hear previously concealed details from long-time favorites and quickly discover an urge to listen to more new music than you have in years.

The secrets to the three-way bass-reflex R900's abilities go beyond its prized drivers. KEF's FEA-optimized internal architecture does away with the ruinous resonance common to many floorstanders. Structurally, its tall, slim design means R900 can fit in tighter spaces and doesn't require more room than its stated dimensions. Extra stability arrives courtesy of extensions that bolt to the underside of the unit. Read even more about the cutting-edge KEF technology invested in R900 below. Our 100% Satisfaction Guarantee ensures you'll love this speaker's exceptional clarity, faithful accuracy, and spirit-awakening power. Schedule your risk-free in-home audition today.

“There’s nothing that need be said about the midrange. Voices and solo instruments were clear and open, without bloat, boxiness, or any other identifiable coloration. At the top, the R900’s tweeter doesn’t jump out at you, but is simply there.”
—Tom Norton, Sound & Vision, Top Pick Award

“They are the epitome of an understated engineering and musical masterpiece and deserve to be taken far more seriously than their price suggests – which is pretty much exactly what it says on the trickle-down tin.”
—Roy Gregory, Hi-Fi+

“KEF’s R900 is exemplary. Its sound is linear and coherent from bottom to top, offering more than a glimpse of what the best loudspeakers offer, and at what must be considered an affordable price. It has no real shortcomings, only an abundance of strengths—and an emphatic recommendation from a writer usually allergic to such things.”

—Hans Wetzel, SoundStage! Access

“The KEF R900 loudspeakers are not only a classy piece of furniture for the house, they’re an engineering masterpiece. With a smooth and accurate low end, scarily realistic midrange and well extended, yet inoffensive highs, the sound is exactly what one would imagine a reference KEF product at this price-point may produce.”
StereoNET (Australia)

The Technology Behind KEF's Uni-Q Driver
Midrange response is fast and clean thanks to R700's braced magnesium/aluminum alloy cone. KEF's Z-flex surround smooths the transition to the front panel while a sturdy die-cast aluminum chassis prevents resonance from being transferred to the cabinet. The same sophisticated vented tweeter that endows KEF Blade with such startlingly pure high-frequency response resides at the center of the midrange cone. Aided by a large neodymium magnet and a computer-optimized dome structure so stiff that it pistonically operates over its entire working range, the upper registers are articulated with staggering precision. Capitalizing on Uni-Q's point-source characteristics, KEF's ‘tangerine' waveguide helps to disperse the higher frequencies evenly across a wider angle to flood the room with an intricate and refreshingly natural soundfield. Operating together as a single integrated voice, the array as a whole delivers a sweet, accurate sound.

Cutting-Edge Bass Driver Complemented by Computer-Designed Architecture
The new bass driver is equally impressive. The combination of a massive vented magnet assembly and a large, lightweight aluminum voice coil driving a light, stiff hybrid cone assures clean, deep, and uncompressed bass output with superb dynamics and power handling, plus fast and clean midrange response. Inside the cabinets, every component confirms KEF's technological prowess. Computer-designed crossovers allow the level of each driver to be fine-tuned for a smoother, flatter response. Constrained-layer damping panels prevent cabinet vibration from muddying the midrange and bass. Even the airflow through the reflex ports is managed using computational fluid dynamics to optimize acoustic integrity.

A Ballet of Precision and Simplicity
R Series is designed from the ground up. The speaker enclosure's geometry and bracing optimizes vibrational behavior, reducing secondary radiation from cabinet walls for cleaner sound. Damping panels further minimize cabinet resonance and coloration. In addition to magnetic grilles, adjustable die-cast aluminum feet support steel spikes that have integrated locking knobs for easy height adjustment. Nickel-plated bi-wire connectors with terminal-linking control allow all standard connection methods and provide easy, reliable connection. The reflex-port geometry is tuned to minimize turbulence at high levels, reducing port noise and low-frequency compression.

Design: Three-way bass reflex
Drive Units:
   HF: 25mm (1in.) vented aluminum dome
   MF: 125mm (5in.) aluminum
   LF: 2 x 200mm (8in.) aluminum
Frequency Range: 35Hz-45kHz (-6dB)
Frequency Response: 40Hz-28kHz (±3dB)
Crossover Frequencies: 400Hz, 2.9kHz
Maximum Output: 115dB
Amplifier requirements: 25-250 W
Sensitivity: 90dB (2.83V/1m)
Harmonic distortion: <0.4% 120Hz-20kHz (90dB, 1m)
Nominal Impedance: 8 Ohms (min.3.7 Ohms)
Dimensions: 44.5" x 9.4" x 14.4"
Weight: 65 lbs.

User Manual (PDF, 7.3 MB)

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