KEF Single 3-way black ash Q series floorstanding speaker

IQ90 Black Ash (Black Ash)

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Defining KEF's new Q Series speakers . . . the iQ90. Uni-Q technology places the 0.75" tweeter at the acoustic center of the 6.5" midrange driver, delivering a broad audio soundstage that fills your listening area, and reproducing the nuances of your favorite movie's dialogue or your favorite album's audio. Further, dual 6.5" woofers combine with a bass-reflex, ported enclosure to offer controlled, low-distortion, high-efficiency bass.

Sold as a single speaker.

The new Q Series, exemplified

The folks at KEF describe the three-way iQ90 floorstanding speaker as "exemplifying" the new Q Series of loudspeakers. We, however, up the ante — the iQ90 defines the new Q Series. Newly designed low- and high-frequency drivers minimize distortion and other unwanted sources of coloration, while also improving upon the depth and purity of audio reproduction. KEF's innovative Uni-Q driver array broadens the soundstage created in your listening area, and the wood-grain veneer cabinet delivers performance enhancement and style. Whether used as part of a stereo pair or a 5.1- or 7.1-channel home theater system, the iQ90 charters the course for the new KEF Q Series.

Focused audio

Traditional speaker-driver arrays often project sound in such a way that a full audio effect can only be experienced in a small and limited space within your listening area. Such a configuration might be great if you and at most two other people ever watched movies or listened to music in your home theater area, always sitting in the same places within the designated audio "hot spot". But this couldn't be further from the truth. You invite multiple friends over for movie night; you entertain guests, expecting your audio system to fill the room with music. Where traditional driver configuration fail, KEF's Uni-Q driver array forges success. By placing the tweeter at the acoustic center of the bass or midrange driver cone, the Uni-Q array allows the tweeter and woofer to work in unison as a single, focused sound source, dispersing audio both widely and evenly throughout the room. The result is a broad, enveloping audio soudstage that transforms your entire listening area into an audio "hot spot." The KEF iQ90 sports a 0.75" tweeter in uni-Q array with a 6.5" midrange driver, reproducing the nuances of the human voice in movie dialogue and the subtleties of any performance from your favorite album.

A high-frequency medley: tweeters and tangerines

As just noted, KEF's Uni-Q driver array transforms loudspeaker driver performance by greatly broadening the soundfield achieved by a tweeter/woofer driver pair. But what if that soundstage could be widened even further, while still preserving the integrity of high-frequency audio reproduction? With its new "tangerine" waveguide, the iQ90's 0.75" aluminum-dome tweeter delivers both a smoother, clearer high-frequency response and an even more expansive audio dispersion, leaving even further behind the notion of an audio "hot-spot." An appropriate first song: Led Zeppelin's "Tangerine", what else?

"Lavish" bass

The use of the word "lavish" to describe the iQ90's dual 6.5" low-frequency drivers might be an understatement. While KEF's new "labyrinth" damping system delivers controlled bass free of the distortion that so often impairs low-frequency reproduction from tall speakers, the use of roll rubber surrounds allows for longer throw, increased bass extensions, and greater power handling. Further, magnetic shielding lets you safely place this speaker to the side of your TV without fear of damage to the screen.

More than just a stylish package: performance-minded enclosures

Whether it's coming from the soundtrack on your favorite movie or from your favorite album, the audio reproduced by your speaker system involves as much the production of sound as the prevention of the production of sound. At the same time that a speaker driver is reproducing the audio you want to hear, the movement of the driver's parts and resonance in the speaker's cabinet can result in the production of additional sounds that might not be desired. With its MDF construction and ported, bass-reflex design, the iQ90's enclosure minimizes sources of resonance and distortion while also taking advantage of that very resonance to enhance your audio experience. First, Medium Density Fiberboard provides extra bracing that dramatically reduces vibration and, hence, distortion. Second, the bass-reflex cabinet design with dual front-firing ports takes advantage of the resonance at the rear of the iQ90's woofer drivers, extending low-frequency reproduction and improving bass efficiency. Better bass performance means a fuller, richer home audio experience.

Comparison Specifications

Power rating: 15 - 200W
Input impedance: 8 ohms
Tweeter: One 0.75" aluminum tweeter in Uni-Q array with midrange driver
Midrange: One 6.5" driver in Uni-Q array with high-frequency tweeter
Woofer: Two 6.5" low-frequency drivers
Crossover: 180Hz - 2.5kHz
Cabinet design: Bass-reflex, ported cabinet / Laminated MDF construction
Magnetic shielding: Yes
Mounting options: Designed for floor placement, plinth base shown but not included.

Additional Specifications

Sensitivity: 91dB
Maximum output: 113dB
Frequency response: 33Hz - 40kHz
Terminals: Bi-wire or bi-amplification terminals / Fully shrouded / Oxygen-free-copper linking wires

Dimensional Specifications

Dimensions: 8.7" W x 37.0" H x 12.9" D
Weight: 36.6 lbs

KEF IQ90 Black Ash Warranty Details

5-year parts and labor warranty

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