KEF Launches Updated Q Series Speakers for 2017

KEF 2017 Q Series

KEFs affordable Q Series line of high-performance speakers has received an update for 2017. This is the 8th iteration of the line and it features a revamped Uni-Q driver that leverages a damped tweeter loading tube, for better lower treble performance.

There are six models in the series. These including two bookshelf models—the Q150 ($550/pair) and Q350 ($650/pair). There are three floorstanding options: Q550 ($550/each), Q750 ($750 each), and Q950 ($900 each). Plus, the line includes a center-channel speaker, the Q650c ($650 each).

The improvement to the Uni-Q’s tweeter is not the only change found in these speakers. The press release notes the inclusion of a low-distortion inductor in the crossover, the use of a new paper cone woofer on the floor standing models, a new cabinet design that puts the Uni-Q in its own isolated chamber, a switch to a centered alignment for the bookshelf speaker’s Uni-Q drivers (to reduce resonances), as well as a new port design—it’s now located on the rear of the cabinet.

For the floorstanding Q550, Q750, and Q950, KEF touts the use of larger roll surrounds plus new spiders on the woofer. The release also notes that these models have a mid-bass driver that’s been altered to improve midrange clarity and blend better with the other drivers.

KEF’s 2017 Q Series speakers all support (optional) magnetically attached grills. Clearly the 2017 update to the lineup is not merely a cosmetic facelift, although one look at the Q Series reveals that they have great looks, too. These speakers are available in black or white satin matte finishes and will be available for purchase this month.


Here are key specs for each model:

Q150 – 2-way bass reflex bookshelf, 5.25″ 2-way Uni-Q driver with 1″ aluminum-dome tweeter. 51 Hz to 28 kHz +/-3 dB response, 86 dB sensitivity, 100W power handling, and 8 ohms impedance.

Q350 – 2-way bass reflex bookshelf, 6.5″ 2-way Uni-Q driver with 1″ aluminum-dome tweeter. 63 Hz to 28 kHz +/-3 dB response, 87 dB sensitivity, 120W power handling, and 8 ohms impedance.

Q650 – 2.5-way bass reflex center channel, 6.5″ 2-way Uni-Q driver with 1″ aluminum-dome tweeter with a 6.5″ aluminum woofer and a 6.5″ passive radiator. 64 Hz to 28 kHz +/-3 dB response, 87 dB sensitivity, 150W power handling, and 8 ohms impedance.

Q550 – 2.5-way bass reflex floorstander, 5.25″ 2-way Uni-Q driver with 1″ aluminum-dome tweeter. 5.25″ aluminum woofer, dual 5.25″ passive radiators. 58 Hz to 28 kHz +/-3 dB response, 87 dB sensitivity, 130W power handling, and 8 ohms impedance.

Q750 – 2.5-way bass reflex floorstander, 6.5″ 2-way Uni-Q driver with 1″ aluminum-dome tweeter. 6.5″ aluminum woofer, dual 6.5″ passive radiators. 48 Hz to 28 kHz +/-3 dB response, 88 dB sensitivity, 150W power handling, and 8 ohms impedance.

Q950 – 2.5-way bass reflex floorstander, 8″ 2-way Uni-Q driver with 1.5″ aluminum-dome tweeter. 8″ aluminum woofer, dual 8″ passive radiators. 44 Hz to 28 kHz +/-3 dB response, 91 dB sensitivity, 200W power handling, and 8 ohms impedance.

This refresh looks like it brings numerous tangible improvements to the table that should translate into better sound. I should have a pair of Q350 bookshelf speakers on hand to review within days.