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Model: Q900B
  • Description
  • Specifications
  • Datasheet

KEF Flagship Floorstanding Speaker. Two & a half-way bass reflex. Uni-Q driver array: 1 x 8" uni-q , 1 x 1.5" vented dome HF,1 x 8" LF & 2 x 8" ABR. Colour Black. SOLD AS PAIR

The Q900 model is the flagship model of the Q Series range, featuring a new generation Uni-Q MF/HF array paired with a 200mm (8in) long-throw bass driver of equal size, and two matching ABRs. The Q900s will flood the room with an intricate and intensely physical soundstage. As the front speakers in a home theatre system, these towering performers will create a flawless and mind-blowing 3-D image that faithfully tracks the action on screen.


Uni-Q driver array

Sweet, spacious and true, wherever you sit.

Thanks to the latest computer modelling techniques, years of painstaking development and a dash of design genius, the new iteration of the Uni-Q concept packs a formidable complement of design innovations. Based on the state-of-the-art HF driver developed for Concept Blade, the Q boasts a much larger (25mm/1 in. dome) tweeter for increased sensitivity and distortion-free power handling. It plays as loud as it plays true.


Advanced bass technologies

Deeper, tighter and more accurate bass.

Featuring rigid new aluminium cone technology just like the Uni-Q array, the Q Series advanced bass driver is a tour de force in its own right. A die-cast aluminium chassis rigidly locates the high efficiency vented magnet assembly to prevent unwanted resonance, and the large (50mm) voice coil ensures impressive power handling. Its musicality is impeccable: seductively tuneful and well controlled, and on the floor standing models, complemented by dedicated front-firing auxiliary bass radiators (ABRs).


Total system design

A holistic approach with no compromises.

The performance envelope of these sensational new drive units is so generous that the signal needs minimal intermediation - simple first order crossovers are all that's required, as you can tell from the transparency of the sound and the inaudible fluent transitions.

Design  Two and a half-way bass reflex 
Drive units 

200mm (8in.) aluminium Uni-Q

38mm (1.5in.) vented aluminium dome HF

200mm (8in.) aluminium LF

2 x 200mm (8in.) aluminium ABR

Frequency response (±3dB)  32Hz - 40kHz 
Crossover frequency  1.8kHz 
Amplifier  N/A
Amplifier requirements  15 - 200W
Sensitivity (2.83V/ Im)  91dB 
Maximum output (SPL)  114dB 
Low pass filter variable  N/A
Low level signal inputs  N/A
Internal volume  N/A
Power requirements  N/A
Power consumption  N/A
Weight 22.1kg (48.71bs) 
Dimensions (HxWxD)  1060 x 244 x 322mm 
Dimensions with plinth (HxWx D)  1107 x 359 x 322mm