KEF R Series R11 Floorstanding Speakers
The KEF R Series R11 Floorstanding Speakers are the flagship speaker in the R Series range, with four hybrid aluminium bass drivers for deep, impactful bass and a 5 inch midrange driver combined with a 1 inch tweeter in a Uni-Q driver array for a natural and refined delivery.
The R11 speakers feature KEF’s innovative Uni-Q driver array, where the tweeter is placed in the acoustic centre of the midrange cone. This brings the ideal solution of a single point source closer to realisation. The Uni-Q used in the new R Series is the 12th generation, benefitting from years of KEF’s refinement and development. The new Uni-Q driver has been designed using simulation and analysis tools, and reduces colouration by reducing resonance in the gaps between the separate elements, resulting in a purer, clearer sound with improved stereo imaging.
In order to minimise harmful cabinet diffraction for high frequencies, the R Series employs Shadow Flare technology, using a carefully profiled transition surface to extend the waveguide effect of the Uni-Q. The line of sight between the tweeter and the cabinet edges is no longer present, creating a shadow area at the places where the potential diffraction is highest. Reducing this diffraction helps to improve fine details, such as the subtle nuances of plucked strings and percussive sounds.
The R Series R11 speakers contain four bass drivers, to create a full, rich sound. The bass drivers are constructed using a two part structure, with a shallow concave aluminium skin placed over the paper cone. This creates a better stiffness in the cone, to deliver punch and speed for accurate bass reproduction. A newly designed magnet system produces a more even magnetic field to accurately control the powerful driver.
The cabinet bracing for the R11s uses constrained layer dampening to provide a solid platform for producing great sound. The damping has internal braces joined by a lossy interface, and is highly effective at dissipating unwanted resonances and vibrations that could alter the sound of the music.
Flexible Port Technology
The port design generates deep and articulate bass from the R11 speakers, by featuring innovative flexible walls. Designed with computational fluid dynamics, the flare and profile of the port is calculated to delay the onset of turbulence, while longitudinal resonances that may colour the midrange frequencies are prevented by the flexible walls of the bass port.
- KEF R Series R11 Floorstanding speakers with four 6 inch bass drivers and Uni-Q driver array
- Uni-Q driver places the tweeter in the centre of the midrange driver for ideal acoustic placement
- Shadow Flare profiled transition surface extends waveguides to prevent cabinet diffraction
- Bass drivers built with aluminium skin on a paper cone for greater stiffness
- Constrained layer damping dissipates unwanted resonances
- Flexible port technology delays the onset of turbulence and prevents resonance
|KEF R Series R11 Floorstanding Speakers Specification Sheet|
Orders received before 3:00 pm* will be despatched the same day and can be delivered for next working day, (except bank holidays). For you convenience you can choose multiple shipping options on the checkout page. We will also email with your tracking and dispatch information.
30 Day Returns Policy
HiFix is committed to selling quality products which we hope you will love, we do understand, however, that there maybe a time when you need to exchange or return something you have bought. We really do hope you are pleased with your purchase but should you wish to return anything bought from us, we will be happy to refund or exchange a product within 30 days.
*Due to the current times we have amended our shipping cutoff time to 1pm. Please see more on COVID updates here.
|KEF R Series R11 Floorstanding Speakers Black Gloss||44966||1||In Stock for Immediate Dispatch|
|KEF R Series R11 Floorstanding Speakers Walnut||44967||0||Warehouse stock usually available in 2 to 3 working days.|
|KEF R Series R11 Floorstanding Speakers White Gloss||44968||0||Warehouse stock usually available in 2 to 3 working days.|
|KEF R Series R11 Floorstanding Speakers Black Gloss||44966||1||On demonstration in store|
Warranty information for KEF:
KEF products are designed and manufactured to the highest quality standards. However, if something does go wrong with the product we are here to help. From your date of purchase your product is warranted against faulty materials or workmanship for a period of 24 Months on Speaker Stands, 12 Months on Amplifiers, 60 Months On Speakers and 24 Months on Custom Install speakers.
This guarantee applies to all Kef Products including 5.1 home cinema speaker systems, book shelf speakers, rear speakers, award winning floor standing speakers, sound bars and sub woofers. Providing you with peace of mind and the assurance of premium Quality.