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KEF R11- Floorstanding Speaker Black (Pair)

Features: The largest model in the R Series combines four bass drivers and the latest generation Uni-Q for a powerful and refined sound | With hybrid aluminum bass drivers and a 12th generation Uni-Q for mid and treble the mighty R11 is extremely capable | Using technology from KEF Reference delivers clarity, finesse, and serious bass | Manufacturer Warranty : 3 years
₹ 55,084.00 excl tax
Manufacturer: KEF
SKU: KEF-FSS-B-R11
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| Key Features
 
  • Uni-Q driver places the tweeter in the center of the midrange driver for ideal acoustic placement
  • Shadow Flare profiled transition surface extends waveguides to prevent cabinet diffraction
  • Bass drivers built with an aluminum 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

 

| Description
 

Benefits of KEF R11 Floorstanding Speaker:

 

Uni-Q Driver Array

 

Developed by KEF in 1988, the Uni-Q driver array acts as a single-point source, providing pristine sound across a wider area. The R Series benefits from a new incarnation of this driver array, with advantages over its predecessors, including a new midrange motor system that drastically reduces distortion. Air moving across the minute gaps between Uni-Q’s separate elements creates tiny resonances, but KEF engineers have reduced the impact of these necessary gaps by opening a cavity behind the drivers and adding resonance-absorbing damping material for more precise, purer treble.

 

Shadow Flare

 

 

Derived from the Reference Series, the Shadow Flare reduces harmful cabinet diffraction and allows the Uni-Q to work at its highest level. More than just a trim ring, Shadow flare is a precision-designed surface that extends the waveguide effect of Uni-Q. The tweeter no longer has a line of sight of the cabinet edges, creating a ‘shadow region’ at the highest potential for diffraction, minimizing the acoustic impact to negligible levels. The result is improved clarity, particularly when it comes to the subtle nuances of plucked strings and percussive sounds.

 

Low-Frequency Drivers

 

 

The R Series’ dedicated low-frequency drivers have a two-part structure, where a shallow concave aluminum skin sits atop a paper cone. This adds stiffness, while the cone’s unique geometry reduces resonances and delivers the pistonic movement that makes these drivers time so well. The new drivers also have a completely redesigned magnet system that creates a more even magnetic field, and a design spider that reduces harmonic distortion for a cleaner, more precise sound.

 

Cabinet Bracing

 

 

The R Series benefits from Constrained Layer Damping bracing originally developed for the multiple award-winning LS50, and a new internal bracing layout. This combination brings the R Series closer to the internal structure of the Reference Series and helps it deliver music as it is supposed to sound, without any unwanted extras.

 

Flexible Port Technology

 

KEF engineers computer-modeled the ideal crossover networks before exhaustively auditioning every high-grade component, individually and together, to select those with the lowest distortion and the smoothest response. Perfectionism takes time, but the difference is plain to hear. Nothing is overlooked - Reference crossovers are even mounted on separate boards and decoupled from the cabinet walls to minimize vibration and crosstalk.

As any hi-fi enthusiast knows, there's no shortage of compelling speakers these days. But its beauty is only revealed when the sound isn't right. Luckily, the KEF R11 Floorstanding Speaker, the flagship of the venerable British brand's midsize R-series, packs smart tech for great sound into a beautiful package and comes at a lower price than you might expect. Sitting above the entry-level Q-series and below the reference series, the R-series was first launched in 2011 but is now a new version for 2018. With the latest model, the midrange is Redesigned with the Signature of the R-series speaker.

 

| Technical Specifications of KEF R11 Floorstanding Speaker

 

 Brand & Model 

 KEF R11- Floor Standing Speake

 Enclosure Type

 3- Way Bass Reflex

 Frequency Response

 46Hz-28kHz (±3dB)

 Nominal Impedance

 8 Ohms (min.3.2 Ohms)

 Sensitivity

 90dB (2.83V/1m)

 Crossover Frequency

 400Hz, 2.9kHz

 Max Power Output

 113dB

 Bass Driver

 LF: 4x 165mm (6.5in.) hybrid aluminum

 Cabinet Finish

 Black Gloss / White Gloss / Walnut

 Dimensions (WxHxD)

 1249 x 200 x 383.5 mm (49.2 x 7.9 x 15.1 in.)   with terminal*

 1295.5 x 310.6 x 383.5 mm (51 x 12.2 x 15.1   in.) with terminal with Plinth*

 1249 x 200 x 360 mm Cabinet only

 Weight
 37.7 Kg(83.1lbs.)

 

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| Key Features
 
  • Uni-Q driver places the tweeter in the center of the midrange driver for ideal acoustic placement
  • Shadow Flare profiled transition surface extends waveguides to prevent cabinet diffraction
  • Bass drivers built with an aluminum 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

 

| Description
 

Benefits of KEF R11 Floorstanding Speaker:

 

Uni-Q Driver Array

 

Developed by KEF in 1988, the Uni-Q driver array acts as a single-point source, providing pristine sound across a wider area. The R Series benefits from a new incarnation of this driver array, with advantages over its predecessors, including a new midrange motor system that drastically reduces distortion. Air moving across the minute gaps between Uni-Q’s separate elements creates tiny resonances, but KEF engineers have reduced the impact of these necessary gaps by opening a cavity behind the drivers and adding resonance-absorbing damping material for more precise, purer treble.

 

Shadow Flare

 

 

Derived from the Reference Series, the Shadow Flare reduces harmful cabinet diffraction and allows the Uni-Q to work at its highest level. More than just a trim ring, Shadow flare is a precision-designed surface that extends the waveguide effect of Uni-Q. The tweeter no longer has a line of sight of the cabinet edges, creating a ‘shadow region’ at the highest potential for diffraction, minimizing the acoustic impact to negligible levels. The result is improved clarity, particularly when it comes to the subtle nuances of plucked strings and percussive sounds.

 

Low-Frequency Drivers

 

 

The R Series’ dedicated low-frequency drivers have a two-part structure, where a shallow concave aluminum skin sits atop a paper cone. This adds stiffness, while the cone’s unique geometry reduces resonances and delivers the pistonic movement that makes these drivers time so well. The new drivers also have a completely redesigned magnet system that creates a more even magnetic field, and a design spider that reduces harmonic distortion for a cleaner, more precise sound.

 

Cabinet Bracing

 

 

The R Series benefits from Constrained Layer Damping bracing originally developed for the multiple award-winning LS50, and a new internal bracing layout. This combination brings the R Series closer to the internal structure of the Reference Series and helps it deliver music as it is supposed to sound, without any unwanted extras.

 

Flexible Port Technology

 

KEF engineers computer-modeled the ideal crossover networks before exhaustively auditioning every high-grade component, individually and together, to select those with the lowest distortion and the smoothest response. Perfectionism takes time, but the difference is plain to hear. Nothing is overlooked - Reference crossovers are even mounted on separate boards and decoupled from the cabinet walls to minimize vibration and crosstalk.

As any hi-fi enthusiast knows, there's no shortage of compelling speakers these days. But its beauty is only revealed when the sound isn't right. Luckily, the KEF R11 Floorstanding Speaker, the flagship of the venerable British brand's midsize R-series, packs smart tech for great sound into a beautiful package and comes at a lower price than you might expect. Sitting above the entry-level Q-series and below the reference series, the R-series was first launched in 2011 but is now a new version for 2018. With the latest model, the midrange is Redesigned with the Signature of the R-series speaker.

 

| Technical Specifications of KEF R11 Floorstanding Speaker

 

 Brand & Model 

 KEF R11- Floor Standing Speake

 Enclosure Type

 3- Way Bass Reflex

 Frequency Response

 46Hz-28kHz (±3dB)

 Nominal Impedance

 8 Ohms (min.3.2 Ohms)

 Sensitivity

 90dB (2.83V/1m)

 Crossover Frequency

 400Hz, 2.9kHz

 Max Power Output

 113dB

 Bass Driver

 LF: 4x 165mm (6.5in.) hybrid aluminum

 Cabinet Finish

 Black Gloss / White Gloss / Walnut

 Dimensions (WxHxD)

 1249 x 200 x 383.5 mm (49.2 x 7.9 x 15.1 in.)   with terminal*

 1295.5 x 310.6 x 383.5 mm (51 x 12.2 x 15.1   in.) with terminal with Plinth*

 1249 x 200 x 360 mm Cabinet only

 Weight
 37.7 Kg(83.1lbs.)

 

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Features: The largest model in the R Series combines four bass drivers and the latest generation Uni-Q for a powerful and refined sound | With hybrid aluminum bass drivers and a 12th generation Uni-Q for mid and treble the mighty R11 is extremely capable | Using technology from KEF Reference delivers clarity, finesse, and serious bass | Manufacturer Warranty : 3 years
₹ 55,084.00 excl tax