Speaker system KEF Hi-Fi R50
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The KEF R50 speakers are designed to reproduce the Dolby Atmos format and are installed above the existing front and rear speakers. Vertical dimension is an essential part of the breathtaking effects that Dolby has brought to cinemas.

Featuring many of KEF's latest innovations in premium hi-fi and home theater speaker technology, the all-new R Series makes true audiophile entertainment standards more accessible than ever before. The new Uni-Q drivers, combined with new powerful bass drivers and many other improvements, produce a rich, voluminous sound image with such fidelity that it approaches the standards of the legendary Reference Series.
R50 - LATEST speakers for Dolby Atmos
The latest KEF R50 speakers are designed to reproduce the Dolby Atmos format, installed above the existing front and rear speakers. Knowing how the human ear perceives sound, KEF engineers were able to perfectly reproduce the vertical dimension of Dolby Atmos effects using sound reflected from the ceiling. Designed for the new Blade, the UNI-Q module features a closed cabinet design that perfectly matches the Q, R and Reference series speakers, both aesthetically and sonically. A sophisticated 25mm tweeter at the center of the 130mm mid-bass driver, "tangerine" waveguide for uniform sound dispersion, creates an accurate, fast and clean midrange band, perfectly matched to the latest KEF speaker series.
The new Uni-Q mid/high driver is a true masterpiece. Thanks to the magnesium-aluminum alloy cones, the midrange response is amazingly fast and clear. The KEF-designed Z-Flex suspension creates a smooth transition to the front panel, while a solid die-cast aluminum basket prevents resonance from being transferred to the cabinet. An intricately designed ventilated tweeter sits at the acoustic center of the midrange cone, giving the KEF Blade such an astoundingly clean high-frequency response. Thanks to a large neodymium magnet and a computer-optimized dome cone, which form a structure so rigid that it works like a single piston throughout the entire operating range, the upper registers are reproduced with impeccable accuracy. Mounted on the Uni-Q driver, KEF's tangerine-shaped waveguide helps distribute high-frequency sound evenly over a wider angle to fill the entire room with detailed and remarkably natural sound. Working as one beautifully integrated sound source, the Uni-Q driver creates pleasing, accurate sound with unparalleled clarity.
The new low-frequency transducer makes the same strong impression. The combination of a massive ventilated magnet assembly with a large yet lightweight aluminum voice coil driving a lightweight, rigid and durable hybrid material cone delivers clear and deep bass with excellent dynamics and high power handling.
Inside the cabinet (choice of classic Piano Black and real wood veneer in rosewood or walnut), every single component confirms KEF's technological leadership. Computer-calculated crossovers allow you to fine-tune the level of each driver for a more even frequency response. Layered damping panels help prevent cabinet vibration and its detrimental effect on mid and low frequency sound quality. Even the airflow through the bass reflex ports is calculated using computational fluid dynamics to maintain the acoustic integrity of the sound.
The lineup of ten attractive models includes three solid floorstanders, two bookshelf speakers, two dedicated center channel speakers, dipole surround speakers and a matched subwoofer, and the R50 - THE LATEST Dolby Atmos speakers. The R-series represents a decisive step forward in high-quality reproduction of music or movie soundtracks. Combining the cutting-edge technology of the KEF Blade into a classic, elegant format gives serious audiophiles the ability to reproduce phenomenally faithfully, indistinguishable from the original recording. Reproduction of exquisite, voluminous and extremely detailed. This is an ideal purchase for those whose desire for truly perfect sound exceeds the amount in the bank account.
Model | R50 |
Design | closed case |
Speakers | Uni-Q module: |
Frequency response (-6 dB) | 96Hz - 19.5kHz |
Frequency response (±3 dB) | 105Hz - 18.5kHz |
Crossover frequencies | 2.5kHz |
Recommended Amplifier Power | 25 - 100 W |
Sensitivity (2.83V/1m) | 85dB |
Harmonic distortion 2nd and 3rd harmonics (90 dB, 1 m) | <0.4% 200Hz-20kHz |
Maximum sound pressure | 106dB |
Resistance | 8Ω (min. 4.8Ω) |
The weight | 4.5kg |
Dimensions (HxWxD) (with decorative grille and terminals | 174 x 180 x 255 mm |
Finishes | Black polished lacquer |
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