ProAc K10 Speakers are the latest floorstanders to join the K series range - a selection of speakers utilising Kevlar constructed drivers. The K10 celebrate 10 years of the range and uses two Kevlar cone bass drivers to deliver a simply an stunningly natural and extended bass response. New Midrange Units The K10 is equipped with two of ProAc's ultra-light midrange units designed to deliver an astonishingly detailed midrange. This is thanks to the lightweight diaphragm loaded by an updated waveguide. With this revamped midrange design, the K10 presents an expansive soundstage. Detailed Sound The two K-Cone bass drivers feature new modifications to take advantage of the midrange detail. Power handling is improved and the midrange can work at a higher frequency, revealing details previously hidden thanks to a high quality crossover point. Alongside this, ProAc's ribbon tweeter gives these speakers that sweet sound that when combined with the bass and midrange, creates a wonderfully natural sounding speaker. Premium Design The K10 speakers look as incredible as they sound. Their super slim cabinet stands tall beautiful real wood finishes. The cabinet has been optimised to provide exceptional rigidity and damping. Choose from black ash, mahogany, cherry, walnut, oak and silk white for your visual and listening pleasure. - Nominal Impedance: 4Ω - Recommended Amplifiers: 10 - 150W - Frequency Response: 20Hz - 30kHz - Sensitivity: 91.5dB linear for 1 Watt at 1 Metre - Bass Driver: 2x 200mm (8”) ProAc professional drive units fitted with pure polymer impregnated and polished Kevlar weave cone with rear lacquer and concentric weighting. - Midrange Driver: New 75mm (3”) light diaphragm unit with anew open felt back to help with colouration from the rear. - Tweeter: ProAc ribbon with diaphragm as light as a human hair, alnico magnet and rear chamber damping. - Crossover: Finest components on dedicated dual layer circuit board. ProAc multistrand oxygen free copper cable throughout. Split for optional Bi Wiring or - Bi Amplification - Height: 1499mm (59”) - Width: 297mm (11.7”) - Depth: 457mm (18”) - Weight: 56kg (126lb) each - Grille: Acoustically transparent crimplene

Patented D2430K 3-inch (75mm) dual diaphragm compression driver mated to patented High-Definition Imaging (HDI™) geometry horn. Patented 15-inch (380mm) Dual Differential Drive® woofer in bass-reflex design with dual front-firing tuned ports. Choice of Satin Walnut or Black Walnut furniture-grade satin wood veneers. JBL 4367 For many years, iconic JBL loudspeakers have perfected the definition of luxury audio. The 4367 is no exception. The 2-way loudspeaker offers a cast-frame 15-inch woofer (2216Nd-1) with a powerful, patented Differential Drive® dual 3-inch voice coil and neodymium motor structure for outstanding behavior in the low to mid frequency range. Upper-mid and high frequencies are reproduced by a patented D2430K 3-inch dual diaphragm, dual voice coil compression driver with dual neodymium motor structures and JBL's patented High-Definition Imaging (HDI™) waveguide horn. Type 2-way Floorstanding Loudspeaker Low-Frequency Transducer 15” (380mm) 2216Nd-1 Dual Differential Drive® woofer Mid/High Frequency Transducer 3” (75mm) D2430K dual compression Maximum Recommended Amplifier Power 300 watts RMS Frequency Response (-6DB) 30 Hz – 40 kHz Sensitivity (2.83V@1M) 94dB Nominal Impedance 6 Ohm Crossover Frequencies 700 Hz Enclosure Type Bass-reflex via Dual Front-firing Ports Inputs Dual Gold-plated Five-way Binding Posts Dimensions (H X W X D) 37-1/16” x 22-1/16” x 16-3/4” (941mm x 560mm x 425mm) Weight 119 lb (54kg)

3-way floorstanding speaker Perfect for medium to large sized rooms JBL's own chassis technology A 25 mm magnesium compression tweeter, a 100 mm magnesium compression midrange driver and a 380 mm Alnico magnet woofer ensure dynamic, powerful sound enjoyment and the typical JBL sound. Rear bass reflex port Suitable for amplifiers up to 500 watts Bi-wiring connection terminals The high-quality screw terminals accept speaker cables with banana plugs or cable lugs, as well as bare cable ends. Removable front cover Height-adjustable spikes The spikes derive disruptive vibrations and ensure a clean and differentiated sound. Available in two elegant colors Wood Grain or Zebra Wood. REVIEWS "The K2 S9900 is a miracle of resolution of the first order, plays completely confidently and calmly, has a friendly tonality and is such a well-rounded and finely seasoned work of art that I have rarely experienced." Source: hifitest.de “Large-volume noble floor-standing speaker with pressure chamber drivers for mids and highs. Tweeter with beryllium membrane, bass with Alnico magnet. The JBL sounds monitor-like neutral and crystal clear, even at levels beyond good and bad.” Source: Stereoplay, price/performance: good, very good Version / Color: Zebrano, Wood Grain Recommended amplifier power: up to 500 watts Impedanz: 4 Ohm, 8 Ohm Principle: 3-way, bass reflex, on the back Serie: JBL Serie K2 Drivers: 1x 25mm tweeter, 1x 100mm midrange, 1x 380mm woofer Efficiency: 93dB Frequency response: 48 - 50,000 Hz Item weight: 82.70 kg Length × width × height: 35.00 × 56.00 × 122.00 cm

Sharing the same DNA as Blade One Meta, Blade Two Meta offers all the acoustic prowess and iconic design on a slightly smaller scale. Blade Two Meta features Single Apparent Source technology with four 165mm (6.5 in.) force-cancelling bass drivers and 12th generation Uni-Q® driver array with MAT™. Uncompromised Innovation Obsessed with sound quality and committed to bringing a superior listening experience, our engineers created the revolutionary Concept Blade to showcase KEF’s technology leadership and powers of innovation with no preconceptions and restrictions. Since then, we keep pushing the boundaries of HiFi to create the loudspeaker with the best possible sound. Uniquely KEF. Uniquely coherent. At the heart of Blade lies Single Apparent Source technology; a unique technology that makes the Blade incredibly coherent, with noticeably more precise imaging. The latest version of Blade benefits from our latest acoustic innovation of the 12th generation Uni-Q® with Metamaterial Absorption Technology (MAT™). Engineered and handcrafted in UK Since 1961, we have been creating remarkable award-winning loudspeakers at our UK home in Maidstone, Kent. As our flagship HiFi speakers, Blade is still being designed, engineered, and handcrafted in Maidstone. Design Three-way bass reflex Single apparent source Drive units ​​Uni-Q driver array: HF: 25 mm (1 in.) aluminium dome with MAT MF: 125 mm (5 in.) aluminium cone Bass units: LF: 4 x 165 mm (6.5 in.) aluminium cone, force cancelling Frequency range free field (-6dB) 30Hz -45kHz Frequency range typical in room bass response (-6dB) 25Hz Frequency response (±3dB) 33Hz - 35kHz Crossover frequency 450 Hz, 2.2k Hz Amplifier requirements 50-400W Sensitivity (2.83V/1m) 86dB Harmonic distortion 2nd and 3rd harmonics (90dB, 1m) <0.5% 40Hz - 100kHz <0.2% 200Hz - 2kHz <0.1% 2kHz - 20kHz Maximum output (SPL) (peak sound pressure level at 1m with pink noise) 116dB Impedance 4 Ω (min. 3.2 Ω) Weight 35.5kg (77.8 lbs.) Dimensions - with plinth (H x W x D) 1461 x 338 x 475 mm (57.5 x 13.3 x 18.7 in.) Standard finishes Piano Black/Copper, Piano Black/Grey, Frosted Blue/Blue, Frosted Blue/Bronze, Charcoal Grey/Red, Charcoal Grey/Bronze, Racing Red/Grey, Arctic White/Champagne Downloads Information SheetManualWhite PaperBrochure

At the centre of it all The centre-channel speaker is arguably the most important in home theatre – and the HTM81 D4 has an enviable array of advanced technologies to reinforce that point, including Solid Body tweeter-on-top, a decoupled Continuum™ Cone midrange drive unit and twin 200mm (8-in) Aerofoil™ bass cones. Aerofoil bass cone Our Aerofoil bass cone technology remains an outstanding solution to the conundrum of combining low mass and high stiffness in bass cones, thanks to its carbon-fibre skin and variable-profile foam core. Now, we have added the foam Anti-Resonance Plug for lower distortion and even cleaner bass. Diamond dome tweeter One of our most significant accomplishments over the past two decades, the ultra-stiff, supremely accurate Diamond dome tweeter is the perfect combination of low mass, exceptional stiffness and outstanding accuracy. 15 years after we introduced it, we haven’t found a better tweeter dome technology. Aluminium bass pods HTM81 D4 mounts two Aerofoil bass cones in twin solid aluminium bass pods, each of which is clamped into an aluminium plate fixed to the stiffest part of its curved cabinet. Formed as single pieces of metal, these stiff structures provide the perfect mechanical location for those powerful bass cones. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Size & weight Dimensions Height: 334mm (13.1 in) Width: 847mm (33.3 in) Depth: 371mm (14.6 in) Net weight 32.20kg (71 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø150mm (6in) Continuum cone FST midrange 2x ø200mm (8in) Aerofoil cone bass units Frequency range 20Hz to 35kHz Frequency response 28Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 80Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 500W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω

Nothing looks, or sounds, quite like Nautilus. A revolution when it launched and still an icon today. Its ethos informs everything we do. Nautilus comes in three standard colors: midnight blue, black, and silver. We also offer a special service that can match any color from a sample or color reference. Redefining sound The long, tapered damping tubes were a revolution, allowing the drive units to work optimally by gently absorbing stray energy. Shaped by sound At a glance, you can see Nautilus is no ordinary speaker, and after nearly three decades it still defines high-end audio. Making magic Constructing the complex shapes and precision drive units demands decades of experience and exacting attention to detail. Crafting a classic Nautilus speakers are hand-built to order, alongside the 800 Series Diamond™, by a dedicated specialist team in the Worthing factory. Infinite colors Nautilus comes in three standard colors: silver, black and midnight blue. But, as befits such a unique speaker, we also offer a special service that can match any color you specify. Setting the standard for the future The striking spirals and tubes of Nautilus came from our research into making speaker drive units behave as we wanted: this Nautilus Tube technology, for which we won a Queen's Award for Innovation, is now found in almost every speaker we make. Thinking beyond the box Nautilus is quite unlike a conventional box speaker: to package our unique Nautilus tubes for use in the home, our designers developed the striking, and space-efficient, spiral form from which the speaker takes its name. But why the Nautilus tube? We want to hear a speaker driver, not its side-effects – conventional boxes contain sound from the rear of the driver, but bring their own problems. Nautilus tapering tubes soak up wayward energy and reduce resonances to the point of insignificance. Specifications Nautilus™ tube loading Active crossover System 4-way tube-loaded loudspeaker system Drive Units 1x 300mm (12 in) aluminium cone bass 1x 100mm (4 in) aluminium/polymer sandwich cone lower midrange 1x 50mm (2 in) aluminium dome upper midrange 1x 25mm (1 in) aluminium dome high-frequency Frequency range -6dB at 10Hz and 25kHz Dispersion Within 2dB of response on reference axis Horizontal: over 60° arc Vertical: over 10° arc Crossover frequency 220Hz, 880Hz, 3.5kHz Power amplifier requirements 4 channels per speaker, rated100W-300W continuous into 8Ω on unclipped programme (each channel to have identical gain and phase) Dimensions Height: 1210mm (47.6 in) Width: 430mm (16.9in) Depth: 1105mm (43.5 in) Net weight Speaker: 44.5kg (98lb) Plinth: 42kg (92lb) Total: 86.5kg (190lb)

3-Way Floor Standing Loudspeaker • Two 15" (38.1 cm) woofers • 4" (10.2 cm) pure-beryllium diaphragm for crystal-clear highs • 1" (2.5 cm), pure-beryllium diaphragm for extreme highs • Self-charged Crossover network; Provides more transparent and detailed voicing with lower distortion (Class A Operation) • Frequency Response 29 Hz – 60 kHz (half space); 45 Hz – 60 kHz (anechoic) • Recommended Amplifier Power: 500 watts • Sensitivity (2.83V @ 1m) 96dB Nominal Impedance 8 ohms; 5.0 ohms @ 80 Hz; 3.0 ohms @40 kHz • Dimensions (H x W x D): 43.7" x 38" x 18.5" (110.9 cm x 96.5 cm x 47 cm) • Weight: 313 lb (142.1 kg) • Packaged dimensions (H x W x D): 28" x 53.1" x 49.8" (712 x 1350 x 1265 mm) • Packaged weight: 573 lb (260 kg) • Rosewood (RW) Finish with textured carbon fiber baffle. • 120 day lead time This three-way speaker features two 380-millimeter three-ply sandwich cone woofers (Pure-Pulp layers above and below a foam-injected core) for precise, authoritative bass response. Clear highs and mids come from a 100mm driver for pure beryllium compression. A 25mm pure beryllium driver delivers sound up to 60kHz - far beyond the range of human hearing Frequency Response 29Hz – 60kHz (half space); 45Hz – 60kHz (anechoic) Recommended Amplifier Power 500 watts Sensitivity (2.83V @ 1m) 96dB Nominal Impedance 8 ohms; 5.0 ohms @ 80Hz; 3.0 ohms @ 40kHz Crossover Frequencies (Hz) 150Hz (LF1 6dB/octave) 850Hz (LF2 24dB/octave) 20kHz (UHF 24dB/octave) Ultrahigh-frequency Drive Components 1″ (25mm) pure-beryllium compression driver High-frequency Drive Components 4″ (100mm) pure-beryllium compression driver Low-frequency Drive Components Dual 15″ (380mm) three-layer, pure-pulp sandwich/foam core cone woofer Height 43.7” (110.9 cm) Width 38” (96.5 cm) weight 142.1

The world's first Single Apparent Source speaker, now with 12th generation Uni-Q® with MAT™. A bespoke driver array engineered to deliver pristine performance, and capable of raising Blade to new heights of performance. Featuring four 225mm (9 in.) force-cancelling bass drivers, Blade One Meta is the top model in the Blade series. Uncompromised Innovation Obsessed with sound quality and committed to bringing a superior listening experience, our engineers created the revolutionary Concept Blade to showcase KEF’s technology leadership and powers of innovation with no preconceptions and restrictions. Since then, we keep pushing the boundaries of HiFi to create the loudspeaker with the best possible sound. Uniquely KEF. Uniquely coherent. At the heart of Blade lies Single Apparent Source technology; a unique technology that makes the Blade incredibly coherent, with noticeably more precise imaging. The latest version of Blade benefits from our latest acoustic innovation of the 12th generation Uni-Q® with Metamaterial Absorption Technology (MAT™). Engineered and handcrafted in UK Since 1961, we have been creating remarkable award-winning loudspeakers at our UK home in Maidstone, Kent. As our flagship HiFi speakers, Blade is still being designed, engineered, and handcrafted in Maidstone. Design Three-way bass reflex Single apparent source Drive units ​​Uni-Q driver array: HF: 25 mm (1 in.) aluminium dome with MAT MF: 125 mm (5 in.) aluminium cone Bass units: LF: 4 x 225 mm (9 in.) aluminium cone, force cancelling Frequency range free field (-6dB) 27Hz - 45kHz Frequency range typical in room bass response (-6dB) 20Hz Crossover frequency 350Hz, 2kHz Frequency response (±3dB) 35Hz - 35kHz Amplifier requirements 50-400W Sensitivity (2.83V/1m) 88dB Harmonic distortion 2nd and 3rd harmonics (90dB, 1m) <0.5% 40Hz - 100kHz <0.2% 200Hz - 2kHz <0.1% 2kHz - 20kHz Maximum output (SPL) (peak sound pressure level at 1m with pink noise) 117dB Impedance 4 Ω (min. 2.8 Ω) Weight 57.2 kg (126 lbs.) Dimensions - with plinth (H x W x D) 1590 x 363 x 540 mm (62.5 x 14.3 x 21.2 in.) Standard finishes Piano Black/Copper, Piano Black/Grey, Frosted Blue/Blue, Frosted Blue/Bronze, Charcoal Grey/Red, Charcoal Grey/Bronze, Racing Red/Grey, Arctic White/Champagne Downloads Information SheetManualWhite PaperBrochure

40 years of excellence Innovation. 801 D4 is defined by it. In each of its incarnations over the decades, 801 has always been the most advanced loudspeaker that we know to make at that particular point in time, a showcase of all our newest technologies and most original thinking. Small wonder it has become an icon. The ultimate Matrix™ Matrix bracing uses interlocking panels to reinforce loudspeaker cabinet walls in all directions internally, reducing resonance and creating a more believable soundstage. The Matrix assembly in 801 D4 is our best yet, upgraded with extensive aluminium bracing to reinforce key stress points. Turbine™ Head The all-aluminium Turbine Head houses our Continuum™ midrange cone in a stiff and critically damped enclosure to eliminate unwanted resonances. At the same time, it’s decoupled from both the bass enclosure and the tweeter body. The result? The most realistic midrange sound yet. Biomimetic Suspension Sometimes, making a big difference takes unconventional thinking. Our new Biomimetic Suspension revolutionises midrange performance by greatly reducing the unwanted air pressure and coloration that a traditional fabric spider can generate. The result? Midrange transparency you wouldn’t believe. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond so special here. They bring to life everything from driving rock to the most subtle of solo instruments and voices, with breath-taking insight into performance and music alike. Hi-Fi News Outstanding Product Award This is the best version of the 801s in the entire history of the company and, perhaps, one of the best, if not the best high-end loudspeakers on the market today. hi-fi.ru - Overall verdict 100% Bowers & Wilkins new 801 D4 Loudspeaker is a work of art that also happens to offer world-class sound. Robb Report The sound of the 801 D4 is one of absolute conviction and positivity. Every last shred of information contained in a recording is handed over, in full, with the sort of immediacy that can be literally hair-raising. Wired The state of our art 801 D4 is our flagship and the most powerful model in the new 800 Series Diamond range. Its no-compromise design includes all our most advanced technologies in their purest, most optimised form alongside crossover components of the highest quality. You want our reference loudspeaker? This is it… Size & weight Dimensions Height: 1221mm (48.1 in) Width: 451mm (17.8 in) Depth: 600mm (23.62 in) Net weight 100.60kg (221.8 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Turbine™ Head Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø150mm (6in) Continuum cone FST midrange 2x ø250mm (10in) Aerofoil cone bass units Frequency range 13Hz to 35kHz Frequency response 15Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 30Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 1000W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω Finishes Cabinet finishes Gloss Black White Satin Rosenut Satin Walnut Grille finishes Black Grey Black Grey

Nothing looks, or sounds, quite like Nautilus. A revolution when it launched and still an icon today. Its ethos informs everything we do. Nautilus comes in three standard colors: midnight blue, black, and silver. We also offer a special service that can match any color from a sample or color reference. Redefining sound The long, tapered damping tubes were a revolution, allowing the drive units to work optimally by gently absorbing stray energy. Shaped by sound At a glance, you can see Nautilus is no ordinary speaker, and after nearly three decades it still defines high-end audio. Making magic Constructing the complex shapes and precision drive units demands decades of experience and exacting attention to detail. Crafting a classic Nautilus speakers are hand-built to order, alongside the 800 Series Diamond™, by a dedicated specialist team in the Worthing factory. Infinite colors Nautilus comes in three standard colors: silver, black and midnight blue. But, as befits such a unique speaker, we also offer a special service that can match any color you specify. Setting the standard for the future The striking spirals and tubes of Nautilus came from our research into making speaker drive units behave as we wanted: this Nautilus Tube technology, for which we won a Queen's Award for Innovation, is now found in almost every speaker we make. Thinking beyond the box Nautilus is quite unlike a conventional box speaker: to package our unique Nautilus tubes for use in the home, our designers developed the striking, and space-efficient, spiral form from which the speaker takes its name. But why the Nautilus tube? We want to hear a speaker driver, not its side-effects – conventional boxes contain sound from the rear of the driver, but bring their own problems. Nautilus tapering tubes soak up wayward energy and reduce resonances to the point of insignificance. Specifications Nautilus™ tube loading Active crossover System 4-way tube-loaded loudspeaker system Drive Units 1x 300mm (12 in) aluminium cone bass 1x 100mm (4 in) aluminium/polymer sandwich cone lower midrange 1x 50mm (2 in) aluminium dome upper midrange 1x 25mm (1 in) aluminium dome high-frequency Frequency range -6dB at 10Hz and 25kHz Dispersion Within 2dB of response on reference axis Horizontal: over 60° arc Vertical: over 10° arc Crossover frequency 220Hz, 880Hz, 3.5kHz Power amplifier requirements 4 channels per speaker, rated100W-300W continuous into 8Ω on unclipped programme (each channel to have identical gain and phase) Dimensions Height: 1210mm (47.6 in) Width: 430mm (16.9in) Depth: 1105mm (43.5 in) Net weight Speaker: 44.5kg (98lb) Plinth: 42kg (92lb) Total: 86.5kg (190lb)

Kevlar Drivers Following the successful incorporation of carbon fibre drivers, ProAc developed new "K series" drivers made from Kevlar. Kevlar features similar benefits to carbon fibre in that it's light and at the same time rigid. The ProAc 6 1/2” drivers utilised in the K6 feature Kevlar cones made by the same special method as our carbon fibre coned drive units; the cone is painstakingly produced from a mould by hand, a labour intensive process taking many hours to complete. Although Kevlar has proven to be an excellent cone material sonically, the Kevlar ProAc bass drivers require a different porting mechanism in order to realise their full potential. The bass is loaded by an almost invisible vent to produce a wonderfully weighty but exceptionally fast bass response. These drivers are seamlessly crossed over to a 2” dome midrange, the horn of which is manufactured from billet aluminium and for the high frequencies, ProAc’s proven ribbon tweeter has been chosen. Cabinet Design The cabinet on the K6 is a traditional mixture from ProAc of HDF materials of different thicknesses heavily damped with bitumen. Indeed the carcass including bitumen is 35mm thick. The combination of research into carbon fibre and its ingredients have produced a stunningly accurate and detailed loudspeaker, having an electrostatic or panel quality without the drawbacks. Sound Quality Sound is reproduced effortlessly with incredible detail and pinpoint imagery, which often can be muddled by conventional drive units. The K6 is designed for audiophiles and music lovers who are looking for a true high end loudspeaker offering smooth reproduction and an impressively flat response throughout the frequency range. The legendary ProAc qualities of large soundstaging and pin-sharp imaging capabilities complete a highly musical and engaging transducer. Nominal Impedance: 4 ohms Recommended Amplifiers: 10 to 250 watts Frequency Response: 25hz to 30Khz Sensitivity: 90db linear for 1 watt at 1 metre Bass Driver: 2 x 61/2” pro drive units LF: Polymer inside Kevlar cones/Zinc basket Mid Driver: 2” (50mm) soft dome MF: with 6061 Aluminium Alloy Front Plate Tweeter: ProAc ribbon; diaphragm alnico Chamber: magnet and rear damping HF: 6061 Aluminium Alloy Front Plate Crossover: Finest components dedicated dual layer circuit board Cable: ProAc multistrand OFC through out Split: for optional bi-wiring and bi-amping Dimensions (mm): 1185H x 215W x 340D Weight (kg): 44 each Included: Acoustically transparent grilles

Small wonder 803 D4 may be notably more compact than the 801 D4 or 802 D4, but it still bristles with technical innovation, most obviously in its use of a three-box construction. Its 130mm (5-in) midrange cone is carefully isolated from the impact of its bass cones thanks to its Turbine Head enclosure. Reverse Wrap cabinet Instead of a conventional loudspeaker box, our cabinets are made from a continuous curved section of wood, with the drive units mounted at the heart of the curvature. This stiffer, more inert structure resists mechanical resonances far better and also ensures better dispersion of sound. Enhanced Matrix™ Matrix bracing uses interlocking panels to reinforce loudspeaker cabinet walls in all directions internally, reducing resonance and creating a more believable soundstage. The Matrix assembly in 803 D4 is our best yet, ensuring optimum scale, power and intelligibility. Aluminium bass pods 803 D4 mounts two Aerofoil™ bass cones in twin solid aluminium bass pods, each of which is clamped into an aluminium plate fixed to the stiffest part of its curved cabinet. Formed as single pieces of metal, these stiff structures provide the perfect mechanical location for those powerful bass cones. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond™ so special here. There are few speakers more revered throughout the music industry than the volume-pumping, chicly-designed 800 Series Diamond range. Abbey Road recording studios uses them; which should tell you all you need to know. Gentlemen's Journal Step up for more power 803 D4 features all the most iconic ingredients in the 800 Series Diamond range including, of course, that famous headed enclosure. It is, however, smaller than its other siblings. Step up to the 802 D4, and you’ll get both larger 200mm (8-in) bass cones and a larger 150mm (6-in) midrange driver. Size & weight Dimensions Height: 1165mm (45.9 in) Width: 357mm (14.1 in) Depth: 511mm (20.1 in) Net weight 62.15kg (137 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Turbine™ Head Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø130mm (5in) Continuum cone FST midrange 2x ø180mm (7in) Aerofoil cone bass units Frequency range 16Hz to 35kHz Frequency response 19Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 80Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 500W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω

STEREOPHILE'S PRODUCT OF THE YEAR 2022 - LOUDSPEAKER "The Blade Two Metas are consistently rewarding and satisfying and gave me great pleasure with all the recordings I played. They offer a remarkably open, transparent, coherent soundstage and taut, extended bass." - Stereophile, Nov 2022 Uncompromised Innovation Obsessed with sound quality and committed to bringing a superior listening experience, our engineers created the revolutionary Concept Blade to showcase KEF’s technology leadership and powers of innovation with no preconceptions and restrictions. Since then, we keep pushing the boundaries of HiFi to create the loudspeaker with the best possible sound. Uniquely KEF. Uniquely coherent. At the heart of Blade lies Single Apparent Source technology; a unique technology that makes the Blade incredibly coherent, with noticeably more precise imaging. The latest version of Blade benefits from our latest acoustic innovation of the 12th generation Uni-Q® with Metamaterial Absorption Technology (MAT™). Engineered and handcrafted in UK Since 1961, we have been creating remarkable award-winning loudspeakers at our UK home in Maidstone, Kent. As our flagship HiFi speakers, Blade is still being designed, engineered, and handcrafted in Maidstone. Specification Details Design Three-way bass reflex Drive Units Uni-Q driver array - HF: 25mm (1in.) aluminium dome with MAT - MF: 125mm (5in.) aluminium cone Bass Units 4 x 165mm (6.5in.) aluminium cone, force cancelling Frequency Range (Free Field, -6dB) 30Hz - 45kHz Frequency Range (Typical In-Room, -6dB) 25Hz (Bass) Frequency Range (±3dB) 33Hz - 35kHz Crossover Frequency 450Hz, 2.2kHz Amplifier Requirements 50-400W Sensitivity (2.83V/1m) 86dB Harmonic Distortion (2nd & 3rd Harmonics, 90dB, 1m) <0.5% 40Hz - 100kHz <0.2% 200Hz - 2kHz <0.1% 2kHz - 20kHz Maximum Output (SPL) 116dB Impedance 4Ω (min. 3.2Ω) Weight 35.5kg (77.8lbs.) Dimensions (with Plinth, H x W x D) 1461 x 338 x 475 mm (57.5 x 13.3 x 18.7in.)

Small wonder 803 D4 may be notably more compact than the 801 D4 or 802 D4, but it still bristles with technical innovation, most obviously in its use of a three-box construction. Its 130mm (5-in) midrange cone is carefully isolated from the impact of its bass cones thanks to its Turbine Head enclosure. Reverse Wrap cabinet Instead of a conventional loudspeaker box, our cabinets are made from a continuous curved section of wood, with the drive units mounted at the heart of the curvature. This stiffer, more inert structure resists mechanical resonances far better and also ensures better dispersion of sound. Enhanced Matrix™ Matrix bracing uses interlocking panels to reinforce loudspeaker cabinet walls in all directions internally, reducing resonance and creating a more believable soundstage. The Matrix assembly in 803 D4 is our best yet, ensuring optimum scale, power and intelligibility. Aluminium bass pods 803 D4 mounts two Aerofoil™ bass cones in twin solid aluminium bass pods, each of which is clamped into an aluminium plate fixed to the stiffest part of its curved cabinet. Formed as single pieces of metal, these stiff structures provide the perfect mechanical location for those powerful bass cones. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond™ so special here. There are few speakers more revered throughout the music industry than the volume-pumping, chicly-designed 800 Series Diamond range. Abbey Road recording studios uses them; which should tell you all you need to know. Gentlemen's Journal Step up for more power 803 D4 features all the most iconic ingredients in the 800 Series Diamond range including, of course, that famous headed enclosure. It is, however, smaller than its other siblings. Step up to the 802 D4, and you’ll get both larger 200mm (8-in) bass cones and a larger 150mm (6-in) midrange driver. Size & weight Dimensions Height: 1165mm (45.9 in) Width: 357mm (14.1 in) Depth: 511mm (20.1 in) Net weight 62.15kg (137 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Turbine™ Head Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø130mm (5in) Continuum cone FST midrange 2x ø180mm (7in) Aerofoil cone bass units Frequency range 16Hz to 35kHz Frequency response 19Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 80Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 500W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω

Absolute elegance 802 D4’s svelte proportions and beautiful painted or real-wood-veneer finishes make for an elegant living-room companion – but one that doesn’t compromise on performance. Perfect for reference-grade stereo listening and an excellent choice in home theatre applications. Aerofoil™ bass cone Our Aerofoil bass cone technology remains an outstanding solution to the conundrum of combining low mass and high stiffness in bass cones, thanks to its carbon-fibre skin and variable-profile foam core. Now, we have added the foam Anti-Resonance Plug for lower distortion and even cleaner bass. Aluminium top-plate Every stereo model in the new 800 Series Diamond™ range has a significantly upgraded cabinet with an all-new aluminium top-plate. This also provides a perfect mounting point for all-new Leather by Connolly trim, with luxurious black leather for dark cabinets and light grey for lighter finishes. Decoupled midrange assembly Like its floor-standing siblings in the new range, 802 D4 has a dedicated midrange cone using three key Bowers & Wilkins technologies: the Continuum™ cone, Biomimetic Suspension and midrange decoupling, the latter ensuring minimal interference from the operation of the loudspeaker’s bass drivers. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond so special here. The Bowers & Wilkins 802 D4 produces less inherent sound than virtually any other loudspeaker, and reproduces music as it was originally recorded, completely unclouded. avguide.ch One of our best 802 D4 is a very special loudspeaker in its own right, with a thrilling blend of performance and style that other loudspeakers will find hard to emulate. Only one model in our range can best it – the flagship 801 D4, which has 250mm (10-in) bass cones in a more substantial low-frequency enclosure. Size & weight Dimensions Height: 1218mm (48 in) Width: 413mm (16.3 in) Depth: 602mm (23.7 in) Net weight 88.10kg (194.2 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Turbine™ Head Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø150mm (6in) Continuum cone FST midrange 2x ø200mm (8in) Aerofoil cone bass units Frequency range 14Hz to 35kHz Frequency response 17Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 70Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 500W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω

Absolute elegance 802 D4’s svelte proportions and beautiful painted or real-wood-veneer finishes make for an elegant living-room companion – but one that doesn’t compromise on performance. Perfect for reference-grade stereo listening and an excellent choice in home theatre applications. Aerofoil™ bass cone Our Aerofoil bass cone technology remains an outstanding solution to the conundrum of combining low mass and high stiffness in bass cones, thanks to its carbon-fibre skin and variable-profile foam core. Now, we have added the foam Anti-Resonance Plug for lower distortion and even cleaner bass. Aluminium top-plate Every stereo model in the new 800 Series Diamond™ range has a significantly upgraded cabinet with an all-new aluminium top-plate. This also provides a perfect mounting point for all-new Leather by Connolly trim, with luxurious black leather for dark cabinets and light grey for lighter finishes. Decoupled midrange assembly Like its floor-standing siblings in the new range, 802 D4 has a dedicated midrange cone using three key Bowers & Wilkins technologies: the Continuum™ cone, Biomimetic Suspension and midrange decoupling, the latter ensuring minimal interference from the operation of the loudspeaker’s bass drivers. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond so special here. The Bowers & Wilkins 802 D4 produces less inherent sound than virtually any other loudspeaker, and reproduces music as it was originally recorded, completely unclouded. avguide.ch One of our best 802 D4 is a very special loudspeaker in its own right, with a thrilling blend of performance and style that other loudspeakers will find hard to emulate. Only one model in our range can best it – the flagship 801 D4, which has 250mm (10-in) bass cones in a more substantial low-frequency enclosure. Size & weight Dimensions Height: 1218mm (48 in) Width: 413mm (16.3 in) Depth: 602mm (23.7 in) Net weight 88.10kg (194.2 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Turbine™ Head Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø150mm (6in) Continuum cone FST midrange 2x ø200mm (8in) Aerofoil cone bass units Frequency range 14Hz to 35kHz Frequency response 17Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 70Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 500W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω

Small wonder 803 D4 may be notably more compact than the 801 D4 or 802 D4, but it still bristles with technical innovation, most obviously in its use of a three-box construction. Its 130mm (5-in) midrange cone is carefully isolated from the impact of its bass cones thanks to its Turbine Head enclosure. Reverse Wrap cabinet Instead of a conventional loudspeaker box, our cabinets are made from a continuous curved section of wood, with the drive units mounted at the heart of the curvature. This stiffer, more inert structure resists mechanical resonances far better and also ensures better dispersion of sound. Enhanced Matrix™ Matrix bracing uses interlocking panels to reinforce loudspeaker cabinet walls in all directions internally, reducing resonance and creating a more believable soundstage. The Matrix assembly in 803 D4 is our best yet, ensuring optimum scale, power and intelligibility. Aluminium bass pods 803 D4 mounts two Aerofoil™ bass cones in twin solid aluminium bass pods, each of which is clamped into an aluminium plate fixed to the stiffest part of its curved cabinet. Formed as single pieces of metal, these stiff structures provide the perfect mechanical location for those powerful bass cones. The science of sound Innovation is at the heart of everything we do. We question, we examine, we understand and then we evolve. We use computer modelling to explore and reimagine every aspect of loudspeaker design. Learn more about all the technologies that combine to make 800 Series Diamond™ so special here. There are few speakers more revered throughout the music industry than the volume-pumping, chicly-designed 800 Series Diamond range. Abbey Road recording studios uses them; which should tell you all you need to know. Gentlemen's Journal Step up for more power 803 D4 features all the most iconic ingredients in the 800 Series Diamond range including, of course, that famous headed enclosure. It is, however, smaller than its other siblings. Step up to the 802 D4, and you’ll get both larger 200mm (8-in) bass cones and a larger 150mm (6-in) midrange driver. Size & weight Dimensions Height: 1165mm (45.9 in) Width: 357mm (14.1 in) Depth: 511mm (20.1 in) Net weight 62.15kg (137 lb) Technical details Technical features Diamond tweeter Solid body Tweeter-on-Top Continuum™ cone FST Anti-Resonance plug Biomimetic Suspension Turbine™ Head Matrix™ Aerofoil™ cone bass units Flowport Description 3-way vented-box system Drive units 1x ø25mm (1in) Diamond dome high-frequency 1x ø130mm (5in) Continuum cone FST midrange 2x ø180mm (7in) Aerofoil cone bass units Frequency range 16Hz to 35kHz Frequency response 19Hz to 28kHz (+/-3dB from reference axis) Sensitivity 90dB (on axis at 2.83Vrms at 1m) Harmonic distortion 2nd and 3rd harmonics (90dB,1m on axis) <1% 80Hz – 20kHz <0.3% 100Hz – 20kHz Nominal impedance 8Ω (minimum 3.0Ω) Recommended amplifier power 50W – 500W into 8Ω on unclipped programme Max recommended cable impedance 0.1Ω

Point-Sound-Source Speaker System For soundstage focus and precise imaging, the wave-fronts from a speaker’s drive units should ideally be aligned, arriving simultaneously at the listener’s ears regardless of the listening position. In other words, the speaker system should appear to have have only one point sound source. The newly developed flat coaxial two-way speaker unit, combining midrange and treble drivers, works with a virtual coaxial woofer to realize a point sound source, providing smooth directional characteristics over the entire frequency range, without peaks or dips. Phase Precision Driver (Flat Coaxial 2-Way Speaker Unit) For faithful reproduction of mid-range and high-frequency sound, Technics has developed an all-new flat coaxial two-way drive. The flat mid-range diaphragm is of a sandwich construction, using lightweight, high-rigidity carbon cloth skins and aluminium honeycomb core. It maintains a perfect pistonic motion over a frequency band extending beyond the crossover point with the tweeter, while eliminating the frequency distortions caused by the ‘cavity effect’ in conventional cone diaphragms. The magnetic circuit employs a large magnet, copper cap, copper shorting ring and short voice coil with high-density edgewise winding to achieve high drive power and low distortion, while the speaker chassis is die-cast aluminium, with a resonance-dispersing structure to eliminate even the smallest unwanted vibration. Ultra Wide Range Reproduction Thanks to a carbon graphite dome tweeter mounted at the center of the flat mid-range drive unit, the SB-R1 is capable of reproducing frequencies all the way up to 100 kHz. And with bass extension down to 20 Hz, it’s ready to deliver the vast frequency spectrum offered by high-quality, high-resolution music sources. High Rigidity Entasis Form Cabinet A 50-mm-thick baffle used in the cabinet supports the speaker units rigidly and suppresses undesirable resonances, while side panels comprising eight layers of MDF give the cabinet a curved form, suppressing unwanted vibration and reducing internal and external diffraction and reflection. An internal partition divides the cabinet into upper and lower sections, and eliminates low-order standing waves in the vertical direction. The choice of absorbent acoustic material and its position were optimized based on the frequency band of each drive-unit as well as the cabinet volume, thus further suppressing standing waves inside the cabinet, and even the rings round each drive unit are made of a material with high internal loss to eliminate unwanted emitting from anywhere other than the speaker sound diaphragm. The glossy finish on the cabinet is created through a series of processes including repeated coating, sanding, and polishing, the high degree of craftsmanship complementing the speakers’ high-quality sound. The finish even suppresses fine vibrations generated on the cabinet surface, thus contributing to the accuracy of the sound. Point-Sound-Source Speaker System Low Distortion 16-cm Long Stroke Woofer Technics has developed a long-throw woofer capable of reproducing super-low frequencies with dramatically reduced distortion, giving powerful, dynamic and responsive bass. A push-pull edge (Symmetrical Surround Technology, SST) design cancels secondary harmonic distortion in the low-frequency range. High-quality Network Circuit The High-quality Network Circuit was created as a result of extensive designing and listening, in order to maximize the performance of each speaker unit and achieve a balanced sound. To prevent interference between the drive units and minimize the effect of vibration, separate network boards for woofer, mid-range and tweeter are optimally arranged inside the cabinet. Emotive Acoustic Technology Point-Sound-Source Speaker System Ultra Wide Range Reproduction Phase Precision Driver (Coaxial Flat 2-way Speaker Unit) Low Distortion 16-cm Long Stroke Woofer High-quality Network Circuit High Rigidity Round Form Cabinet Technics Definitive Design Black high gloss piano finish Round Form Cabinet Magnet Fixed Fabric Grille Type 3.5-way 6-Speaker Bass Reflex (including coaxial 2-way for mid-range and tweeter) Speaker Unit Woofer : 16 cm/6-1/2 inch Cone type x4 Midrange/Tweeter: Coaxial, 16 cm/6-1/2 inch Flat type x1 / 2.5 cm/1 inch Dome type x 1 Crossover Frequencies 300 Hz, 3 kHz Frequency Range 20 Hz - 100 kHz (-16 dB), 28 Hz - 90 kHz (-10 dB) Sound Pressure Level 88 dB / 2.83 V (m) Impedance 4 Ω Input Power (IEC) 150 W (Rated), 300 W (Max) Dimensions (W x H x D) 408 x 1260 x 522 mm (including net and terminals) 16-1/16 x 49-19/32 x 20-9/16 inch (including net and terminals) Weight Approx. 72 kg (/pc) Approx.159 lbs. (/pc) Accessories Spike x 4, Spike Support x 4, Short Cable x 2, Cleaning Cloth x 1, Spacer x 4, Owner's Manual

Mid Detail ProAc have improved the mid-range detail and a opened up a cleaner, faster and more extended bass response. A new studio monitor quality bass driver was designed for the D48, featuring a special impregnated cone and mid frequencies tuned by a cap of greater size than standard. This gives the new unit greater mid-range detail along with excellent bass control giving a tighter and more extended response. Dual Bass The two new bass drivers are each loaded through ProAc's special floor loading with side vents, this makes the loudspeaker easier to place and reacts less to surroundings. The two bass units are then seamlessly mated to our ribbon or dome tweeter depending on your preference. With such a large slim floor standing design the sound stage is superb being very large and with pinpoint imagery. Another achievement for the D48 is its ability to create large orchestral works as well as heavy rock music. HQ Filter The D48 has a high quality filter network designed by Stewart Tyler comprising of the finest components, ProAc cable on a special board. The filter is also split for bi-amping and bi-wiring. This is one of the best designs from ProAc and should please all audio files regardless of their taste in music. D40 Legacy The ProAc Response D48 is built to replace the immense flagship Response D40, and has some big shoes to fill! ProAc aren't in the business of making tweaks and changes for the sake of it, so for all purposes the D48 is a wholly new speaker. ProAc have moved away from the carbon fibre cone material utilised on the D40, instead opting for a carbon fibre pulp which delivers improved midrange frequency reproduction as well as tighter bass with less low frequency hangover. Enhanced Sound These differences give the listener a more detailed, open midrange and a more expansive soundstage. Also, the leading edge of bass instruments is more audible with less muddling in comparison to other carbon fibre based drivers. The cabinet used for the D48 is the same size as the outgoing D40. Performance Nominal Impedance: 4 ohms Recommended Amps: 10 to 250 Watts Frequency Response: 20Hz to 30Khz Sensitivity: 90 dB linear for 1 Watt at 1m Drivers Bass/Mid: 2 x 6.5" studio monitor design LF/MF: Special coating/dust cap tuning Tweeter: ProAc ribbon 6 x 1cm Light as human hair/ rear chamber damping Crossover HQC: using the dedicated components Wire: Multistrand OFC cable throughout Split: For optional bi-wiring/bi-amping General Mode: Floor standing Grille: Acoustically transparent crimplene Dimensions (HWD): 1200 x 212 x 340mm Weight: 39 Kgs each

Mid Detail ProAc have improved the mid-range detail and a opened up a cleaner, faster and more extended bass response. A new studio monitor quality bass driver was designed for the D48, featuring a special impregnated cone and mid frequencies tuned by a cap of greater size than standard. This gives the new unit greater mid-range detail along with excellent bass control giving a tighter and more extended response. Dual Bass The two new bass drivers are each loaded through ProAc's special floor loading with side vents, this makes the loudspeaker easier to place and reacts less to surroundings. The two bass units are then seamlessly mated to our ribbon or dome tweeter depending on your preference. With such a large slim floor standing design the sound stage is superb being very large and with pinpoint imagery. Another achievement for the D48 is its ability to create large orchestral works as well as heavy rock music. HQ Filter The D48 has a high quality filter network designed by Stewart Tyler comprising of the finest components, ProAc cable on a special board. The filter is also split for bi-amping and bi-wiring. This is one of the best designs from ProAc and should please all audio files regardless of their taste in music. D40 Legacy The ProAc Response D48 is built to replace the immense flagship Response D40, and has some big shoes to fill! ProAc aren't in the business of making tweaks and changes for the sake of it, so for all purposes the D48 is a wholly new speaker. ProAc have moved away from the carbon fibre cone material utilised on the D40, instead opting for a carbon fibre pulp which delivers improved midrange frequency reproduction as well as tighter bass with less low frequency hangover. Enhanced Sound These differences give the listener a more detailed, open midrange and a more expansive soundstage. Also, the leading edge of bass instruments is more audible with less muddling in comparison to other carbon fibre based drivers. The cabinet used for the D48 is the same size as the outgoing D40. Performance Nominal Impedance: 4 ohms Recommended Amps: 10 to 250 Watts Frequency Response: 20Hz to 30Khz Sensitivity: 90 dB linear for 1 Watt at 1m Drivers Bass/Mid: 2 x 6.5" studio monitor design LF/MF: Special coating/dust cap tuning Tweeter: ProAc ribbon 6 x 1cm Light as human hair/ rear chamber damping Crossover HQC: using the dedicated components Wire: Multistrand OFC cable throughout Split: For optional bi-wiring/bi-amping General Mode: Floor standing Grille: Acoustically transparent crimplene Dimensions (HWD): 1200 x 212 x 340mm Weight: 39 Kgs each

ProAc K1 Speakers join the K1 range to celebrate their 10th year of production. This standmount speaker features a modified cabinet, 6.5 inch Kevlar coned mid-bass driver and classic ribbon tweeter for the optimum sound performance. Standmount Design This new bookshelf speaker has undergone specific performance enhancing modifications to the cabinet and driver units to ensure the best performance from the standmount design. The mid-bass driver delivers an incredible extended and powerful bass whilst the midrange sounds absolutely stunning. Open and Accurate Sound The two drivers are effortlessly integrated thanks to a high quality crossover section, and this speaker, although small is capable of an electric performance with impressively open soundstage and exceptionally accurate bass. You can expect reference level stand mount sound quality from these speakers. Elegant Design The K1 speakers are housed in a super slim and elegant cabinet specially constructed for excellent rigidity and damping and are available in a range of real wood finishes. Choose from black ash, mahogany, cherry, walnut, oak and silk white as standard or rosewood, ebony, tamo ash, dark eucalyptus can be ordered at extra cost - Nominal Impedance: 8Ω - Recommended Amplifiers: 10 - 150W - Frequency Response: 28Hz - 30kHz - Sensitivity: 90dB linear for 1 Watt at 1 Metre - Bass/Midrange Drivers: Bass and midrange frequencies are both covered by a single 165mm (6.5”) Kevlar coned unit, the Kevlar cone covers all frequencies up to 3Khz and slightly above. - Tweeter: ProAc ribbon with diaphragm as light as a human hair, alnico magnet and rear chamber damping - Crossover: Finest components on dedicated dual layer circuit board. ProAc multistrand oxygen free copper cable throughout. Split for optional Bi Wiring or - Bi Amplification - Height: 569mm (22.4”) - Width: 264mm (10.4”) - Depth: 401mm (15.8”) - Weight: 16kg (2.2lb) each - Mode: Stand Mounting - Grille: Acoustically transparent crimplene

The foundation of the JBL S4700 is an all-new 15" cast frame woofer (2216Nd) with a powerful 3" dual voice coil and neodymium motor structure for excellent balance with the horn-loaded compression drivers. Mid and high frequencies are reproduced by a pair of titanium diaphragm compression drivers and a one-piece dual SonoGlass® horn assembly. The 2-inch Aqua-Plas™-coated titanium (175Nd-3) diaphragm compression driver is coupled to a 90° x 60° Bi-Radial® horn, delivering mid and high frequencies with lifelike dynamics and startling realism. While a 0.75" titanium diaphragm compression driver (138Nd) with a 60° x 30° bi-radial horn provides the spaciousness. High-quality crossover components and two cable connections ensure audiophile performance in every application. The attractive cherry veneer cabinet is internally braced at critical points and is tuned via a rear port. The S4700 is intended for use in high performance 2-channel audio systems or as an LCR loudspeaker in a JBL Synthesis multi-channel home theater installation. Model: JBL S4700 Typ: 3-way floorstanding speaker Frequency Response: 38Hz – 40kHz (-6dB) Recommended amplifier power: 300W RMS Sensitivity (2.83V @ 1m): 94dB Impedance: 6 Ohm crossover frequency: 800Hz, 12kHz Dimensions (W x H x D): 1068 x 500 x 371 mm Weight: 54.5 kg

The benchmark of benchmarks Since 1973, The Reference has continually set the benchmark for loudspeakers and sound reproduction. Pioneering the use of digital technologies to achieve the highest audio accuracy, every pair can be matched within 0.5dB to the laboratory-maintained reference standard. Always innovating Since the first Reference speaker, KEF engineers have continued to innovate using what is possible with The Reference. Ground-breaking in its first incarnation, each subsequent iteration of The Reference has added to the world’s knowledge of the science of acoustics. Designed, engineered and handcrafted in UK Since 1961, we have been creating remarkable award-winning loudspeakers at our UK home in Maidstone, Kent. As our flagship HiFi speakers, The Reference is still being designed, engineered, and handcrafted in Maidstone today. KEF Reference 3 Meta speakers are the latest version of these excellent floorstanders, perhaps the sweet spot in the Reference range - offering greater low frequency extension over Reference 1 Meta, in a more compact size than Reference 5 Meta, making them well suited to most rooms. In their pursuit of that extra marginal gain in an audio world – KEF have taken their already outstanding Reference 3 Meta floor-standing speakers and elevated them to a new level of performance with the introduction of MAT (Metamaterial Absorption Technology). The Summit Of Standards You can trace the lineage of the Reference 3 Meta back to the 1970’s when KEF and their master craftsman created the first in a long line of award-winning floor-standing speakers where quality and design were unleashed to create the ultimate statement and marriage of design and audio technology. Fast forward to today and the Reference 3 Meta represents the newest generation of the KEF family. All the time retaining what made KEF so revered and adored by audiophiles and those who just want a damn good speaker alike. A New Metaverse On the Reference 3 Meta, the drive units are in a 12th generation Uni-Q drive array with the high-frequency 25mm (1”) aluminium dome unit being equipped with Metamaterial absorption technology (MAT) which is a radical departure and change that the speaker world sees once in a generation. MAT delivers a 99% absorption rate from the rear of the drive unit – effectively wiping out distortion in a single stroke giving you the purest listen, you can ever want. Superb Driving The drive units alongside the high-frequency driver (in the Uni-Q array) are designed to perfectly work with each other with a 125mm (5”) aluminium cone, which itself delivers a fantastic response across the spectrum, which when paired with a bass unit that itself is a pair of 165mm (6.5”) cones that make the Reference 3 Meta a true champion of sound Excellent Response Frequency response on the Reference 3 Meta is outstanding with the short port giving you a response of 38Hz – 45kHz (-6dB) and the longer port giving you a response of 35Hz to 45kHz (-6dB) which ensures a complete coverage from a bookshelf style speaker that has never been seen or felt before. Power To The Speakers With all this technology packed into a small speaker cabinet, you would think that these units would require a lot of power from an amplifier, but that is not the case with these speakers as they require 50 – 300W maximum, meaning they will happily work with any amplifier. Design Three-way bass reflex Drive units Uni-Q driver array: HF: 25 mm (1 in.) aluminium dome with MAT MF: 125 mm (5 in.) aluminium cone Bass units: LF: 2 x 165 mm (6.5 in.) aluminium cone Frequency range free field (-6dB) Short port: 38Hz - 45kHz Long port: 35Hz - 45kHz Frequency range typical in room bass response (-6dB) 28Hz Frequency response (±3dB) 43Hz – 35kHz Crossover frequency 450 Hz, 2.1 kHz Amplifier requirements 50 - 300W Sensitivity (2.83V/1m) 86dB Harmonic distortion 2nd & 3rd harmonics (90dB, 1m) <0.5% 40Hz – 100kHz <0.2% 200Hz – 2kHz <0.1% 2kHz - 20kHz Maximum output (peak sound pressure level at 1m with pink noise) 113.5dB Impedance 4 Ω (min. 3.2 Ω) Weight 51.3 kg (113.1 lbs.) Dimensions (H x W x D)(with grille and terminal) 1155 x 205 x 462 mm(45.5 x 8.1 x 18.2 in.)

Nothing looks, or sounds, quite like Nautilus. A revolution when it launched and still an icon today. Its ethos informs everything we do. Nautilus comes in three standard colors: midnight blue, black, and silver. We also offer a special service that can match any color from a sample or color reference. Redefining sound The long, tapered damping tubes were a revolution, allowing the drive units to work optimally by gently absorbing stray energy. Shaped by sound At a glance, you can see Nautilus is no ordinary speaker, and after nearly three decades it still defines high-end audio. Making magic Constructing the complex shapes and precision drive units demands decades of experience and exacting attention to detail. Crafting a classic Nautilus speakers are hand-built to order, alongside the 800 Series Diamond™, by a dedicated specialist team in the Worthing factory. Infinite colors Nautilus comes in three standard colors: silver, black and midnight blue. But, as befits such a unique speaker, we also offer a special service that can match any color you specify. Setting the standard for the future The striking spirals and tubes of Nautilus came from our research into making speaker drive units behave as we wanted: this Nautilus Tube technology, for which we won a Queen's Award for Innovation, is now found in almost every speaker we make. Thinking beyond the box Nautilus is quite unlike a conventional box speaker: to package our unique Nautilus tubes for use in the home, our designers developed the striking, and space-efficient, spiral form from which the speaker takes its name. But why the Nautilus tube? We want to hear a speaker driver, not its side-effects – conventional boxes contain sound from the rear of the driver, but bring their own problems. Nautilus tapering tubes soak up wayward energy and reduce resonances to the point of insignificance. Specifications Nautilus™ tube loading Active crossover System 4-way tube-loaded loudspeaker system Drive Units 1x 300mm (12 in) aluminium cone bass 1x 100mm (4 in) aluminium/polymer sandwich cone lower midrange 1x 50mm (2 in) aluminium dome upper midrange 1x 25mm (1 in) aluminium dome high-frequency Frequency range -6dB at 10Hz and 25kHz Dispersion Within 2dB of response on reference axis Horizontal: over 60° arc Vertical: over 10° arc Crossover frequency 220Hz, 880Hz, 3.5kHz Power amplifier requirements 4 channels per speaker, rated100W-300W continuous into 8Ω on unclipped programme (each channel to have identical gain and phase) Dimensions Height: 1210mm (47.6 in) Width: 430mm (16.9in) Depth: 1105mm (43.5 in) Net weight Speaker: 44.5kg (98lb) Plinth: 42kg (92lb) Total: 86.5kg (190lb)

The benchmark of benchmarks Since 1973, The Reference has continually set the benchmark for loudspeakers and sound reproduction. Pioneering the use of digital technologies to achieve the highest audio accuracy, every pair can be matched within 0.5dB to the laboratory-maintained reference standard. Always innovating Since the first Reference speaker, KEF engineers have continued to innovate using what is possible with The Reference. Ground-breaking in its first incarnation, each subsequent iteration of The Reference has added to the world’s knowledge of the science of acoustics. Designed, engineered and handcrafted in UK Since 1961, we have been creating remarkable award-winning loudspeakers at our UK home in Maidstone, Kent. As our flagship HiFi speakers, The Reference is still being designed, engineered, and handcrafted in Maidstone today. Design Three-way bass reflex Drive units Uni-Q driver array: HF: 25 mm (1 in.) aluminium dome with MAT MF: 125 mm (5 in.) aluminium cone Bass units: LF: 4 x 165 mm (6.5 in.) aluminium cone Frequency range free field (-6dB) Short port: 35Hz - 45kHz Long port: 32Hz - 45kHz Frequency range typical in room bass response (-6dB) 25Hz Frequency response (±3dB) 40Hz – 35kHz Crossover frequency 450 Hz, 2.1 kHz Amplifier requirements 50 - 400W Sensitivity (2.83V/1m) 88dB Harmonic distortion 2nd & 3rd harmonics (90dB, 1m) <0.5% 40Hz – 100kHz <0.2% 200Hz – 2kHz <0.1% 2kHz - 20kHz Maximum output (peak sound pressure level at 1m with pink noise) 116dB Impedance 4 Ω (min. 3.2 Ω) Weight 60.2 kg (132.7 lbs.) Dimensions (H x W x D)(with grille and terminal) 1350 x 205 x 462 mm(53.1 x 8.1 x 18.2 in.) Dimensions (H x W x D)(with grille, terminal & plinth) 1402 x 323 x 467 mm(55.2 x 12.7 x 18.4 in.) Downloads Information SheetManualWhite Paper