The results of this research have come to fruition in the shape of the new K series which utilises cones manufactured from the material, Kevlar.
Following the successful incorporation of carbon fibre cone technology in the Carbon Pro Series, ProAc have been researching other materials for possible inclusion in their high end loudspeakers.
Kevlar benefits from having similar properties to carbon fibre, being 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.
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 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: 90 dB linear for 1 watt at 1 metre
Bass Driver: 2 x 61/2" (165mm) studio professional drive units with polymer impregnated Kevlar cones and Zinc basket
Midrange Driver: 2" (50mm) soft dome with 6061 Aluminium Alloy Front Plate
Tweeter: ProAc ribbon with diaphragm 'as light as a human hair' alnico magnet and rear chamber damping and 6061 Aluminium Alloy Front Plate
Crossover: Finest components on dedicated dual layer circuit board; ProAc multistrand oxygen-free copper cable throughout; Split for optional bi-wiring and bi-amping
Dimensions: 46" high (1185mm) with spikes and plinths, 8.5" (215mm) wide, 13.5" (340mm) deep
Weight: 97 lbs (44 Kgs) each
Mode: Floorstanding on spikes
Grille: Acoustically transparent crimplene
Finish: Black Ash, Cherry, Mahogany, Maple & Ebony