KEF Blade I Single Apparent Source Loudspeaker. Three-way bass reflex. Single source driver configuration. Uni-Q array: 5'' MF, 1'' HF, 9'' LF x 4.
BLADE shares a new architecture that achieves the ideal point source, with the four sophisticated bass drivers (225mm/9") configured so that their combined acoustic centre occupies exactly the same point in space as that of the Uni-Q HF/MF array so the sound appears to emanate from a single, flawlessly coherent source.
Sculptural and acoustically inert, the slender parabolic enclosures are engineered never to interfere with the purity of the output. Inside, you find ingenious new venting, bracing and wave management technologies. Every component operates so comfortably within its performance envelope that you experience noticeably more precise imaging than is possible with conventional speakers.
Just as KEF's philosophy has always been to innovate in pursuit of the most accurate and realistic sound, BLADE speakers are about perfecting a ground-breaking concept to delight people who really love music. Whatever your taste, BLADE is what all great design aspires to: being the best they can possibly be.
-Design Three-way bass reflex, single apparent source driver configuration
-Drive Units Uni-Q driver array:
-MF: 125mm (5") Li-Mg-Al /LCP hybrid cone
-HF: 25mm (1") Al dome
-LF: 4 x 225mm (9") with force cancelling
-Frequency Range 28Hz ~ 45kHz (-6dB) free field
-20Hz (-6dB) typical in room bass response
-Frequency Response 40Hz ~ 35kHz ± 3dB (-6dB at 28Hz)
-Crossover Frequencies 350Hz, 2.3kHz
-Maximum Output 117dB (peak sound pressure level at 1m with pink noise)
-Amplifier Requirements 50 ~ 400W
-Sensitivity 91dB (2.83V/1m)
-Harmonic Distortion 2nd & 3rd harmonics (90dB, 1m)
-Impedance 4Ω (min.3.2Ω)
-Dimensions 1590 x 363 x 540mm/62.5" x 14.3" x 21.2" (with plinth H x W x D)
-Weight 57.2kg (126lbs)