KEF

KEFKEF BLADE TWO

blade_two

Model BLADE TWO
Design Three-way bass reflex
Single apparent source
driver configuration
Drive Units Uni-Q driver array:
MF: 125mm (5in.) Li-Mg-Al /LCP hybrid cone
HF: 25mm (1in.) Al dome
Bass units:
LF: 4 x165mm (6.5in.) aluminum
Frequency range free field (-6dB) 34Hz – 45kHz
Frequency range typical in room bass response (-6dB) 25Hz
Frequency Response (±3dB) 40Hz – 35kHz
Crossover frequency 320Hz, 2.4kHz
Amplifier requirements 50 – 400W
Sensitivity (2.83V/1m) 90dB
Harmonic distortion 2nd & 3rd harmonics (90dB, 1m) <0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz
Maximum output (peak sound pressure level at 1m with pink noise) 116dB
Impedance 8 Ohms (min. 3.2 Ohms)
Weight 41 kg (90.2 lbs)
Dimensions – with plinth (H x W x D) 1461 x 338 x 475mm
57.5 x 13.3 x 18.7 in

KEF REFERENCE

kef_ref Kef_ref_whitekef_ref_line

Ref_1_rosewood

LS50smallKEF LS50 Loudspeaker, $1499.99/pair

LS50-Stereophile-BestAwards-2013

Stereophile-LS50Winner: OVERALL PRODUCT OF 2013

Winner: BUDGET COMPONENT OF 2013

http://www.soundstageglobal.com/index.php/shows-events/high-end-2012-munich-germany/88-high-end-2012-features/252-kefs-killer-compact-monitor-the-ls50

Design Two-way bass reflex
Drive units Uni-Q driver array:
HF: 25mm (1in.) vented
aluminium dome
LF/MF: 130mm (5.25in.)
magnesium/aluminium alloy
Frequency range (-6dB) 47Hz – 45kHz
Frequency response (±3dB) 79Hz – 28kHz
Crossover frequency 2.2kHz
Amplifier requirements 25 – 100 W
Sensitivity (2.83V/1m) 85dB
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m)
<0.4% 175Hz-20kHz
Maximum output 106dB
Nominal impedance 8Ω (min. 3.2Ω)
Weight 7.2kg (15.8lbs.)
Dimension (H x W x D)
(with terminal)
302 x 200 x 278 mm
(11.9 x 7.9 x 10.9 in.)

kef_ls50_overviewKEF_LS50_3_zoomin

KEF

KEF R900 Loudspeaker, $4999.98/pair

http://www.goodsound.com/index.php/equipment-reviews/456-kef-r900-loudspeakers
Conclusions
KEF’s R900 is exemplary. Its sound is linear and coherent from bottom to top, offering more than a glimpse of what the best loudspeakers offer, and at what must be considered an affordable price. It has no real shortcomings, only an abundance of strengths — and an emphatic recommendation from a writer usually allergic to such things.

Design Three-way bass reflex
Drive units Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 2 x 200mm (8in.) aluminium
Frequency range (-6dB) 35Hz – 45kHz
Frequency response (±3dB) 40Hz – 28kHz
Crossover frequency 400Hz, 2.9kHz
Amplifier requirements 25 – 250 W
Sensitivity (2.83V/1m) 90dB
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m)
<0.4% 80Hz-20kHz
Maximum output 115dB
Nominal impedance 8Ω (min. 3.7Ω)
Weight 29.5kg (65lbs.)
Dimension (H x W x D)
(with grille and terminal)
1130 x 240 x 365 mm
(44.5 x 9.4 x 14.4 in.)
Dimension (H x W x D)
(with grille, terminal & plinth)

r900white r900walnut r900rosewoodRSeriesWalnut RSeriesRosewoodRSeriesBlackKEF