KEF LS50 pt. 1 Introduction

KEF LS50 pt. 2 Listening Sessions with Discussion

KEF LS50 pt. 3 Sonic Evaluation


Available from:
KEF International


The KEF LS50 is a groundbreaking loudspeaker that sounds like real life. Do not let its small size fool you.  It sounds like a large loudspeaker.

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.)
This is an outstanding product that you must audition if you value the sonic truth in a small package.