KEF - LS50 Meta (Pair) The World's First Speakers with Metamaterial LS50 Meta is a highly precise, emotionally engaging loudspeaker built on revolutionary acoustic technology. Designed around the Uni-Q 12th Generation with Metamaterial Absorption Technology driver array, this solid, compact loudspeaker is capable of delivering detailed sound anywhere in the room. Performance - Most accurate, immersive sound Metamaterial Absorption Technology eliminates 99% of high-frequency distortion for pure, natural sound. 12th generation Uni-Q with MAT driver array for exceptional acoustic accuracy. Driver Performance Optimisation for enhanced sonic performance, less distortion and reduced coloration. Patented off-set flexible port for reduced midrange coloration with exceptional levels of depth and detail. Design - Attention to every detail Every aspect of LS50 Meta has been considered for acoustic benefits and from a design perspective. The low-diffraction curved front baffle is subtly mirrored by the gently radiused rear panel, where both the port exit and speaker terminals have been elegantly recessed and softened visually. Feature Set Includes: (SOLD AS A PAIR) Model LS50 Meta Design Two-way bass reflex Drive Units Uni-Q Driver Array:HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption TechnologyMF/LF: 130 mm (5.25 in.) aluminium cone Crossover Frequency 2,1 kHz Frequency Range (-6db) 47 Hz - 45 kHz Typical In-room Bass Response (-6db) 26 Hz Frequency Response (±3db) 79 Hz - 28 kHz Harmonic Distortion (90dB, 1m)