Product details
KEF’s LS50 Meta is a passive two-way bookshelf loudspeaker built around a Uni-Q driver array with Metamaterial Absorption Technology. The 25 mm aluminium-dome tweeter sits at the acoustic centre of a 130 mm aluminium mid/bass cone to provide a coherent sound field.
Metamaterial and cabinet engineering
MAT places a maze-like absorber behind the tweeter to reduce unwanted rear-radiated energy. The curved baffle, carefully shaped port and braced enclosure support the driver array while controlling resonances and airflow noise. The bass-reflex design works with the supplied port bungs to help adjust low-frequency behaviour for placement.
Amplification and installation
KEF recommends amplification rated from 40–100 W. Nominal impedance is 8 Ω, with a 3.5 Ω minimum, and sensitivity is 85 dB at 2.83 V/1 m. The speakers can be paired with suitable stands, sold separately. Carbon Black, Mineral White, Titanium Grey, Moss Green and Sand Shell finishes offer different cabinet and driver colour combinations.
