The tweeter radiates as much backwards as forwards. Behind it, a Metamaterial disc pierced with channels of differing lengths traps that rear wave and dissipates it as heat: 99% of the high-frequency energy never returns to the cone. What remains is the signal.
A three-way bookshelf speaker remains rare: a bass-midrange driver, a midrange and a tweeter all have to fit into 415 mm of height. The Q Concerto manages it by giving the midrange to the Uni-Q and the bass to a dedicated driver, with crossovers at 430 Hz and 2.9 kHz. The midrange no longer shares the cone that makes the bass.
The bass reaches down to 40 Hz at −6 dB — lower than the Q3 and its 42 Hz, in a cabinet barely larger. The trade-off lies in the sensitivity: 85 dB, the lowest figure in the Q range. It takes 15 to 180 W to drive.
415 × 210 × 315 mm for 9.5 kg: the Q Concerto weighs more than the Q3 without becoming a floorstanding speaker. The impedance falls to 3.2 Ω at minimum. Maximum output stops at 108 dB, which suits it to seated listening rather than to a party.
Data sheet
Specific References
KEF SQ1 aluminium floor stand for the Coda W, Q1 Meta, Q3 Meta and Q Concerto Meta speakers. Fillable column, internal cable routing, sold as a pair.
KEF B1 wall mount for LSX, LSX II, LSX II LT speakers. Adjustable tilt 40°, 90° rotation, aluminum construction. Available in Black and Silver. Sold individually.
KEF S-RF1 aluminium floor stand for Reference 1 Meta, with speaker cable management routed inside the pillar. Sold individually, in Carbon Black or Mineral White.
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