
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 comes back to the cone. What is left is the signal.
950 mm tall for 210 mm wide: the Q7 holds the place of a floorstanding speaker without taking up its width. The crossovers at 440 Hz and 2.3 kHz share the work between three ways. The bass reaches down to 39 Hz at −6 dB.
87 dB of sensitivity and 110 dB of maximum output: the Q7 fills a room where the Q3 would fall short. It calls for 15 to 200 W into 4 Ω, minimum 3.2 Ω. The efficiency comes from cone area, not from a crossover trick.
18.4 kg planted on the floor: the Q7 does not move when the bass works, which counts more than it seems on a slim floorstanding speaker. It measures 315 mm deep, to be allowed for in front of the wall. Three finishes: satin black, satin white, walnut.
Specific References
Pair of KEF B1 wall brackets for LSX II speakers. Direct wall mounting with no furniture or stand, in Black or Silver.
This website uses cookies to ensure you get the best experience on our website