LS Concert

At 2.49 m it is the tallest speaker in the catalogue, and the height is the engineering rather than the theatre: tweeters and midranges stacked in a vertical line array radiate as a line rather than a point, so level falls off far more slowly down a room and the back row hears what the front row hears. Open-baffle and dipole like the Model D, with bass left entirely to boundary woofers — which is how the published range starts at 120 Hz and the equivalent output reaches 132 dB.