At the time, and subsequently, the hall was celebrated for its superb acoustics, unmatched by any other large hall in London. Soon after its opening, Shaw praised it as "a happy success acoustically". Knightley followed the example of earlier buildings noted for fine acoustics; the walls of the auditorium were lined with wood, fixed clear of the walls on thick battens, and coarse canvas was stretched over the wood and then sealed and decorated. He calculated that the unbroken surface and the wooden lining would be "like the body of the violin – resonant". "The Observer" commented that the building resembled a violin in construction and shape, and also that "the ground plan of the orchestra was founded on the bell of a horn".