
BBC LSU/10 Studio Loudspeaker
1948-1955
1948-1955
1965
circa 1936
1930-1934
1978
1965-1967
1946-1960
1929-1935
1955
1964-1967
1965
1950-1955
1903-1913
1933
1963-66
1955
1950
1932-1942
1929
1934
1927
1934
1930
1932
1925-1935
1967
nd.
circa 1940
1963
1928-1935