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Loudspeaker, moving iron

Loudspeaker, Allison type moving iron, by C.A. Vanderwell of Acton, c. 1924, with an impedance of 2000 ohms, and a horn made of metal and celluloid coloured to simulate tortoiseshell

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Advanced search Search terms must be longer than two characters. Use a * as a wildcard to widen your search (for example, bagpipe* will find bagpipe, bagpipes and bagpiper).