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Gulbransen Rialto (Wikipedia)

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  • Gulbransen Rialto

    Organ · United States

    The Gulbransen Rialto (Model K) was the company's best-known electronic organ and is regarded as the first electronic theatre organ. Designed to recreate the sound of a Wurlitzer-style theatre pipe organ, it used two auxiliary Leslie rotating speakers rather than an internal amplifier and speaker system.

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  • Gulbransen

    Gulbransen was an American maker of pianos and home and theatre organs, established in 1904 in Chicago by Axel Gulbransen. After early fame for player pianos, the company became a leader in electronic home organs, introducing what it billed as the world's first all-transistor organ in 1957 and a series of home and theatre organ innovations through the 1960s.