Record changer

[2] In 1928, the Waterworths traveled to London, where they sold their patent to the new Symphony Gramophone and Radio Co. Ltd.[3] Eric Waterworth built three prototypes of his invention, one of which was sold to Home Recreations as a model for its proposed Salonola record player as cited above, which is now reportedly in the collection of the Museum of Applied Arts & Sciences in Sydney.

After Eric's death, the family found the disassembled parts of the machine and offered them to the Sound Preservation Association of Tasmania.

This prototype record changer is now on display at the Sound Preservation Association of Tasmania resource centre in the Hobart suburb of Bellerive.

[5][2] The first commercially successful record changer was the "Automatic Orthophonic" model by the Victor Talking Machine Company, which was launched in the United States in 1927.

By the late 1950s, Garrard (of Britain) and Dual (Germany) dominated the high-end record changer market in the United States.

[7] Most VM record changers were sold to OEM audio manufacturers such as Zenith and installed in console-sized, portable or compact low- to mid-priced stereo or mono systems.

[7][8] By the mid to late 1960s, a British company BSR–MacDonald displaced VM as the world largest record-changer manufacturer and dominated the OEM changer market in the US as well.

Garrard, in 1960, introduced a high fidelity record changer with a professional grade balanced tonearm and heavy cast non-magnetic platter, both features previously found only on manual turntables.

Other record changers, including some made as far back as the 1930s by RCA and GE in addition to the much later Thorens TD-224, were capable of reversing the stack automatically.

Some radio station copies were produced in "relay sequence" to be played by a DJ on two turntables with no break between sides, which were coupled as 1&3, 2&4, 5&7 and 6&8.