In the early sixties Ortofon was the moving coil manufacturer with the SPU range comprising three models: E (elliptical stylus), G (standard SME-fit G-shell) and T (with or without step-up transformer). The SPU also has a new elliptical needle, which gives a somewhat lower wear at approx. Quite simply, there is no finer complement to a classic tonearm with a detachable headshell than an Ortofon SPU. (Universal joint design is no longer used in the production of Moving Coil phono cartridges).Ī key SPU feature is an integrated headshell, designed to mount directly into classic tonearms with detachable headshells - tonearms such as the SME 30, and other tonearms with similar "universal" tonearm mounts. The armature was connected to a common cantilever via an extremely complicated universal joint with sapphire bearings. This first stereo cartridge actually consisted of two parallel-mounted cartridges. Robert Gudmandsen took a principal part in developing this cartridge.
SME TONEARM TIMELINE PROFESSIONAL
Based on Ortofon’s already 10 year old technology and experience in mono cartridges, the SPU immediately set the standard for professional and audiophile applications. The original SPU was introduced in response to the demand for cartridges to reproduce the new stereo records. Then-CEO of Ortofon Eric Rohmann on the left awards the Danish Queen Margrethe II's merit medal to Robert Gudmandsen on the right → Gudmandsen's signature printed in both A and G-models. Gudmandsen was also awarded by the Danish Queen Margrethe II, and Ortofon decided in his honor to launch the SPU Meister cartridge with Mr. SPU in Japan, because of his basic and innovative work on the mono moving coil and later stereo cartridges. At that time he had already got the nickname Mr. Gudmandsen, because of his 50 years of work for the Ortofon. 10 years later Robert Gudmandsen, one of Ortofon’s then leading engineers, took a principal part in developing of the SPU cartridge. Gudmandsen had been deeply involved in the basic Ortofon Mono MC system.
Later he was engaged in the development and production of condenser microphones.
Initially, Robert Gudmandsen worked on producing a dynamic amplifier for a local radio station. He started his career as a radio engineer in a company where his father also worked, and he was later brought to Ortofon by Arnold Poulsen, one of the founders of Ortofon.
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