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Neumann U 87 with shock mount. Introduced in 1967 as the solid-state successor to the U 67, [4] [5] [1] Neumann introduced the U 87 alongside the KM 86, KM 84, and KM 83 as part of the company's first 'FET 80' series of microphones that utilized use solid-state FET electronics that didn't require separate power supplies or multi-pin power cables and allowed the mics to be made smaller. [6]
Eventually this "fet 100" or "transformerless" series was expanded to include the KM 100 modular series of small microphones (with seven different "active capsules" for various directional patterns), the cardioid TLM 193 (using the capsule of the U 89 and TLM 170), the small-diaphragm KM 180 series, the large-diaphragm cardioid TLM 103, the ...
The Neumann U 47 is a large-diaphragm condenser microphone. It is one of the most famous studio microphones and was Neumann's first microphone after the Second World War. The original series, manufactured by Georg Neumann GmbH between 1949 and 1965, employed a tube design; early U 47s used the M 7 capsule, then replaced by the K 47 from 1958.
This microphone used large Neodymium magnets to achieve unprecedented raw transduction sensitivity. Also, a unique phantom-powered preamplifier with proprietary voicing gave the microphone a sound presentation similar to large-diaphragm condenser microphones but having the well-known dynamic qualities unique to ribbon microphones.
Designed by Electro-Voice using the company's patented Variable-D technology and a large-diaphragm element, it has been described as an industry standard "iconic" microphone for its natural sound and its wide usage in radio, television and recording studios. [1] In 2015, the RE20 was inducted into the TEC Awards Technology Hall of Fame. [2]
The diaphragm of the 77-DX and other early RCA ribbon microphones is a very thin (2.5 microns) metal ribbon crimped with 19 pitch 90-degree perpendicular corrugations. [4] This very lightweight ribbon is suspended under very little tension.