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Sennheiser MD 421 microphone, original light gray model. The Sennheiser MD 421 is a German cardioid dynamic microphone, widely used for speech in broadcasting and for music in live concerts and the recording studio. Introduced in 1960, the internal large-diaphragm transducer element of the MD 421 is still produced unchanged by Sennheiser.
The Neumann U 87 is a poly-directional large-diaphragm condenser microphone. Originally introduced in 1967, a version of the U 87 is still produced by Georg Neumann GmbH. The U 87 became an industry standard recording microphone, a reputation that continues to endure. [1] [2] The U 87 was inducted into the TECnology Hall of Fame in 2006. [3]
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]
Microphone diaphragms, unlike speaker diaphragms, tend to be thin and flexible, since they need to absorb as much sound as possible. In a condenser microphone, the diaphragm is placed in front of a plate and is charged. [2] In a dynamic microphone, the diaphragm is glued to a magnetic coil, similar to the one in a dynamic loudspeaker.
The company's original product was the CMV 3. It was a rather large (40 cm tall, 9 cm diameter) [1] microphone with interchangeable capsule heads. Because of its shape and size, this microphone was often known as the "Neumann bottle". It is often seen in historical photographs of public events in Germany through the period of World War II.
Foil-type or diaphragm-type A film of electret material is used as the diaphragm itself. This is the most common construction. It is often considered the lowest quality, as the electret material used sometimes does not make a particularly good diaphragm. Modern materials have enabled very comparable performance to other designs. Back electret
For small diaphragm microphones such as the Shure (also pictured above), it usually extends from the axis of the microphone commonly known as "end fire" or "top/end address". Some microphone designs combine several principles in creating the desired polar pattern.
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.