RCA Type 77-A microphone

RCA Type 77-A microphone

The RCA Type 77-A microphone was a simplex ("uni-directional") ribbon microphone, the forerunner of the RCA Type 77-DX microphone. The 77-A was designed Dr. Harry F. Olson sometime during the late 1920s or early 1930s; prototypes are rumored to have existed in 1929 and 1930, but the 77-A was not announced until 1932.

The 77-A would set the standard for all other RCA ribbon microphone comparisons for the next 40 years.

Construction

It featured an acoustic labyrinth inside the case and two vertical in-line ribbons which enabled it to be uni-directional.

ee also

*RCA
*RCA Type 77-DX microphone

External links

* [http://www.coutant.org/antler/index.html RCA Type 77-A information from www.coutant.org]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • RCA Type 77-DX microphone — The RCA Type 77 DX microphone is a poly directional ribbon microphone once made by the RCA Corporation. Its design has inspired the stereotypical microphone icon. Throughout the 1950 s and 1960 s, phonograph record album cover photos show artists …   Wikipedia

  • Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …   Wikipedia

  • Microphone à ruban — Schéma du principe du microphone à ruban. B = ruban. N et S = pôles de l entrefer magnétique …   Wikipédia en Français

  • Microphone a ruban — Microphone à ruban Schéma du principe du microphone à ruban. B = ruban. N et S = pôles de l entrefer magnétique. Le microphone à ruban fonctionne selon le même principe que le microphone à bobine mobile, c est à dire qu il convertit une variation …   Wikipédia en Français

  • Microphone À Ruban — Schéma du principe du microphone à ruban. B = ruban. N et S = pôles de l entrefer magnétique. Le microphone à ruban fonctionne selon le même principe que le microphone à bobine mobile, c est à dire qu il convertit une variation de …   Wikipédia en Français

  • Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

  • Nuvistor — RCA 6DS4 Nuvistor triode vacuum tube, ca. 20 mm high and 11 mm in diameter. The nuvistor is a type of vacuum tube announced by RCA in 1959. Most nuvistors are basically thimble shaped, but somewhat smaller than a thimble. Triodes and tetrodes… …   Wikipedia

  • Gramophone record — A 12 inch (30 cm) 33⅓ rpm record (left), a 7 inch 45 rpm record (right), and a CD (above) A gramophone record, commonly known as a phonograph record (in American English), vinyl record (in reference to vinyl, the material most commonly used after …   Wikipedia

  • TRS connector — 1⁄4 in TRS connector Trip …   Wikipedia

  • Perry Como — on The Perry Como Show set, 1956. Background information Birth name Pierino Ronald Como …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”