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Pell, Rich (April 21, 2010). "The RCA phono plug: An outdated relic?". EETimes . Retrieved March 8, 2017. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.
Models R-96 and R-97: Three-Tube, A-C, Electric Phonographs". RCA Victor Service Notes for 1937 Broadcast Radio Receivers, All-Wave Radio Receivers, Phonograph Combination Instruments, and Miscellaneous Service Information (PDF) (1sted.). RCA Manufacturing Company. p.290. While these are the standard colors found on commercially made products, cables with different-colored connectors may be used, as long as the cable itself is compatible with the application (for example, cables with 75 ohms impedance for video and S/PDIF).When connecting the male into the female, the inner hot (signal) connection is made before the ground connection has been guaranteed; this often produces a loud buzz if the equipment is active when the connection is made. The exact release date of this connector is still a little vague. The following dates were derived from historical RCA documentation.
The hot signal wire and signal ground provided by an RCA connection implement an unbalanced connection. A true balanced connection is generally preferred in certain applications, particularly professional settings because it allows for the use of long cables while reducing susceptibility to external noise. a b Richardson, Paul (June 1938). "Improved Electric Tuning For All Is Keystone of New RCA Victor Standard Line of Domestic Models" (PDF). RCA Globe Trotter. Vol.2, no.3. p.15. Disadvantages [ edit ] "Bullet plug" variation – Note the hollow center conductor and the pin point for the return signal.Consumer Electronics Association standard CEA-863-B - Connection Color Codes for Home Theater Systems, CEA, February 2011, archived from the original on 2011-07-12 , retrieved 2011-08-27
