Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Distribution amplifier
open-in-new
<h2 id="audio-distribution-amplifier">Audio distribution amplifier</h2> <p>An audio distribution amplifier also known as: a press feed; a pool feed; a media feed; press box; or an ADA, takes a single audio feed, usually a line input, but it may be a microphone input, and outputs multiple line or microphone outputs. This can be done using a passive feed, where the signal is split among the outputs, or as an active feed where the outputs are amplified. The primary use of the Audio Distribution Amplifier is to share a single audio feed with multiple members of the <a href="/facts/Press_pool/TBNo2Fea">press pool</a>.<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a> </p> <h2 id="video-distribution-amplifier">Video distribution amplifier</h2> <p>A video distribution amplifier (also known as a distribution amp or VDA) takes a video signal as an input, amplifies it, and outputs the amplified video signal to two or more outputs. It is primarily used to supply a single video signal to multiple pieces of video equipment. It adjusts the <a href="/facts/Amplitude/aEckuXJM">amplitude</a> of a video signal to compensate for loss of signal in a video distribution system. Extending the distance of the video signal is the main purpose of the VDA. There are VDAs built for all video formats, <a href="/facts/NTSC/HYWIvxCR">NTSC</a>, <a href="/facts/ATSC/RIYWmB7v">ATSC</a>, QAM16, QAM32, QAM64, <a href="/facts/Composite_video/FIsE6mBz">composite video</a> and <a href="/facts/Component_video/UEXxJ2gy">component video</a>. </p><p>Their construction and capabilities can be simple; accept input signal, amplify, then output. Others can be more sophisticated and allow remote control from a control station, allow adjustment of the gain, equalization, and provide status of the input and output signals through Ethernet networks. </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Microphone_splitter/mwylqVAb">Microphone splitter</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://www.amplifiersite.com/distribution-amplifier/">Info about some very common distribution amplifier types.</a> <a href="https://web.archive.org/web/20100922095316/http://www.amplifiersite.com/distribution-amplifier/">Archived</a> 2010-09-22 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a></li> <li><a href="https://web.archive.org/web/20120915110618/http://www.octavainc.com/HDMI%20switch%20Insiders%20Guide.htm">Guide to HDMI Distribution Amp, switches and matrix</a></li> <li><a href="http://whirlwindusa.com/catalog/ac-power/press-boxes">Press feeds from distributor Whirlwind USA.</a> <a href="https://web.archive.org/web/20170303050029/http://whirlwindusa.com/catalog/ac-power/press-boxes">Archived</a> 2017-03-03 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Description of than early Media Pool Feed http://vvc.ca/about-us/history/#mediafeed <a href="http://vvc.ca/about-us/history/#mediafeed" target="_blank">http://vvc.ca/about-us/history/#mediafeed</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>