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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 ...
Constant-voltage speaker systems are also commonly referred to as 25-, 70-, 70.7-, 100 or 210-volt speaker systems; distributed speaker systems; or high-impedance speaker systems. In Canada and the US, they are most commonly referred to as 70-volt speakers. In Europe, the 100 V system is the most widespread, with amplifier and speaker products ...
The design of the distributed amplifiers was first formulated by William S. Percival in 1936. [1] In that year Percival proposed a design by which the transconductances of individual vacuum tubes could be added linearly without lumping their element capacitances at the input and output, thus arriving at a circuit that achieved a gain-bandwidth product greater than that of an individual tube.
A sound reinforcement system for a rock concert in a stadium may be very complex, including hundreds of microphones, complex live sound mixing and signal processing systems, tens of thousands of watts of amplifier power, and multiple loudspeaker arrays, all overseen by a team of audio engineers and technicians.
More commonly, commercial systems are employed to accomplish these tasks. Some systems distribute digital audio over Cat5 cable to amplifiers installed in each zone. Others have all equipment centralized and distribute speaker-level audio from the "headend" equipment location. Manufacturers of such equipment include NuVo and Zon.
On October 2, 2007, AMX again announced the acquisition of another UK-based company, ProCon Technology, a company that specializes in configurable control keypad systems, switchers and distribution amplifiers. [12] [13] In less than a year, AMX had acquired five companies, bringing its combined employee head count to over six hundred.
QSC is an American manufacturer of audio, video and control products such as amplifiers, loudspeakers, cameras, video endpoints, and digital signal processors including the Q-SYS networked audio, video and control platform. QSC and Q-SYS products are used by audio and video professionals for commercial applications, including corporate, higher ...
The amplifier output is fed to the splitter through coaxial trunk lines. [6] There are several methods of distribution that are often used in a SMATV headend. These include: IPTV (Internet Protocol) TV Systems [7] COM1000 Pro:Idiom Encrypted HD Headend; L-Band Satellite TV Distribution [8]
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