loudspeaker installation

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• Sound reinforcement system — A sound reinforcement system is an arrangement of microphones, electronic signal processors, amplifiers, and loudspeakers that makes live or pre recorded sounds usually music or speech louder, or that distributes the sound to a larger or more… …   Wikipedia

• Meyer Sound Laboratories — Type Professional Audio Manufacturer Industry Professional Audio Founded 1979 Headquarters …   Wikipedia

• KEF — British loudspeaker manufacturer KEF was founded in 1961 by electrical engineer Raymond Cooke in a Nissen hut on the premises of a metal working operation called Kent Engineering Foundry (hence KEF), on the banks of the River Medway, near… …   Wikipedia

• Psychological Operations (United States) — Infobox Military Unit unit name=United States Psychological Operations caption= dates= country=United States allegiance=Federal branch= type= role= |size=|command structure=Active Army U.S. Army Special Operations Command (USASOC) Reserve Army… …   Wikipedia

• Constant voltage speaker system — Constant voltage speaker systems refer to networks of loudspeakers which are connected to an audio amplifier using step up and step down transformers to simplify impedance calculations and to minimize power loss over the speaker cables. They are… …   Wikipedia

• Car audio — Car audio/video (car AV), auto radio, mobile audio, 12 volt and other terms are used to describe the sound or video system fitted in an automobile. While 12 volt audio and video systems are also used, marketed, or manufactured for marine,… …   Wikipedia

• Nominal impedance — in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of: The nominal value of …   Wikipedia

• Loudspeakers in mosques — A mosque minaret in Hyderabad, Pakistan fitted with loudspeakers in all directions. Loudspeakers in mosques are generally used for Adhan or call to prayer ,[1] or sometimes for Khutbah or sermons. External loudspeakers are generally mounted on ta …   Wikipedia

• Audio crossover — A passive 2 way crossover designed to operate at loudspeaker voltages Audio crossovers are a class of electronic filter used in audio applications. Most individual loudspeaker drivers are incapable of covering the entire audio spectrum from low… …   Wikipedia

• Subwoofer — A subwoofer is a woofer, or a complete loudspeaker dedicated to the reproduction of bass audio frequencies, from perhaps 150 Hz down as far as 20 Hz, or in rare cases lower. Also known as subs , these are used to augment the low frequency… …   Wikipedia

• Transformer types — Circuit symbols Transformer with two windings and iron core. Step down or step up transformer. The symbol shows which winding has more turns, but not usually the …   Wikipedia