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  2. Public address system - Wikipedia

    en.wikipedia.org/wiki/Public_address_system

    For popular music concerts, a more powerful and more complicated PA System is used to provide live sound reproduction. In a concert setting, there are typically two complete PA systems: the "main" system and the "monitor" system. Each system consists of a mixing board, sound processing equipment, amplifiers, and speakers.

  3. Tannoy - Wikipedia

    en.wikipedia.org/wiki/Tannoy

    Actor Cyril Ritchard and three young women listen to the Tannoy public address system in 1948. Professional studio monitor Little Gold Monitor (c. 1990) with two-way-coaxial construction, meaning the tweeter for frequencies from 1.400 Hz and above is located independently in the center of the 30 cm bass driver.

  4. Performance appraisal - Wikipedia

    en.wikipedia.org/wiki/Performance_appraisal

    Performance appraisal. A performance appraisal, also referred to as a performance review, performance evaluation, [1] (career) development discussion, [2] or employee appraisal, sometimes shortened to "PA", [a] is a periodic and systematic process whereby the job performance of an employee is documented and evaluated.

  5. In a time before PA systems, rodeos used a guy with a loud ...

    www.aol.com/time-pa-systems-rodeos-used...

    The loudspeaker system was invented. That meant that producers didn’t have to pay for the rare person with both announcing skills and a loud voice. Now all they needed was a person who could ...

  6. Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania

    Pennsylvania ( / ˌpɛnsɪlˈveɪniə / ⓘ, lit. 'Penn's forest country' ), officially the Commonwealth of Pennsylvania [b] ( Pennsylvania Dutch: Pennsylvanie ), [7] is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.

  7. Piper PA-24 Comanche - Wikipedia

    en.wikipedia.org/wiki/Piper_PA-24_Comanche

    The Piper PA-24 Comanche is an American single-engine, low-wing, all-metal monoplane of semimonocoque construction with tricycle retractable landing gear and four or six seats. [2] The Comanche was designed and built by Piper Aircraft and first flew on May 24, 1956. Together with the PA-30 and PA-39 Twin Comanches, it made up the core of Piper ...

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