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2. Public address system - Wikipedia

   en.wikipedia.org/wiki/Public_address_system

   A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.

3. List of speakers of the Pennsylvania House of Representatives

   en.wikipedia.org/wiki/List_of_Speakers_of_the...

   Wisdom, Vision and Diplomacy: Speakers of the Pennsylvania House (A Biographical History of the Speakers of the Provincial Assembly and the House of Representatives, 1682-1998). Harrisburg, PA: Pennsylvania House of Representatives. ISBN 978-0-9667794-0-0. OCLC 40553654. "Speakers of the Provincial Assembly (1682-1790) (page 14/28)" (PDF).

4. Sound reinforcement system - Wikipedia

   en.wikipedia.org/wiki/Sound_reinforcement_system

   A sound reinforcement system is the combination of microphones, signal processors, amplifiers, and loudspeakers in enclosures all controlled by a mixing console that makes live or pre-recorded sounds louder and may also distribute those sounds to a larger or more distant audience. [1][2] In many situations, a sound reinforcement system is also ...

5. Pennsylvania House of Representatives - Wikipedia

   en.wikipedia.org/wiki/Pennsylvania_House_of...

   The Pennsylvania House of Representatives is the lower house of the bicameral Pennsylvania General Assembly, the legislature of the U.S. state of Pennsylvania. There are 203 members, elected for two-year terms from single member districts. [ 1 ][ 2 ] It is the largest full-time state legislature in the country.

6. Speaker stands - Wikipedia

   en.wikipedia.org/wiki/Speaker_stands

   Speaker stands. Speaker stands are stands on which loudspeakers are placed with the aim of improving the quality of sound from the speaker. In the 1970s [1] musicians and high fidelity enthusiasts found that lifting speakers off the ground and mounting them on something with no vibration increased sound quality. Ordinary domestic furniture was ...

7. Tannoy - Wikipedia

   en.wikipedia.org/wiki/Tannoy

   The company was founded by the Yorkshire-born engineer Guy Fountain (1898-1977) at a garage in Tulsemere Road, Dulwich in London as the Tulsemere Manufacturing Company. It originally made battery chargers for wireless radio sets. [2] The company name was changed to Tannoy in 1928 and a small factory was opened in Dalton Road, West Norwood ...