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  2. List of speakers of the Pennsylvania House of Representatives

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

    The house cannot hold an official session in the absence of the speaker or their designated speaker pro tempore. Speaker K. Leroy Irvis was the first African-American elected speaker of any state legislature in the United States since the Reconstruction era. Current Speaker Joanna McClinton is the first female and first female African-American ...

  3. 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.

  4. Pennsylvania House of Representatives - Wikipedia

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

    Pennsylvania House of Representatives. 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.

  5. Line array - Wikipedia

    en.wikipedia.org/wiki/Line_array

    L-Acoustics V-DOSC/dV-DOSC line array at a concert. NEXO STM M28 Line array at EXPO Festival. A line array is a loudspeaker system that is made up of a number of usually identical loudspeaker elements mounted in a line and fed in phase, to create a near- line source of sound. The distance between adjacent drivers is close enough that they ...

  6. Joanna McClinton - Wikipedia

    en.wikipedia.org/wiki/Joanna_McClinton

    Joanna E. McClinton (born August 19, 1982) is an American politician from Pennsylvania currently serving as the 143rd Speaker of the Pennsylvania House of Representatives since February 28, 2023. A member of the Democratic Party, she is the first woman to serve as Speaker. She previously served as Majority Leader from December 1, 2022 to ...

  7. Dipole speaker - Wikipedia

    en.wikipedia.org/wiki/Dipole_speaker

    A dipole speaker enclosure in its simplest form is constructed by mounting a loudspeaker driver on a flat panel. The panel may be folded to conserve space. The term dipole derives from the fact that the polar response consists of two lobes, with equal radiation forwards and backwards, and none perpendicular to the axis.

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