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AHL Firsts © FIRST RECORDING (view) FIRST MANMADE AMPLIFICATION (view) FIRST DYNAMIC SPEAKER (view) FIRST USE OF A PUBLIC ADDRESS SYSTEM (view) FIRST MOVIE SOUNDSTAGE FIRST MICROPHONE USED BY A POPE (full view) (close up of mic) (close up of sign) FIRST 2-SIDED RECORD, (view) (Copyright 2010 by Allen Koenigsberg. Used with permission. ) |
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