1) громкоговоритель
2) акустическая система
3) диктор
4) говорящий абонент ( в телефонии )
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- capacitive speaker
- capacitor speaker
- condenser speaker
- cone speaker
- crystal speaker
- double-cone speaker
- dynamic speaker
- electrostatic speaker
- Leslie speaker
- magnetic armature speaker
- magnetic speaker
- monitor speaker
- moving-coil speaker
- piezoelectric speaker