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2. 10 Waterproof Bluetooth Speakers for Showers, Pool Parties ...

   www.aol.com/17-waterproof-speakers-thatll-sound...

   This waterproof speaker offers big, 360-degree sound for a perfectly portable size, along with superior mics for making calls, Alexa (or other smart assistant) support, and 18 hours of battery ...

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. JBL - Wikipedia

   en.wikipedia.org/wiki/JBL

   Website. jbl .com. JBL is an American audio equipment manufacturer [1] headquartered in Los Angeles, California, United States. JBL serves the home and professional market. The professional market includes studios, installed/tour/portable sound, music production, DJ, and cinema markets. The home market includes high-end home amplification ...

5. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   Loudspeaker. The hole below the lowest woofer is a port for a bass reflex system. A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer [1] : 597 that converts an electrical audio signal into a corresponding sound. [2] A speaker system, also often simply referred to as a speaker or loudspeaker ...

6. Lectern - Wikipedia

   en.wikipedia.org/wiki/Lectern

   Lectern. A lectern is a standing reading desk with a slanted top, on which documents or books are placed as support for reading aloud, as in a scripture reading, lecture, or sermon. A lectern is usually attached to a stand or affixed to some other form of support. To facilitate eye contact and improve posture when facing an audience, lecterns ...

7. Intercom - Wikipedia

   en.wikipedia.org/wiki/Intercom

   An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building, small collection of buildings or portably within a small coverage area, which functions independently of the public telephone network. [1] Intercoms are generally mounted permanently in ...