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2. List of Bose home audio products - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_home_audio...

   New mounting brackets allow the newly designed speakers to mount nearly flush to the wall. [37] In the past, Bose has manufactured a 6.1-channel Acoustimass system, the Acoustimass 16, which featured five "double cube" satellite speakers, a single center-channel speaker, and an Acoustimass bass module. [38]

3. Passive radiator (speaker) - Wikipedia

   en.wikipedia.org/wiki/Passive_radiator_(speaker)

   A speaker enclosure using a passive radiator usually contains an "active loudspeaker " (or main driver), and a passive radiator (also known as a "drone cone"). The active loudspeaker is a normal driver, and the passive radiator is of similar construction, but without a voice coil and magnet assembly. It is not attached to a voice coil or wired ...

4. Wall of Sound (Grateful Dead) - Wikipedia

   en.wikipedia.org/wiki/Wall_of_Sound_(Grateful_Dead)

   The Wall of Sound was an enormous sound reinforcement system designed in 1973 specifically for the Grateful Dead 's live performances. The largest concert sound system built at that time, [1] [2] the Wall of Sound fulfilled lead designer Owsley "Bear" Stanley's desire for a distortion -free sound system that could also serve as its own ...

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. 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.

7. Phone connector (audio) - Wikipedia

   en.wikipedia.org/wiki/Phone_connector_(audio)

   Digital audio is now common and may be transmitted via USB sound cards, USB headphones, Bluetooth, display connectors with integrated sound (e.g. DisplayPort and HDMI). Digital devices may also have internal speakers and mics. Thus the phone connector is sometimes considered redundant and a waste of space, particularly on thinner mobile devices.