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2. List of Bose portable audio products - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_portable...

   The first SoundLink product was released in 2009 [1] and used a USB wireless transmitter plugged into the computer to receive audio from the computer (using a proprietary protocol— not Bluetooth). [2] The system included a remote control. Reviewers criticized the high price of US$550. [3] [4]

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. QSC Audio Products - Wikipedia

   en.wikipedia.org/wiki/QSC_Audio_Products

   QSC is an American manufacturer of audio, video and control products such as amplifiers, loudspeakers, cameras, video endpoints, and digital signal processors including the Q-SYS networked audio, video and control platform. QSC and Q-SYS products are used by audio and video professionals for commercial applications, including corporate, higher ...

5. Wireless speaker - Wikipedia

   en.wikipedia.org/wiki/Wireless_speaker

   Wireless speakers are loudspeakers that receive audio signals using radio frequency (RF) waves rather than over audio cables. The two most popular RF frequencies that support audio transmission to wireless loudspeakers include a variation of WiFi IEEE 802.11 , while others depend on Bluetooth to transmit audio data to the receiving speaker.

6. List of Bose shelf stereos - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_shelf_stereos

   The "Wave Music System – SoundLink" was released in 2009, [9] which used a Bluetooth USB adaptor to stream audio from a computer to the Wave Music System and send basic commands (play/pause and skip) from the Wave's remote to iTunes and Windows Media Player software. [10]

7. Zenith Electronics - Wikipedia

   en.wikipedia.org/wiki/Zenith_Electronics

   Some models of Zenith's System 3 line of televisions made from the late 1970s to the early 1990s had a feature called the Space Phone by Zenith. It was basically a hands-free speakerphone built into the television set. It used the set's speaker and remote control, in addition to a built-in microphone.