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2. Powered speakers - Wikipedia

   en.wikipedia.org/wiki/Powered_speakers

   An active full-range loudspeaker. Powered speakers, also known as self-powered speakers and active speakers, are loudspeakers that have built-in amplifiers.Powered speakers are used in a range of settings, including in sound reinforcement systems (used at live music concerts), both for the main speakers facing the audience and the monitor speakers facing the performers; by DJs performing at ...

3. Soundbar - Wikipedia

   en.wikipedia.org/wiki/Soundbar

   It was a powered speaker system that offered stereo, Dolby Pro-Logic and AC3 surround sound from the soundbar and a separate subwoofer. The soundbar contained four 3-inch full range drivers and two 1-inch tweeters while the subwoofer housed one 8-inch dual voice coil driver.

4. List of Bose portable audio products - Wikipedia

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

   The portable audio products sold by Bose Corporation have been marketed as portable smart speaker and SoundLink. These wireless speaker systems are battery powered and play audio over a wireless connection from a separate source device (such as a computer or smartphone). Most Soundlink models use Bluetooth to communicate with the source device.

5. Subwoofer - Wikipedia

   en.wikipedia.org/wiki/Subwoofer

   From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...

6. Home theater in a box - Wikipedia

   en.wikipedia.org/wiki/Home_theater_in_a_box

   A home theater in a box (HTIB) is an integrated home theater package which "bundles" together a combination DVD or Blu-ray player, a multi-channel amplifier (which includes a surround sound decoder, a radio tuner, and other features), speaker wires, connection cables, a remote control, a set of five or more surround sound speakers (or more ...

7. Home cinema - Wikipedia

   en.wikipedia.org/wiki/Home_cinema

   The most basic and economical system could be a DVD player, a standard-definition (SD) large-screen television with at least a 27-inch (69 cm) diagonal screen size, and an inexpensive home theater in a box surround sound amplifier and speaker system with a subwoofer. A more expensive home cinema set-up might include a Blu-ray disc player, home ...