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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. Subwoofer - Wikipedia

   en.wikipedia.org/wiki/Subwoofer

   Home-cinema systems typically use one subwoofer cabinet (the "1" in 5.1 surround sound). However, to "improve bass distribution in a room that has multiple seating locations, and prevent nulls with weakened bass response, some home-cinema enthusiasts use 5.2- or 7.2- or 9.2-channel surround sound systems with two subwoofer cabinets in the same ...

4. 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.

5. List of Bose computer speakers - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_computer_speakers

   The "Companion 5" system was first listed on Amazon in 2004. It was a 2.1 system consisting of two satellite speakers, a subwoofer, a wired control unit and an inbuilt sound card, which connected to the computer via USB. The subwoofer was very similar to that used in the Companion 3 Series II system, however the Companion 5 used larger ...

6. Audio power - Wikipedia

   en.wikipedia.org/wiki/Audio_power

   In some cases, an audio device may be measured by the total system power of all its loudspeakers by adding all their peak power ratings. Many home theater in a box systems are rated this way. Often low-end home theater systems' power ratings are taken at a high level of harmonic distortion as well; as high as 10%, which would be noticeable. [21]

7. BGW Systems - Wikipedia

   en.wikipedia.org/wiki/BGW_Systems

   BGW Systems, Inc. is a designer and manufacturer of audio power amplifiers based in Southern California in the United States. The company also manufactures other audio electronics designs as well as computer systems and sheet metal products.