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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. 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 .

4. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   Hence the drivers receive power only in the sound frequency range they were designed for, thereby reducing distortion in the drivers and interference between them. Crossovers can be passive or active. A passive crossover is an electronic circuit that uses a combination of one or more resistors, inductors and capacitors. These components are ...

5. Audio power - Wikipedia

   en.wikipedia.org/wiki/Audio_power

   Active speakers comprise two or three speakers per channel, each fitted with its own amplifier, and preceded by an electronic crossover filter to separate the low-level audio signal into the frequency bands to be handled by each speaker. This approach enables complex active filters to be used on the low level signal, without the need to use ...

6. The best passive bookshelf speakers for most people - AOL

   www.aol.com/news/the-best-passive-bookshelf...

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7. wOOx Technology - Wikipedia

   en.wikipedia.org/wiki/WOOx_Technology

   wOOx Technology (rendered wOOx) is a brand created by Philips to identify loudspeaker systems that employ passive radiator technology along with active equalisation to maximize the output of the passive diaphragm. wOOx Technology optimizes the active bass driver, the passive bass radiator, and the active equalisation curve to obtain maximum low-frequency reproduction in a relatively compact ...