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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. Speaker types - Wikipedia

   en.wikipedia.org/wiki/Speaker_types

   A passive speaker (also referred to as a receptive bilingual or passive bilingual) has had enough exposure to a language in childhood to have a native-like comprehension of it but has little or no active command of it. Such speakers are especially common in language shift communities in which speakers of a declining language do not acquire ...

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. The best passive bookshelf speakers for most people - AOL

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

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6. 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.

7. 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 ...