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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. Audio power - Wikipedia

   en.wikipedia.org/wiki/Audio_power

   Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts.The electrical power delivered to the loudspeaker, together with its efficiency, determines the sound power generated (with the rest of the electrical power being converted to heat).

4. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer [1]: 597 that converts an electrical audio signal into a corresponding sound. [2]

5. Stage monitor system - Wikipedia

   en.wikipedia.org/wiki/Stage_monitor_system

   There are two types of monitors: passive monitors consist of a loudspeaker and horn in a cabinet and must be plugged into an external power amplifier; active monitors have a loudspeaker, horn and a power amplifier in a single cabinet, which means the signal from the mixing console can be plugged straight into the monitor speaker.

6. Audio crossover - Wikipedia

   en.wikipedia.org/wiki/Audio_crossover

   A passive 2-way crossover designed to operate at loudspeaker voltages.. Audio crossovers are a type of electronic filter circuitry that splits an audio signal into two or more frequency ranges, so that the signals can be sent to loudspeaker drivers that are designed to operate within different frequency ranges.

7. 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 .

8. AOL Mail

   mail.aol.com/?icid=aol.com-nav

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Glossary of music terminology - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_music_terminology

   The smallest pitch difference between notes (in most Western music) (e.g. F–F ♯) (Note: some contemporary music, non-Western music, and blues and jazz uses microtonal divisions smaller than a semitone) semplice Simple sempre Always sentimento Feeling, emotion sentito lit. "felt", with expression senza Without senza misura Without measure ...