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2. Constant-voltage speaker system - Wikipedia

   en.wikipedia.org/.../Constant-voltage_speaker_system

   Constant-voltage speaker systems are also commonly referred to as 25-, 70-, 70.7-, 100 or 210-volt speaker systems; distributed speaker systems; or high-impedance speaker systems. In Canada and the US, they are most commonly referred to as 70-volt speakers. In Europe, the 100 V system is the most widespread, with amplifier and speaker products ...

3. 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 ...

4. Home audio - Wikipedia

   en.wikipedia.org/wiki/Home_audio

   Modern home cinema systems typically augment the audio output from a DVD player or Blu-ray player with a multi-channel power amplifier and anywhere from two speakers and a stereo power amp (for stereo sound) to a 5.1 channel amplifier and five or more surround sound speaker cabinets (with a surround sound system).

5. Audio power amplifier - Wikipedia

   en.wikipedia.org/wiki/Audio_power_amplifier

   Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus 1 Hi Fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.

6. Bob Carver - Wikipedia

   en.wikipedia.org/wiki/Bob_Carver

   The amplifier can supply humongous current, massive output power, tremendous voltage, runs cool, and is efficient. 6) Only 12 output transistors are needed per channel for a peak-to-peak current of 240 amps. 7) Bias current and idling current issues become irrelevant and nonproblematic.

7. Naim Audio amplification - Wikipedia

   en.wikipedia.org/wiki/Naim_Audio_amplification

   A Naim Audio system rack. Naim Audio is a specialist British manufacturer of high-end audio amplifiers well known for their self described qualities of "pace, rhythm and timing". [1] [2] The company has a sui generis approach to audio design, ignoring specifications and power ratings as indicators of the quality of an amplifier.