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The voltage is constant only in the sense that at full power, the voltage in the system does not depend on the number of speakers driven (as long the amplifier's maximum power is not exceeded). [2] Constant-voltage speaker systems are also commonly referred to as 25-, 70-, 70.7-, 100 or 210-volt speaker systems; distributed speaker systems; or ...
1958 – Introduction of JBL Paragon stereo speaker system; 1962 – JBL creates the first 2-way studio monitor, using a high-frequency motor lens; 1967 - JBL creates the iconic red box logo with the exclamation (!) and white lettering. Designed by Arnold Wolfe, the president of JBL [11] 1968 – JBL launches the 3-way speaker 4310
JBL: United States Jensen: United States JL Audio: United States JVC: Japan K-array: Italy KEF: United Kingdom (brand) Kenwood: Japan Kharma International: Netherlands KLH: United States Klipsch: United States Krell Industries: United States KRK: United States Kustom: United States L-Acoustics: France Legacy Audio: United States Linn: United ...
Some of the first powered loudspeakers were JBL monitor speakers. With the addition of the SE401 Stereo Energizer, introduced in 1964, any pair of monitor speakers could be converted to self-powered operation with the second speaker powered by the first. [8] The first studio monitor with an active crossover was the OY invented 1967 by Klein-Hummel.
The receiver is positioned where the listener wants the sound to be, providing the freedom to move the wireless speakers around without the need of using cables. The receiver/speaker unit generally contains an amplifier to boost the audio signal to the loudspeaker; it is powered either by batteries or by an AC electric outlet. [2]
Loudspeaker enclosures range in size from small "bookshelf" speaker cabinets with 4-inch (10 cm) woofers and small tweeters designed for listening to music with a hi-fi system in a private home to huge, heavy subwoofer enclosures with multiple 18-inch (46 cm) or even 21-inch (53 cm) speakers in huge enclosures which are designed for use in ...