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In 1998, JL Audio launches the Evolution line of Evolution component speakers and coaxials. The WØ line is expanded to include 8-inch and 15-inch drivers. JL Audio moves its headquarters to a 92,000 square-foot facility in Miramar, FL. In 1999, W3 subwoofers are introduced. The Stealthbox, PowerWedge and Evolution lineups are further expanded ...
In 1978 Alan E. Hill of the Air Force Weapons Laboratory in Albuquerque, NM, designed the Plasmatronics Hill Type I, a commercial helium-plasma tweeter. [9] This avoided the ozone and nitrogen oxides produced by radio frequency decomposition of air in earlier generations of plasma tweeters. But the operation of such speakers requires a ...
Dome tweeter with a membrane with 25 mm diameter made from titanium; from a JBL TI 5000 loudspeaker box, c. 1997. A dome tweeter is constructed by attaching a voice coil to a dome (made of woven fabric, thin metal or other suitable material), which is attached to the magnet or the top plate via a low compliance suspension.
Lansing Iconic JBL TI 5000, a 3-way system with a 30 cm bass driver and a titanium membrane tweeter, built from about 1992 to 1999. With a height of 1.15 m (3 ft 9 in) and a weight of 55 kg (121 lb), it was the top model for the consumer market.
Drivers made for reproducing high audio frequencies are called tweeters, those for middle frequencies are called mid-range drivers (much less commonly called squawkers), and those for low frequencies are called woofers, while those for very low bass range are subwoofers. Less common types of drivers are supertweeters and rotary woofers.
Loudspeaker time-alignment, usually simply referred to as "time-alignment" or "Time-Align", is a term applied in loudspeaker systems which use multiple drivers (like woofer, mid-range and tweeter) to cover a wide audio range. It involves delaying the sound emanating from one or more drivers (greater than 2-way) to correct the transient response ...
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