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DUPLEX was the trade name given by Altec Lansing to its line of coaxial loudspeakers, beginning with the first model 601 in 1943. However, the name was most commonly associated with the subsequent model 604 which was a seminal loudspeaker that became a milestone in loudspeaker development.
The first Altec Lansing power amplifier, Model 142B, was produced that same year. James Bullough Lansing worked for Altec Lansing, then in 1946 he left to found the James B. Lansing Company , another manufacturer of high-quality professional loudspeakers, which competed with Altec Lansing. [12]
Bottom: bi-wiring. Loudspeaker bi-wired using banana plugs. Bi-wiring is a means of connecting a loudspeaker to an audio amplifier, primarily used in hi-fi systems. Normally, there is one pair of connectors on a loudspeaker and a single cable (two conductors) runs from the amplifier output to the terminals at the loudspeaker housing.
Altec Lansing: United States Amphion Loudspeakers: Finland Anker: China Armstrong Audio: United Kingdom Audiovox: United States Audison: Italy Auro-3D: Belgium Bang & Olufsen: Denmark Barefoot Sound: United States BassBoss: United States Behringer: Germany Blaupunkt: Germany Bosch: Germany Bose: United States Boston Acoustics: United States ...
Later early passive versions simply integrated left, centre and right speakers into one enclosure, sometimes called an "LCR soundbar". Altec Lansing introduced a multichannel soundbar in 1998 called the "Voice of the Digital Theatre" or the ADA106. It was a powered speaker system that offered stereo, Dolby Pro-Logic and AC3 surround sound from ...
1946 – Lansing leaves Altec and founded a new company, James B. Lansing Sound Inc. 1947 – JBL has a 15" speaker (38 cm), model D-130, using for the first time a 4" (100 mm) voice coil in a speaker cone; 1949 – James. B. Lansing dies of suicide; William Thomas became president of the company
Speaker wire is a passive electrical component described by its electrical impedance, Z.The impedance can be broken up into three properties which determine its performance: the real part of the impedance, or the resistance, and the imaginary component of the impedance: capacitance or inductance.
A coaxial loudspeaker is a loudspeaker system in which the individual driver units radiate sound from the same point or axis. Two general types exist: one is a compact design using two or three speaker drivers, usually in car audio, and the other is a two-way high-power design for professional audio, also known as single-source or dual-concentric loudspeakers. [1]