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Altec 604 Duplex Loudspeaker Original Altec 604 Sales Literature, Page 1 Cutaway View Of Altec 604 Duplex Loudspeaker Comparison of the different horns used in the Altec 604 and 604B and the one used in the 604C-G Altec 605A Advertisement, 1959 Altec 604E SuperDuplex Specification Sheet, Page 1 Altec Lansing 604-8K Duplex Loudspeaker Current version of the Altec 604
Altec Lansing, Inc. is an ... the Altec Lansing Duplex 600 ... of a multi-cellular horn. [20] On 1 October 2009 Altec Lansing LLC announced that ...
Hilliard remained VP of Engineering at Altec until 1960 during which time he supervised the development of sectoral horns, significant reductions in the size of the condenser microphone, many amplifier and crossover designs, and a major reworking and improvement of the Altec Lansing Duplex 604, [1] the well-known high-fidelity coaxial ...
A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form (right) consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air.
The first high-quality loudspeaker developed expressly as a studio monitor was the Altec Lansing Duplex 604 in 1944. This innovative driver has historically been regarded as growing out of the work of James Bullough Lansing who had previously supplied the drivers for the Shearer Horn in 1936, a speaker that had rapidly become the industry ...
Altec Lansing introduced the 604, which became their most famous coaxial Duplex driver, in 1943. It incorporated a high-frequency horn that sent sound through a hole in the pole piece of a 15-inch woofer for near-point-source performance. [ 13 ]
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]
James Bullough Lansing (born James Martini, January 2, 1902 – September 29, 1949) was a pioneering American audio engineer and loudspeaker designer who was most notable for establishing two audio companies that bear his name, Altec Lansing and JBL, the latter taken from his initials, JBL.