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A line of studio monitor speakers was created in 1991. [15] In 1996, Yorkville introduced the "TX" line of concert touring loudspeakers. [ 14 ] In 2001, Yorkville contracted with designer Tom Danley to create the "Unity" line of loudspeakers which was introduced in 2003.
Some of these early 3-way models featured 10" and 12" woofers manufactured by Jensen ("Flex-Air") and CTS (Chicago Telephone Supply), 5" whizzer cone squawkers manufactured by Philips Electronics of the Netherlands, and 2" and 2.5" cone tweeters by Peerless of Denmark. [22] The Rectilinear speakers were typically, but not always, of ported ...
The initial 1984 Dimensia system came with one of several three-way stereo loudspeaker systems. The first one was the SPK375 which were made to go on optional speaker stands. They were rated at 60 watts RMS and 120 watts maximum and were in a 36-pound acoustic suspension enclosure .
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; 1954 – The 375 compression engine is the first 4-inch engine sold; its response extends to 9 kHz
Acoustic Research was a Cambridge, Massachusetts-based company that manufactured high-end audio equipment. The brand is now owned by VOXX.Acoustic Research was known for the AR-3 series of speaker systems, which used the 12 in (300 mm) acoustic suspension woofer of the AR-1 with newly designed dome mid-range speaker and high-frequency drivers.
In 1975 Ed Long [1] in cooperation with Ronald J. Wickersham invented the first technique to Time-Align a loudspeaker systems. In 1976 Long presented "A Time-Align Technique for Loudspeakers System Design" [2] at the 54th AES convention demonstrating the use of the Time-Align generator to design improved crossover networks for multi-way loudspeakers systems.
Bricklayers have a tough job. It requires skill and experience. It is hard on the back and knees. Hands too. You have to be outside in all kinds of weather.
The 1970s to early 1980s was a period of innovation in loudspeaker design with many sound reinforcement companies designing their own speakers using commercially available drivers. The areas of innovation were in cabinet design, durability, ease of packing and transport, and ease of setup.