Specifications System Type: Compact Bi-amplified 3-Way High Directivity Line Array Element Sensitivity: (2.83v/m) 97 dB LF, 101 dB MF/HF Components: 2 x 2168J 8 in. LF, 4 x 2104H 4 in. MF, 2 x 2407H HF NomInal Impedances: 8 ohm LF, 8 ohm MF/HF Horizontal Coverage (-6dB): 100 degrees nominal, 500Hz - 16kHz Power Rating: 1000W LF, 225W MF/HF Frequency Range (-10dB): 60 Hz - 22 kHz Dimensions (H x W x D): 279 mm x 787 mm - 417 mm (11 in. x 31 in. x 16.4 in.)
James Bullough Lansing was born James Martini, 14 January 1902, in Macoupin County, Millwood Township, Illinois. His parents were Henry Martini, born in St. Louis, Missouri, and Grace Erbs Martini, born in Central City, Illinois. The elder Martini was a coal mining engineer, and his work required that the family moved about quite a bit during Lansing's early years. Lansing was the ninth of fourteen children, one of whom died in infancy. For a short time, Lansing lived with the Bullough family in Litchfield, Illinois. He later took their name when he changed his from Martini to Lansing.
Not much is known about Lansing's early days, and we are indebted to Bill Martin, one of three surviving brothers, for providing most of the information presented here. Lansing graduated the eighth grade at the Lawrence School in Springfield, Illinois. He also attended the Springfield, Illinois, High School. Later, he took courses in a small business college in Springfield.
As a young lad he was very interested in all things electrical and mechanical. At about the age of 10, he built a Leyden Jar which he used to play pranks on his playmates. He also constructed crystal sets, and at one time, probably about the age of 12 or so, built a small radio transmitter from scratch. The signals from this set were apparently strong enough to reach the Great Lakes Naval Station in Illinois; naval personnel determined the source of these signals and later supervised the timely dismantling of the young Lansing's radio transmitter.
For a while Lansing worked as an automotive mechanic, specializing in fine engine repair work. He attended an automotive school for mechanics in Detroit through the courtesy of the dealer he worked for in Springfield.
Lansing's mother died 1 November 1924 at the age of 56, and at that time Lansing left home. As best we can determine, he went directly to Salt Lake City. Mrs. Lansing, the former Glenna Peterson of Salt Lake City, tells of meeting Lansing in 1925 in that city. At the time he was working for a radio station as an engineer. In addition, he worked for the Baldwin loudspeaker company in Salt Lake City for a time. He also met his future business partner, Ken Decker, in Salt Lake City.
- A connector allowing more than 2 electrical devices to be connected to a single power source. These connections are normally in parallel (each device is given the same voltage levels), but current is . Used . divided between them. Also known as a "Twofer".
3-way splitters are known as "Threefers".. Used . ...Headsets and Beltpacks
- Headsets are simply headphones with an attached mic, usually a noise canceling condenser mic, used for communicating with other crew members during a show or production. Beltpacks provide power to the. Used . headset and allow it to be used remotely. . Used . ...Volt
- A unit in the international system representing the electric potential and electromotive force equal to the difference of electric potential between two points on a conducting wire carrying a constant. Used . current of one ampere when the power dissipated between the points is one watt. Named after Alessandro Volta for his work with batteries, the term was adopted in the 1880s and is still in u. Used . se today....Audio
- Audio is the science and art of recording or reproducing sound through mechanical or electronic means. The field includes many disciplines, such as electrical engineering, acoustics, and music with de. Used . sign, installation and operation of sound recording and reproduction equipment as the focus. . Used . ...Automated Light
- Automated Lights were originally used in 1972, but the first computer-controlled stage lighting fixtures began to gain widespread acceptance in the concert industry in the early 1980's. As the digital. Used . age progressed, the cost of these fixtures was reduced and they slowly started being used in more 'traditional' theatrical environments. Intelligent fixtures are currently used in almost all. Used . major theatrical productions.
Usually relying on compact arc lamps as a light source, these fixtures generally use stepper motors connected to varying internal devices to manipulate the light bef...
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