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2386 Cabinet Speakers

... to drive the Horn) allows very compact single and Multiple Horn/Driver systems to be put together. Should vertical pattern control be required below 2.5 kHz, two or more horns may be stacked vertically to restore full Bi-Radial performance.

The exceptionally consistent horizontal dispersion eliminates the Midrange narrowing and high Frequency beaming problems typically associated with conventional Horn designs. Additionally, the highly predictable performance of the 2386 greatly simplifies cluster design. The need for Horn overlapping is Minimized and lobing and comb Filter effects are virtually eliminated.

Computer-aided design techniques were used to derive the Horn contours in the horizontal and vertical planes. Utilizing sidewall contours based on a polynomial power series formula, the Horn design yields smooth response, low distortion, and even coverage. This design avoids the performance disadvantages of horns that feature sharp FLARE transitions and flat sidewalls. The Bi-RadialTM compound FLARE configuration provides constant coverage over defined, solid angles. To ensure lightweight, superior strength, and freedom from resonances, the Horn bell is contructed of injection-molded, reinforced, solid polyurethane.

JBL Cabinet Speakers

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.

Cameras - A video camera is a camera that takes continuous pictures and generates a signal for display or recording. It captures images by breaking them down into a series of electromagnetic lines.. Used . . Used . ...

Entire Stages - An entire stage is a complete stage that generally include platforms, stairs and sometimes roofing, ranging in size from small easy to transport stages to large staging systems.. Used . . Used . ...

Concert Lighting - Modern stage lighting is a flexible tool in the production of theatre, dance, opera and other performance arts. Several different types of lighting instruments are used in the pursuit of the various p. Used . rinciples or goals of lighting. . Used . ...

XLR - A type of rugged multipin metallic connector for sound and lighting equipment generally having 3 pins for audio applications and 5 pins for DMX lighting. XLR plugs are very effective at reducing data. Used . and noise errors because a comparison is made between the signals carried by two of data cables, canceling out any differences. This relationship has given rise to the misnomer that XLR sta. Used . nds for eXternal Live Return. However, these connectors, sometimes called Cannons after the original manufacturer were originally called the Cannon X series, later versions added a Latch making the Cannon XL ...

Compression and Dynamics - Compression is the reduction of the dynamic range of a sound to avoid unintentional changes and increases in the amplitude. Compression is generally used to make an audio signal sound louder without i. Used . ncreasing its peak amplitude. By compressing or limiting the peak signals, it becomes possible to increase the overall volume of the signal without exceeding the dynamic limits of a device or. Used . medium. This causes quiet sounds to become louder, while louder sounds remain unchanged....

Cabinet Speakers

Speaker cabinets are specially engineered units in which audio equipment such as speakers and their associated hardware are mounted into. These cabinets can be very basic affairs, little more than a wooden case with no additional features other than one port for inputting a sound cable, or they can be incredibly complex cabinets with features ranging from numerous ports and internal baffles to acoustic insulation and composite materials used in their construction. The main point of housing loud speakers and PA speakers in cabinets is not simply to make them look neat and tidy, although that is one benefit. The cabinet actually provides a useful function in preventing competing sound waves from interacting with each other and distorting the end product. This is because the diaphragm that the speaker driver uses to create the sound we hear generates sound waves both at the front and the rear, and these will be out of sync with each other, thus creating a distortion if not dealt with adequately. Other side effects include echo and reverberation, as the sound waves would reach the audience at slightly different times as they travel on different paths through the loud speakers towards them. In addition to minimizing these unwanted side effects, loud speaker’s cabinets also help to manage the vibrations which are caused by the driver frame, as well as the buildup of heat that is associated with amplifiers, driver voice coils and other moving components in PA speakers.