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ADb 2KW Fresnels

DDA Fresnels

Preset Boards - Preset boards are the most basic lighting consoles - and also the most prevalent in smaller installations. They consist of two identical fader banks, called 'scenes.' The faders (control slides) on th. Used . ese scenes can be manually adjusted. Each scene has the same number of channels which control the same dimmers, but only one is live at a time, so the console operator can build a scene, then. Used . fade to it. These scenes are often referred to as A-scenes and B-scenes, and a cross-fader is used to fade between the A and B scene.

Generally, a preset board operator has a cue sheet for each s...

Touring Systems - A touring system is generally a rack unit designed for easy of mobility, set up and repair to be taken on tour and can include lighting, audio and staging equipment. . Used . . Used . ...

Mount Speakers - A speaker designed to be mounted on or in a wall or on a stand.. Used . . Used . ...

Kelvin - The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvins is absolute zero (when molecular motion stops), and one kelvin is . Used . the fraction 1/273.16 of the thermodynamic temperature of the triple point of water. The Celsius temperature scale is now defined in terms of the kelvin, with 0 °C corresponding to 273.15 kel. Used . vins, approximately the freezing point of water under ordinary conditions.

The kelvin is named after the British physicist and engineer William Thomson, 1st Baron Kelvin; his barony was in turn na...

Moving Mirror Lights - A common term for a moving mirror stage/concert light. This light in particular is common is clubs, discos and lounges. As opposed to the moving head lights that are more common for theatre, concerts. Used . and stage events. . Used .

Fresnels

Fresnel lights are a specialized type of lighting that is used at concert venues and theatres in order to “wash” a specific area of the stage with light. Fresnel lights have a special lens which is able to produce a wider beam with a softer edge, ideal for top lighting and back lighting. Fresnel lights are mostly used for top and back lighting in theatre and concerts, and are placed at a short-to-medium distance from the actual stage. They can also be used for front lighting in smaller venues, as their soft beam is quite distinctive and cannot be replicated easily with other lights, although they suffer the disadvantage of a lack of control compared to ellipsoidal lights. The biggest difference between Fresnel lights and ordinary lights is that they feature quite a distinctive shaped lens, which rather than being smooth like most lenses, is ‘stepped’, giving it a much greater range of curvature. These ‘steps’ allow for the light beam to be more focused, while the light beam is also broken up as it passes through the lens, spreading the intensity fully across the light beam, hence a softer light is produced. Generally, Fresnel lights have a lens diameter of 3, 6 or 8 inches in theatrical use, while the wattage of the lamp can range from anything between 150 Watts to 200 Watts. For film lighting, Fresnel lights are often far more powerful, ranging in size from a 2 inch lens up to 24 inch lenses, while the wattage of the lamp can be as powerful as 20,000 Watts.