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Installation Line Array (ILA)

FOH Staff • News • November 13, 2007

Line array systems have become the primary loudspeaker configuration for tour sound and many large installations. With the advent of the WideLine WL2082-i Installation Line Array (ILA), QSC offers a professional system accessible to a broader range of house of worship and performance venues.

Each Installation Line Array element uses a pair of high-power, neodymium magnet, 8" diameter low frequency drivers in a two-and-a-half way configuration. Both woofers produce low frequencies, but only one covers the midrange, which is designed to provide uniform directivity in the crossover region.

For high frequencies, a pair of 1.75" (voice-coil diameter) neodymium compression drivers with titanium domes are mounted on a patented* multiple aperture diffraction waveguide and are designed to provide wide coverage (140°).

The system may be used in bi-amplified or tri-amplified mode. The low frequency range of a WL2082-i array will be adequate for speech, voice and many acoustic music uses. For reinforcement of program material with more demanding low frequency content a companion subwoofer, the WL115-sw, is also available. The WL115-sw is a 15" subwoofer using a 4th order, bandpass enclosure. Tooled ports with gently rounded terminations inside and out eliminate port turbulence distortion. Mesh grilles are integrated into the port design to obstruct the entrance of foreign objects into the enclosure.

The WL115-sw includes rigging hardware and, with selection of the appropriate rigging accessories, subwoofers may be flown at the top of an array or behind as pictured. Rigging for the ILA is designed to be simple, flexible and safe providing a 10:1 design factor with twelve WL2082-i systems in the array (see the owner's manual for details before planning any array suspension).

The array is assembled with the included bolts and the relative angle between adjacent boxes is adjustable in 1º increments for precise tailoring of vertical coverage. For portable applications an optional kit of four quick release pins is available.

Available in black or white, the WL2082-i enclosure is made of high impact polystyrene with extensive internal ribs to eliminate acoustic losses due to sidewall flex. The Installation Line Array may be used in outdoor applications where the system is not directly exposed to the elements. The enclosure material is formulated with UV inhibitors, the grille is made of aluminum and the woofer cones are weather resistant.


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