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WideLine-10 Line Array Speakers

.... Both 10" diameter low-frequency transducers are used to cover the lowest frequency range. One driver covers only low frequencies while the range of the other extends through the mid frequencies to the mid/high crossover point. The use of a single midrange transducer allows the horizontal coverage pattern to remain as wide as possible and assures smooth response both on and off axis at the transition to the diffraction slot loaded high frequency section. Biamplification uses passive elements to affect the required frequency response shading of the low-frequency drivers and offers reduced amplifier channel counts and simplified wiring. Triamplification allows the required low-frequency shading to be controlled with greater precision via active electronics and is recommended where maximum output and highest sound quality are required.

The WideLine's 16 ohm per transducer lowfrequency impedance optimizes allocation of amplifier channels. In biamp mode the LF/MF sections of up to four enclosures can be powered by one amplifier channel operating into a two ohm load. In triamp mode the LF and MF sections of up to eight enclosures can be powered by a single two channel amplifier.

The high-frequency section consists of a 1.4" exit, 3" 16 ohm, neodymium Compression Driver, mounted on a proprietary multiple aperture diffraction slot waveguide. This patented device produces the ideal linear source needed for good line array performance, and facilitates the enclosure's exceptionally wide horizontal coverage.

The WL2102 features lightweight, highly weather resistant cored composite construction resulting in a net weight of just 70 lbs per enclosure; less than half the weight of some conventional designs.

The enclosure of the WL2102-w (pictured) is constructed of industry standard birch plywood resulting in a slight increase in weight; 83 lbs/37.7 kg vs. 70 lbs/31.8 kg for the WL2102, at a substantial cost savings for more price sensitive applications where the ultra light weight and extreme weather resistance of the cored composite enclosure are not required. The mechanical design allows composite and plywood enclosures to be arrayed together.

Wideline features a unique 3-point suspension system allowing construction of arrays of up to 24 enclosures (5:1 design factor). A 12 enclosure hang will maintain a 10:1 design factor which may be dictated by local regulations and practices. Vertical splay angles between adjacent enclosures are adjustable in one degree increments from zero to ten degrees. All hardware required to construct an array is permanently attached to the enclosure; there are no loose parts to misplace.

Two array frame models offer the user the flexibility to choose the right tool for the job. The AF2102, the larger of the two, can accommodate array sizes up 12 enclosures while maintaining a design factor of 10:1. The smaller AF2102-s does triple-duty; accommodating suspended arrays of up to six enclosures with a 10:1 design factor, acting as a base for ground-stacked arrays of up to six enclosures and as an attachment allowing WideLines to be stacked atop QSC 215PCM and 215SB Subwoofers.



IMPORTANT NOTE:

Signal Processing Requirements

Like most line-array systems available today, QSC WideLine and ILA line-arrays require carefully optimized signal processing in order to perform as intended. QSC has developed processing settings for these loudspeaker systems using our SC28, BASIS and Q-Sys digital processing devices. Arriving at these settings requires skilled engineers, sophisticated measurement equipment and repeated listening in various environments.

It is not possible to simply take the parameters from a QSC processor, transfer them to another processor and get the same results. Other processor manufacturers use different algorithms and design techniques that will produce a different transfer function even if the settings are substantially the same. As a result, QSC is unable to provide settings or tuning support for our line array systems when used with any processors other than those specified by QSC.

QSC Line Array Speakers

After more than three decades in the business, QSC Audio Products, Inc., has become a globally recognized leader in audio manufacturing. This prominence is the result of the company's mission to establish new standards of reliability and performance through the development of breakthrough technologies. QSC changed the face of amplifier technology with the introduction of QSC's exclusive PowerWave switching power supply, a technological advance that makes heavy, bulky and inefficient amplifiers a thing of the past. PowerWave, first incorporated into the revolutionary PowerLight Series and now used in three other amplifier lines, is proof that high power can be achieved in small, lightweight packages. While QSC continues to set the standard for amplifier technology, the company has also made significant strides in computer control, digital signal processing and signal transport. QSControl (pronounced Q's Control), a remote audio monitoring system application, has proven its performance in systems worldwide, from the world's tallest buildings (the Petronas Towers in Malaysia) to Mandalay Bay Hotel and Casino in Las Vegas. QSC recently entered the professional loudspeaker business. Several of the company's enclosures incorporate Composilite™, a patented core composite technology that yields superior acoustic properties, lighter weight, and outstanding weather resistance compared to conventional enclosure materials. The introduction of RAVE (Routing Audio Via Ethernet), which gives users a simpler way of transporting up to 64 channels of digital audio using Peak Audio's CobraNet technology, provides more evidence of QSC's commitment to creating system solutions based on open standards and protocols. "When this company was started, there was a common commitment to creating with integrity," said QSC CEO Barry Andrews. "That commitment has strengthened over the years. QSC products have a reputation for quality, innovation and reliability. Moving into the fully integrated systems allows us to expand that commitment into an area we feel is the future of system design." The exceptionally high value of QSC products is achieved through developing leading technologies, world-class manufacturing techniques, and the purchasing power possible as the world's leading amplifier producer. To meet growing customer demand, QSC has expanded its manufacturing capability with a new 81,000-sq.-ft., state-of-the-art production facility. The new factory, which has the ability to triple QSC's production capacity, is located next to QSC's current 51,000-sq.-ft. headquarters in Costa Mesa, Calif. Manufacturing, warehousing, corporate offices, engineering, technical services, and sales are housed in both buildings.

Auxiliary Output - A seperate line level output from a sound console that is to be used for foldback or monitoring that does not use up another main output. Each in channel has a path to the Auxiliary bus. It is also . Used . useful to send a signal to a separate effects processor.
. Used . ...

Ellipsoidal - Ellipsoidal is the name for a type of theatrical light, getting the name from the ellipsoidal reflector used to intensify the light of a back-loading lamp through the barrel and lens. Ellipsoidals are. Used . used for their strong, well-defined light and their versatility.

Characteristics of an ellipsoidal lighting unit include:

* An adjustable barrel, allowing a lightin. Used . g designer to change the size and focus of the light thrown by the unit by changing the distance between the mirror and the lens or lenses
* A set of brackets on the end of the barrel for the insertion o...

Arc Lamp - An arc lamp is a device that produces light by the sparking (or arcing, from voltaic arc or electric arc) of a high current between two carbon rod electrodes. The rods are touched and then slowly draw. Used . n apart; as the rods separate the current is "struck" and arcs across the gap in a bright, ionized path. The arc produces a temperature of several thousand degrees, and the tips of the carbon. Used . rods are heated to incandescence, creating light. The rods are slowly vaporized during the process and need to be regularly adjusted to maintain the arc. The concept was first demonstrated by Sir Humphry Davy...

Working Lights - Stage or auditorium lights, independent of the main theatrical system, used during rehearsals and while the crew sets up or breaks down the stage. Also, low wattage lights used to illuminate offstage. Used . obstacles and props tables unseen by the audience.. Used . ...

Circular - A circular truss is a truss that is shaped like a circle and generally used in large open venues where the stage can be viewed from many angles.. Used . . Used . ...

Line Array Speakers

Line array speakers make up a loudspeaker system to create a sound source that produces an evenly distributed sound output. The driver of each line array element is close enough to the driver of the next element to create constructive interference. The resulting sound waves go farther than sound waves from traditional loudspeakers. Line array systems date back to the early days of research in acoustics. Many old town halls and public venues still have old line source boxes which were found to project voice well though they are much smaller than horn-loaded speakers. These days, line array speakers use different drivers for high-, mid- and low-frequency passbands that must be in line. Each enclosure must be set up closely to form columns composed of these drivers. To increase the frequency range and maximum sound pressure, the number of drivers per enclosure must be increased. The orientation of line array speakers may vary. Vertical arrays are excellent for focusing sound at audiences without wasting output energy on ceilings or empty air above the audience because of its very narrow vertical output with a normally-wide horizontal pattern. On the other hand, horizontal line arrays have a very narrow horizontal output with a tall vertical pattern. For hanging concert speakers which are usually part of a concert reinforcement system, enclosures are set up together using a specialized rigging hardware and they hang from a single point. These line array speakers are curved backward at the lower portion so that the sound will reach more audience.