Line Array Technology Showcase
Oct 3, 2011 10:42 AM, By Mark Johnson
The line starts here: While line array theory has been known since the late 1950s, and has been seen in various incarnations in pro audio over time, we can probably credit Dr. Christian Heil of L-Acoustics for bringing the line array back into vogue this time around. And while it's always been an idea whose time has come, it looks like it's here to stay. Since the 1990s line arrays have been all the rage (again), but now they are continuing to remain popular and viable tools for sound reinforcement applications. While not necessarily the be-all end-all, given the options available, there is probably some implementation of a line-array system can service a large percent of the applications in the field.
Line arrays come in many flavors from ultra compact to large-scale touring systems; systems intended for installation; to updated versions of the time-proven columns; to even more updated digitally steerable versions. Though the trend seems to be heading to smaller "micro" line arrays and columns. Currently available systems are constructed of any imaginable product, including composite, stainless steel, plastic, and the old standby, wood.
There are undeniably a substantial number of manufacturers who produce some type of line-array system. In the past, to keep things manageable, we've limited these to a certain implementation of the technology. However, for this one, we'll look around the market place and include products from manufacturer lineups that are interesting representations of the technology. Note that many of the manufacturers listed also produce a variety of systems, so be sure to visit the websites listed for additional product information.
Presented in an ultra-compact form factor, Adamson's Metrix two-way line source comprises an 8.5in. Kevlar neodymium mid-low driver and a 1.4in. high-frequency compression driver mounted to a patented high-frequency wave-shaping chamber. Designed for application in arrays of at least six elements, the coverage pattern is 5 degrees vertical by 120 degrees horizontal. The Metrix-i incorporates Enclosed Installation Rigging (EIR), which provides a cost effective version for installs. The weight for the "i" version is 43.5lbs. and frequency response is 95Hz to 18kHz with a peak SPL of 132.5dB.
The diminutive Alcons Audio LR7 weighs in at a mere 17.6lbs. and features 120-degree horizontal coverage from the RBN401 4in. pro-ribbon high-frequency driver with a "Morpher" lens. The two-way system uses a 6.5in. low-frequency driver, and the overall frequency response is 74Hz to 20,000Hz. In addition a 90-degree horizontal coverage version is available. Vertical coverage for a single element is 15 degrees. The system may be flown or stacked.
The Panaray MA12EX from Bose is a column design and an update from the MA12. The EX version provides low frequency response down to 75Hz (-3 dB) with an articulated array of 12 2.25in. high-excursion, weather-resistant drivers. High frequency response is 13kHz (-3dB). The 38.8in. tall powder-coated aluminum enclosure is finished in either black or white and is rated for outdoor application. The calculated maximum SPL is 109dB and coverage 160 degrees horizontal by 20 degrees vertical.
The Community Professional Loudspeakers Entasys column line-array system is a three-way design comprising six neodymium low-frequency drivers, 18 2.35in. mid-frequency drivers, and 42 1in. high-frequency drivers mounted in six 7"x1" Compact Ribbon Emulator (CRE) high-frequency elements. The coverage is 120 degrees horizontal and user-configurable for a 6- or 12-degree vertical coverage angle. Maximum SPL is 122db (120dB in curved configuration). Frequency response is 200Hz to 20kHz and an optional low-frequency extension column is available.
The Ti10L is the installation version of the T10 loudspeaker from d&b audiotechnik. The hard-foam polyurethane cabinet is loaded with two 6.5in. drivers in a dipolar arrangement and a 1.4in. exit compression high-frequency driver. The HF driver is fitted to a rotatable waveguide. The frequency response is 68Hz to 18kHz with a maximum SPL of 132dB. Horizontal coverage is 105 degrees. The cabinet weight is 24lbs.
The dB Technologies DVA T4 is a three-way self-powered system driven with Class T digital amplifier technology. A switchmode power supply is featured that will accept mains voltages from 90V to 240V. The polypropylene enclosure houses an 8in. low-frequency driver, a 6.5in. horn-loaded mid-frequency driver, and two 1in. compression drivers. System response is 80Hz to 19,000Hz with a maximum SPL of 128dB. Coverage is 100 degrees horizontal by 15 degrees vertical.
Duran Audio offers a choice of the Axys Intellivox range of digitally steerable self-powered column array or the Axys Target range of scaleable line source elements. Both systems feature on board DSP. The Intellivox Ivx-DS808 employs multichannel Class AB amplifiers that power six 6.5in. drivers and two 1in. compression drivers that provide a frequency response of 130Hz to 18kHz. Horizontal coverage is 110 degrees, and the vertical coverage is variable. Maximum peak SPL is 105dB. Column height is 50.31in.
EAW manufactures a column loudspeaker as well as the JFL210 compact two-way line-array module (among others). The JFL210 comprises two 10in. cone low-frequency drivers and one 1.4in. exit compression driver. The operating frequency range is 65Hz to 18.8kHz. The system provides two operating modes—either single-amp or biamp, and the peak calculated axial output limit is 130dB. Coverage is 110 degrees horizontal and 15 degrees vertical.
The Electro-Voice EVA Series consists of four different module configurations that provide two different horizontal coverage angles (90 degrees and 120 degrees) and two different vertical coverage angles (6 degrees and 20 degrees). Each module comprises two two-way elements, with each element made up of an 8in. low-frequency driver and two 1.25in. compression drivers mounted to a hydra/waveguide combination and integral rigging. System frequency response is 60Hz to 19kHz and maximum calculated SPL is 135dB peak.
Acceptable Use Policy blog comments powered by Disqus