Technology Showcase: Line-array Loudspeakers
May 1, 2008 12:00 PM, By Bennett Liles
The latest range of enclosures pack more audio punch.
The Axia from MacPherson is a three-way biamp system optimized for permanent installations. The drivers are aligned to couple with adjacent cabinets, each of which has a 1000W direct-radiating 15in. LF driver, two 8in. twin-coil direct-radiating cone MF drivers, and a 2in. compression driver mounted on a 90-degree by 55-degree slot-CD horn. These produce a total frequency response between -3dB points of 50Hz to 17kHz with a recommended amplifier power of 400W to 600W RMS into 8Ω for the MF/HF section. MacPherson also provides a three-year warranty on the unit.
The new OmniLine from Martin Audio is designed to meet a wide variety of installation scenarios by attaching four to 32 modules for maximum scalability. Each array is specifically tuned by optimization software to meet the specific acoustic profile needed. Each two-way micro-line-array module has an internal impedance of 16V, and they can be wired for assembly into a 4Ω or 8Ω array. The module has a frequency response of 85Hz to 20kHz ± 3dB for a recommended power amp of 100W to 200W. The dispersion of each module is 100-degrees horizontal by5-degrees vertical.
McCauley Sound markets the MLA3 large-scale three-way array for touring applications. The array provides a frequency response of 60Hz to 17kHz at -3dB points, a 90-degree horizontal coverage pattern, and a maximum continuous SPL level of around 130dB. Each enclosure houses twin volumetrically loaded 12in. neodymium cone drivers, twin 8in. HX32 midrange cone drivers, and two HF compression drivers. The low-frequency section has a power-handling capacity of 600W, the midrange 800W, and the HF section 200W.
The latest member of the M Series loudspeakers from Meyer Sound — the M'elodie UltraCompact high-power curvilinear-array loudspeaker — reflects Meyer's effort in the power-to-size parameter, particularly vital in touring situations. A self-powered three-way system with a 131dB SPL and exhibiting a 100-degree horizontal dispersion, the M'elodie uses QuickFly rigging with captive GuideALinks to simplify flown or ground-stacked arrays. The low/mid section uses 8in. cone drivers with 1.5in. voice coils, while the high frequencies are provided by the same 3in. compression diaphragm used in the larger Mica model.
The Geo S12 Series from Nexo consists of the S1230 and S1210 as the newest additions to the company's Geo S-Series of tangent-array loudspeakers. The two-way Geo S1230 can be flown horizontally or vertically, or it can be stacked with sub-woofers. The 130dB SPL is provided by a single 12in. driver coupled to a proprietary Directivity Phase Device, and the MF/HF horizontal dispersion pattern is configurable at 80 degrees or 120 degrees. At 16V, the unit is recommended for amplifiers delivering from 500W to 1000W.
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