ISP Technologies

ISP Technologies offers a unique solution to the problem of flown, high quality sound reinforcement speakers in small to large Houses of Worship, School Auditoriums, Arenas or any room from 100 to 10,000 plus seats. Our analysis shows that for most cases of flown speakers, a 60-degree or more vertical pattern is needed to cover from the first row to the last. Conventional speakers typically offer a vertical coverage of only 40-degrees, and a horizontal coverage of 90 degrees. And this is only at some limited high frequency range. A big chunk of the midrange is usually handled by a 15 or 12-inch cone, which starts to beam at these frequencies, limiting the horizontal coverage to less than 90-degrees in this range. At the crossover between the large cone driver and the high frequency horn, the large spacing between their centers means that the vertical coverage has a big dip in the response around the crossover frequency at small angles off center. The result is uneven coverage, especially right in the middle of the voice range. Adding more boxes to try to achieve more coverage only makes the problem worse, since almost all conventional boxes do not "array" together properly, giving rise to comb filtering (severe peaks and dips spaced throughout the frequency response) and loss of clarity. Line array speakers can do a better job than conventional speakers at offering uniform coverage over wide vertical angles, but at a much higher price. This is due to many factors. First, each line array box is designed with very narrow vertical coverage, at least in the high frequencies (anywhere from 3 degrees to 12 degrees). This means you need a lot of boxes to get a lot of coverage. Second, their complex design and "newness" commands a high price per box. Third, each box has it's own, expensive flying hardware to link the boxes together. And fourth, they almost always require racks of amplifiers, an outboard processor, and experienced technician to set them up right. This has limited their use to larger rooms. Also, many of the line array boxes out there have problems in the horizontal coverage, still resulting in uneven, not very high fidelity sound in many seats. ISP has solved these problems by developing the ISP Reference Line Array Series and the LT Series Speakers. These systems can be custom designed for virtually any size venue and now for the first time, ISP Technologies puts Line Array technology within reach of any budget.