The MAD A9 elements utilize dipole drivers, and PRG personnel were originally concerned with the amount of available gain. With 40-plus open microphones on stage and wide dynamic range from the program material, there was some question whether feedback would be an issue. However, MAD had recently developed a mechanical attenuation system comprised of anechoic foam and an attenuation blanket. These treatments proved effective, since chair squeaks and music stand rattles could be clearly heard during setup. Available gain was never an issue during the performance.

Comments about system performance included statements about evenness of frequency response throughout the coverage area, and the system?s ability to transmit detail to the farthest edges of the pattern. For example, at one stage of the performance, the impact from a xylophone soloist?s hammer strikes could be clearly heard at the top of the Capitol steps, more than 500? from the arrays.

The system?s performance was also noted by the orchestra?s personnel. The orchestra manager commented that the violins were exceptionally smooth and transparent, and that the individual instruments were well balanced. PRG personnel were also pleased with the results. Notes PRG?s Gary Hardesty, ?There?s always an element of risk when using a technology for the first time, especially in a high-profile performance like this one. Our clients use PRG because we can deliver exceptional performance in critical situations, and that faith was justified here as well. The system, once the operator became comfortable with its capabilities, did everything that was asked of it.?

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