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4.5 DSAPilot
DSAPilot, used to set the module signal processing parameters, is based
on software originally developed by EAW engineers for the KF750,
KF760, and, in particular, the KF900 Series products. These products
required precise but variable pattern control and a high degree of fidelity
for speech and music in projects that range from small houses of worship
to the newest super-stadiums. Sophisticated mathematical algorithms
were developed to calculate the signal processing to achieve these
results for both multiple transducers and multiple module clusters.
Thoroughly tested and refined in successful, real-world applications,
these techniques have been applied to the DSAi Series to achieve the
same high degree of pattern control, musicality, and ease of setup.
Though highly complex, DSAPilot’s mathematics work behind the
scenes. DSAPilot is highly user-friendly, making the signal processing
adjustments deceptively simple. In fact, no acoustical knowledge is
required to set up and adjust DSAi Series modules. The only information
needed for DSAPilot to perform its magic is the module mounting
location, and desired coverage area.
4.6 Low Frequency Performance
While the DSA250i is designed as a full-range module, addition of the
companion DSA230i increases directionality and output at lower
frequencies. Directional control is increased in classical line array
fashion by extending the length of the overall array by mounting the
DSA230i in line with a DSA250i to form a longer line of low frequency
transducers. In addition, the increased number of low frequency
transducers couple to increase the low frequency output capability.
4.7 Comparison to Traditional Products
A major benefit of the DSAi Series is achieving desired down angle
coverage from a line source that is mounted flat to a vertical surface. The
inclusion of power amplifiers and dedicated signal processing to each
transducer provide the DSAi Series with performance and capabilities
well beyond those of typical multi-way loudspeakers and traditional,
voice-range line arrays. The DSAi Series can provide much better
directional control, higher output, and wider frequency response.
Significantly smaller sizes and weights, plus straightforward mounting
and wiring options pay additional benefits in reduced installation costs
and operation. The flexibility of DSAPilot to automatically optimize the
acoustical performance for multiple DSAi Series modules in a single
larger space further enhances their advantage over traditional solutions.
4.8 Designing DSAi Systems
DSAi modules can be used individually, in multiples, or in various cluster
configurations to satisfy a wide range of design requirements. By using
different configurations, DSAi performance can be varied according to
the type of audio program, the frequency range for the vertical control
desired, the maximum output levels, the audience location relative to the
module, and for meeting the requirements for special applications.
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