In a practical multidrive unit loudspeaker, true complementary crossover filter functions are not possible, and high-order alignments can result in subjective impairments. This paper considers the relationship between crossover pre-ring and drive unit polar response. It proposes a new Gaussian alignment that is designed to minimize the dispersive residue in the presence of suboptimum acoustic conditions.
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https://aes2.org/publications/elibrary-page/?id=6483
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