The use of tactics such as introducing time delay, modifying crossover filter parameters, adjusting crossover frequencies, and inverting the polarity of some drivers in order to improve the amplitude and phase response of crossover systems is reviewed in this paper. It is shown that improvements indicated solely by study of the steady state frequency domain results can be quite misleading. Time domain results show clearly that some tactics, such as inversion of the polarity of some drivers, will cause transient response catastrophies which should be avoided. The use of time delay obtained through physical offsetting of drivers is shown to have a strong effect on transient response as well as frequency and phase response of multiway loudspeaker sand time delay can improve the expected response from some selected crossover configurations.
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