In Reply to: Re: Transient Perfect Crossover's posted by Adrian Mack on October 16, 2003 at 04:12:54:
In the case of a passive crossover, the order is important because the source impedance of one component, device or circuit is the load impedance of the one preceding it. For example, in the tweeter circuit of the π crossover, resistance values R1 and R2 are set precisely so that the Q of the high-pass filter preceding them is slightly underdamped. This generates a shelved response curve, so that the first couple of octaves are flat before HF augmentation begins.
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