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RE: PLLXO question related to LDRse

The problem with having a passive pre (regardless if it is an LDR or not) is that the output impedance varies if you change the volume. This means the the fc of the filters and the xo point of the PLLXO will also vary everytime you change the setting on the passive. You could put an opamp buffer between the passive and the PLLXO but then you might as well go to an active crossover.



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Edits: 02/26/12

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