Found the crossover: more questions (BD-Design)

by Bert , Thursday, July 03, 2008, 21:18 (5776 days ago) @ xcortes

Hello Xavier,

Found your email...will answer as soon as possible.

What strikes me is that the recommended crossover has a 100K pot. I’m intending to use gainclone amps for the bass and they have 20K input impedance. I don’t know how 100k would work here. Am I'm missing something?

As for this question, the 100k is that high so that the total impedance by the filter does not become too low (100k and 20k in parallel is already 16,5k in total as seen by the filter). If there would be a 20k potentiometer then the impedance would be 10k and knowing that 16.5k is already influencing the filter behaviour negatively....

This is the reason why people have to tune their filter as I can't predict what they will connect after the filter...

Bert

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