Phase shift in crossover for three way

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d0dja

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I think I'm confusing myself, but let's go.

I have a three way speaker, bi-amped with LF going directly to woofer. The active crossover is "zero phase" so whatever goes to the woofer is in phase with what's going to mid/tweeter's passive crossover.

Current at link to tweeter is shifted 90 degrees lead through cap; current at link to mid is shifted 90 degrees through inductor, so they're out of phase 180.

To (partially) correct this I wire mid with reverse polarity to bring it 90 degrees forward to not have a dip in response as woofer and mid hand over... or not...or...oh, I don't know. My brain is aching.

Anyone able to elucidate?


 

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