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Comments on my XO design so far

2K views 4 replies 2 participants last post by  Pancakes 
Version A is standard. Version B has the merit of a 4th order characteristic for the tweeter, but since the impedance seen by the high pass section of the midrange section includes both the mid and the tweeter getting the calculations right is a much more involved proposition.
 
Was planning to guess impedance then test to nail it down, I hadn't thought of the tweeter on the second diagram being 4th order but of course it is. So on A the phasing will be +90 deg on the tweeter, zero on the mid and -90 on the Woofer and B would be +180 (reverse polarity) on the tweeter, zero on the mid and -90 on the Woofer?
Don't worry about the phase, as there are other factors involved that will affect it. When you wire the cab up test the mid with the woofer and try the polarity on the mid both ways, wiring it whichever way gives the better result. Then wire the tweeter and do the same.
 
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