Newbie crossover impedance question
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 Multi-Way Conventional loudspeakers with crossovers

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 22nd November 2002, 01:24 AM #1 Xylenz diyAudio Member   Join Date: Oct 2002 Location: bellevue, wa Newbie crossover impedance question There's one thing that I have never understood about crossovers (ok there's lots of things but this is a big one). Forgive my naivete but I have to ask it. If I have an N ohm woofer crossed over to an M ohm tweeter what is the impedance of the entire speaker as a system? I'm assuming that it must depend on the type of crossover but I dont know. How do you predictively calculate this?
 22nd November 2002, 02:16 AM #2 f4ier   diyAudio Member     Join Date: Sep 2001 Location: Sydney Try Speaker Workshop, Crossover Simulator and JeffB's PCDC which you can download from the FRD Group's site. Work with measured impedance curves rather than calculated curves. __________________ Crossover/Subwoofer Simulator
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Re: Newbie crossover impedance question

Quote:
 Originally posted by Xylenz If I have an N ohm woofer crossed over to an M ohm tweeter what is the impedance of the entire speaker as a system?
The nominal impedance of a speaker is just that, nominal. In a situation like this the nominal impedance would probably be N ohms.

The actual impedance -- assumming a well behaved XO -- is a spiral in a 3-space with axes frequency, magnitude, & phase.

dave
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