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-   -   Kenwood Excelon KFC-XT14 (https://www.caraudioforumz.com/general-discussion-10/kenwood-excelon-kfc-xt14-22135/)

scroudt111 11-09-2006 01:21 AM

Kenwood Excelon KFC-XT14
 
I was wondering if anyone else has opened the crossover for these tweeters? I was looking at it, I followed where the current for the positive input goes, and at the end of it, the output, it switched polarity and goes to negitive. The neg input doesn't run through anything and goes straight to the positive output. Anyone know why they would do this?

Dukk 11-09-2006 02:32 PM

What topology is the crossover? A common trait with some kinds of crossovers, such as a 2nd order Butterworth, is that the speakers are out of phase at the crossover frequency so some designers will invert the polarity of one of the drivers to compensate for it.

scroudt111 11-09-2006 09:47 PM

I'm not sure what type of crossover it is?

Dukk 11-10-2006 03:25 AM

Neither do I - I was just offering a reason that it may be like that :ohwell:

robmar 11-10-2006 09:49 PM

its probably a 12 db per octive crossover
the reason the polarity is reversed is that crossover puts the tweeter 180 degrees out of phase so reversing the polarity puts it back in phase

mik 11-11-2006 07:39 PM


Originally Posted by robmar
its probably a 12 db per octive crossover
the reason the polarity is reversed is that crossover puts the tweeter 180 degrees out of phase so reversing the polarity puts it back in phase

That would be my guess too.


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