xover question

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mor2bz

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Joined 2005
I propose to wire two 4 ohm fullrange drivers in series. My plan is to
use a coil after the first driver in order to prevent comb filtering and provide a more even frequency response. I believe that I read somewhere that
it doesn't matter if the filter is place before or after the driver in a first order crossover. Does this mean that I will be attenuating the highs in the first driver ahead of the filter as well?

thanks
 
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Sonce

Member
Joined 2014
Pano said:
Just beware that by doing that you can make a difficult load for the amp. You are, in effect, making a short circuit in the high end. A small value resistor in series with the capacitor can help.
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No, capacitor must be parallel only to one of the drivers and not to both of them. High frequencies on that driver will be attenuated at a rate of 6 dB per octave (first order low-pass filter). There is no short circuit at high frequencies, total impedance will be the same as in the other driver alone.
Sonce said:
With two drivers in series, if you put capacitor in parallel with ONE fullrange driver, that driver will have attenuated highs (first order low-pass filter), in order to prevent comb filtering.
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