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Old 11th January 2002, 11:33 PM   #1
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Question help understanding a crossover...?


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In the crossover noted above, what is the function of the 4.7ohm resistor and the 2.4uf cap? I am building a similar x-over for similar drivers, and I just don't understand what those two components do. I originally thought that the cap was part of a 3rd order dividing network, and the resistor was part of the attenuation network, but neither fit into the formulas for either of those purposes... I am very confused...please help!
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Old 12th January 2002, 12:24 AM   #2
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Someone may be more familiar with crossovers and wish to help more. Those two parts add a little more shaping to the response curve, along with the 15ohm across the tweeter. The three part assemblly works to lower the output of the tweeter a little more subtly in its operating range .
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Old 12th January 2002, 12:40 AM   #3
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Ok I'm not 100% sure but this is what i think.....

the woofer has a 2nd order lowpass network....

the tweeter has a 2nd order high pass made of the 3.3uF capacitor and 0.65mH inductor..... the 4.7ohm resistor in parallel then form a contour network to counteract the rising response as frequency falls then the 15ohm resistor in parallel with the tweeter just helps do a final bit of response shaping to provide a smoother overall response.
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Old 12th January 2002, 06:10 AM   #4
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well thank you for your input, i am just going to buy a lot of resistor and small cap values and expirament a little... i am using the hi-vi F6 and RT2C-E, basically the larger versions of the two drivers in that crossover so i want to follow it a little.
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