Crossover design Note: By clicking the images you will get a bigger image (not all).
The crossover is a simple second-order butterworth. I am going to build a new one (and hopefully a better one) in the near future. But don't misunderstand me! I am very satisfied with the crossover I am using now and I have difficulties finding any problems with the speaker which I can blame on the crossover.

I have only used parts from Intertech. Capacitors are of polypropylene type and the inductors have air core. All parts are hardwired. The crossover is built for biwiring

The inductors are quite close to each other. I know this is a bad solution because the magnetic flux from one inductor will interact with the other inductor's magnetic flux and visa versa. To minimize this problem I have turned the smallest inductor so that the flux from the larger inductor do not add together with the smaller inductor.

The L-shaped part (resistors) of the high-pass filter lowers the tweeter's sensitivity with 3 dB. The speaker will then get a total sensitivity around 86-87 dB. The capacitor and resistor in series in the low-pass filter is an impedance equalization circuit (makes the impedance around the crossover frequency more smooth). The crossover frequency is 2600 Hz.
A new crossover

I have not designed this low-pass filter (I belive it is designed by an American). This low-pass filter is specially designed for the Vifa P17WJ-00-08 driver. As you can see the filter is not any ordinary crossover filter and it contains attenuation circuits.
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