Quote Originally Posted by Panomaniac View Post
That's cool.

Vuki did you know that your HP filter (before the contour) has the topology of a 3rd order, but the electrical function of a 1st? You might double check me, but it looks like the filter functions is very near 1st order at 4KHz. A single 5uF cap would do the same. The inductor and resistor do pull it down a little faster. Did you do that by ear?
No, I didn't do it by ear. I did it through measuring and ear. You probably analyzed it with some simulation software which didn't tell the whole story. In reality there is significant difference between simple 1st order and this crossover. With 1st order there is no way to get crossover at 1600hz and no midrange hump (at aprox. 2-2,5khz). Anyway, as I said it measures and sounds pretty good.