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RE: Elliptical crossovers?

Posted by erik_sq (A) on September 28, 2016 at 19:55:25

In Reply to: RE: Elliptical crossovers? posted by Steve O on September 23, 2016 at 07:19:49:

The "infinite" slope crossovers used by Joseph Audio are different, though I've never taken one apart I've looked at the designs online.

While the slopes are quite high, they aren't high because of very large capacitor or inductors. They are high because of some very clever use of inductive coupling. I don't remember the precise details, but the patent is online.

As I recall, it's close to using a bucking transformer as part of the crossover. By using the inverted phase output of the transformer and adding it to the output of the crossover you get much higher slopes without the ringing.

Having said that, only Joseph uses them and they haven't dominated the speaker field so I doubt it's the ultimate answer to crossovers either. Still, very clever. :)

Best,


Erik

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