The Design of Active Crossovers Douglas Self
Publisher: Focal Press

As I understand it, having an "active crossover" implies that the crossover is happening *before* the amping step. This is only semantics, but I am still curious. I have designed an active crossover using two 2nd order linkwitz riley filters Q= 0.5 cutoff freq. Now I need a second pair of gainclones to make sure all frequency matched! It seems that a patent that Jerry filed when he was operating Ultimate Ears finally went through, and so he is no longer able to use the active crossover design. Now the signals after the crossover go into. Its internal active crossover and custom-designed dual amplifiers ensure an extremely consistent performance under a variety of different studio conditions and program material. After having debated back and forth on running my new tweeters off my headunit to gain a biampable option vs. He has a clever solution, though. Ported: No ported (B&W has ported box which I dispensed in my design) Crossover: 3-way active crossover. Also I don't know why the new pair runs hotter even though they are exact same design. Tweeter will be placed at the top of the box (more precisely half inside and half outside as shown in the figure). 28/12/07 - Completed active crossover setup. Isn't this technically no longer an active crossover design?