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The Design of Active Crossovers Douglas Self
Publisher: Focal Press

I am thinking about using a 2 way active crossover in my current 3 way speaker design. Also, B&W Nautilus speakers use an active crossover design that allows each driver to operate on its own frequency unlike the more-than-common passive crossover designs. Another review discusses Douglas Self's latest book The Design of Active Crossovers. The mid and tweeter would use a passive XO. The circuit was designed for the purpose of creating an active crossover circuit for 2-way output while having a response that is linear in phase. MaxxEQ and MaxxBass can be used for designing efficient and programmable active crossovers for both amplifiers and powered speakers. My plan was to trace the transfer function shown on the website, convert to biquad and insert in DSP. Internal active crossover and newly designed dual amplifiers ensure a broad, extremely accurate frequency response, clear imaging with a wide sweet spot, high power handling and detailed highs and mids. I am trying to convert this design from passive to active crossover (miniDSP). The active crossover would be between the woofer and Midrange/Tweeter. Furthermore, my (small) experience with relatively high order active crossovers so far is that it makes for such a small area of overlap at the crossover point that other design constraints can be relaxed a little if need be. With a passive crossover, it is usually positioned inside the speaker and the speaker designer presets the crossover frequencies to achieve the sound he wants for the speaker design. As a B-segment global crossover, Peugeot Urban Crossover variant is mainly targeted to the customers who have high mobility to fill their active lifestyle.