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The Design of Active Crossovers Douglas Self
Publisher: Focal Press

ACD is a measurement based, active crossover design program; Crossovers are described as sets of filter blocks. I have also wanted to design an active crossover, both as a kit and for my own projects. In some passive crossovers this is adjusted for by reversing the polarity of adjacent loudspeakers. Electronic active crossovers can have extra compensating circuitry. The crossovers are designed such that there is a stepping point from passive to fully active system. I am planning on a multiple amp setup in my crew cab, most likely fed by a RF 3sixty.3. Both of those things would incorporate a few (or lots of) buffer stages. At the crossover point More recent design trends are for power to be decreased to -6 dB (1/4) to each loudspeaker at the crossover point, and the slope rate can be selected. I will design an audiophile quality loudspeaker that will sound great with or without the DEQX, and can be used with one amplifier, bi-amplified, or tri-amplified, with passive or active crossovers. Crossover Points & Order At the crossover point, power to each loudspeaker is reduced -3 dB (1/2) so total sound energy is 1. A digital active crossover like the miniDSP makes design a lot easier, because you can play around with the delays and acoustic response easily and measurably. There are variations to the Model T design, from the baseline passive model to one with active external crossovers.